PNNL-18284 

Prepared for the U.S. Department of Energy 

under Contract DE-AC05-76RL01830 

Production of Gasoline and Diesel 

from Biomass via Fast Pyrolysis, 

Hydrotreating and Hydrocracking: 

A Design Case 

SB Jones JE Holladay 

C Valkenburg DJ Stevens 

CW Walton C Kinchin 

DC Elliott S Czernik 

February 2009 

PNNL-18284

Production of Gasoline and Diesel 

from Biomass via Fast Pyrolysis, 

Hydrotreating and Hydrocracking: 

A Design Case 

SB Jones

1

 JE Holladay1

C Valkenburg1 DJ Stevens1

CW Walton C Kinchin2

DC Elliott1 S Czernik2

February 2009 

Prepared for 

the U.S. Department of Energy

under Contract DE-AC05-76RL01830 

Pacific Northwest National Laboratory 

Richland, Washington 99352 

 

1

 Pacific Northwest National Laboratory 

2

 National Renewable Energy Laboratory 

iii 

Executive Summary 

The President has established a goal to supply 35 billion gallons per year of renewable and alternative 

fuels by 2017. This goal is addressed in part by the U.S. Department of Energy (DOE) Office of Biomass 

Program‟s (OBP‟s) Thermochemical Platform multiyear program plan to “convert biomass to fuels, 

chemicals and power via thermal and chemical processes such as gasification, pyrolysis and other nonbiochemical processes” (DOE 2008).

In recent years, the Biomass Program completed technoeconomic evaluations of both biological and 

thermochemical pathways for converting biomass to ethanol. These “design case” studies provided a 

detailed basis for understanding the current state of various conversion technologies for producing fuel 

ethanol. The studies also helped identify technical barriers for which research and development could 

potentially lead to significant cost improvements. Consistent assumptions for items such as plant 

lifetimes, rates of return, and other factors were used in all cases so the various processes could be 

compared. 

At present, the use of biomass resources to produce infrastructure-compatible fuels is appealing. 

Hydrocarbon biofuels can potentially be used without significant changes to the current fuel distribution 

and utilization infrastructure, including pipelines, pumping stations, and vehicles. Given the relatively 

short time between now and 2017, the goal of 35 billion gallons per year of renewable fuels will be more 

readily met if hydrocarbon biofuels are part of the fuel mix. 

The purpose of this design case study is to evaluate a processing pathway for converting biomass into 

infrastructure-compatible hydrocarbon biofuels. This design case investigates production of fast pyrolysis 

oil from biomass and the upgrading of that bio-oil as a means for generating infrastructure-ready 

renewable gasoline and diesel fuels. Other options for pyrolytic processes and upgrading steps exist, but 

they were not evaluated in this study. Likewise, gasification pathways that could be used to produce 

hydrocarbons are not addressed here. This study has been conducted using the same methodology and 

underlying basis assumptions as the previous design cases for ethanol. 

The overall concept and specific processing steps were selected because significant data on this 

approach exists in the public literature. The analysis evaluates technology that has been demonstrated at 

the laboratory scale or is in early stages of commercialization. The fast pyrolysis of biomass is already at 

an early stage of commercialization, while upgrading bio-oil to transportation fuels has only been 

demonstrated in the laboratory and at small engineering development scale. Advanced methods of 

pyrolysis, which are under development, are not evaluated in this study. These, may be the subject of 

subsequent analysis by OBP. 

The plant is designed to use 2000 dry metric tons/day of hybrid poplar wood chips to produce 

76 million gallons/year of gasoline and diesel. The processing steps include: 

1. Feed drying and size reduction 

2. Fast pyrolysis to a highly oxygenated liquid product 

3. Hydrotreating of the fast pyrolysis oil to a stable hydrocarbon oil with less than 2% oxygen 

4. Hydrocracking of the heavy portion of the stable hydrocarbon oil 
iv

5. Distillation of the hydrotreated and hydrocracked oil into gasoline and diesel fuel blendstocks 

6. Hydrogen production to support the hydrotreater reactors. 

Note that the Idaho National Laboratory (INL) is working on feedstock logistics that will eliminate the 

need for drying and size reduction at the plant. That is, the “as received” feedstock to the pyrolysis plant 

will be “reactor ready”. This development will likely further decrease the cost of producing the fuel. 

The capital cost for a standalone “nth” plant is $303 million (2007 basis). At a 10% return on 

investment (ROI), the minimum fuels (gasoline + diesel) selling price is $2.04/gal ($1.34/gal ethanol 

equivalent basis). 

An important sensitivity is the possibility of co-locating the plant with an existing refinery. In this 

case, the plant consists only of the first three steps: feed prep, fast pyrolysis, and upgrading. Stabilized, 

upgraded pyrolysis oil is transferred to the refinery for separation and finishing into motor fuels. The offgas from the hydrotreaters is also transferred to the refinery, and in return the refinery provides lower-cost 

hydrogen for the hydrotreaters. This reduces the capital investment to $188 million and the minimum 

fuel selling price to $1.74/gal ($1.14/gal ethanol equivalent basis). 

Production costs near $2/gal (in 2007 dollars) and petroleum industry infrastructure-ready products 

make the production and upgrading of pyrolysis oil to hydrocarbon fuels an economically attractive 

source of renewable fuels. The study also identifies technical areas where additional research can 

potentially lead to further cost improvements. 
v 

Acronyms and Abbreviations 

AR As received 

Btu British thermal units 

CFB circulating fluid beds 

DOE U.S. Department of Energy 

gal gallon 

HDS hydrodesulfurized 

HTS high temperature shift 

LHV lower heating value 

MFSP minimum fuel product selling price 

MM Million 

mm millimeter(s) 

mtpd metric tons per day 

MWth megawatts thermal 

OBP Office of the Biomass Program 

PSA pressure swing adsorption 

ROI return on investment 

tpd tons per day 

TPEC total purchased equipment cost 

vii 

Contents 

Executive Summary .......................................................................................................................... iii

Acronyms and Abbreviations ............................................................................................................. v

1.0 Introduction ............................................................................................................................. 1.1

2.0 Analysis Approach .................................................................................................................. 2.1

3.0 Feedstock and Plant Size ......................................................................................................... 3.1

4.0 Process Overview .................................................................................................................... 4.1

4.1 Fast Pyrolysis Oil Upgrading .......................................................................................... 4.3

5.0 Process Design ......................................................................................................................... 5.4

5.1 Feed Handling and Fast Pyrolysis ................................................................................... 5.4

5.2 Hydrotreating to Stable Oil ............................................................................................. 5.6

5.3 Hydrocracking and Product Separation ........................................................................... 5.7

5.4 Hydrogen Production ...................................................................................................... 5.8

5.5 Cooling Water and Utilities ............................................................................................. 5.9

5.6 Process Yields and Consumptions ................................................................................ 5.10

6.0 Process Economics .................................................................................................................. 6.1

6.1 Capital Costs ................................................................................................................... 6.1

6.1.1 Pyrolysis Unit ....................................................................................................... 6.1

6.1.2 Pyrolysis Oil Hydrotreating and Hydrocracking .................................................. 6.1

6.1.3 Hydrogen Generation ........................................................................................... 6.2

6.1.4 Balance of Plant ................................................................................................... 6.2

6.2 Operating Costs ............................................................................................................... 6.3

6.3 Minimum Fuel Selling Price ........................................................................................... 6.3

7.0 Economic and Technical Sensitivities ..................................................................................... 7.1

7.1 Co-location with a Refinery ............................................................................................ 7.1

7.2 Financial and Market Sensitivities .................................................................................. 7.2

7.3 Research Sensitivities ...................................................................................................... 7.3

8.0 Conclusions and Recommendations ........................................................................................ 8.1

9.0 References ............................................................................................................................... 9.1

Appendix A Design Case – Stand-Alone Heat and Material Balance ............................................ A.4

Appendix B Equipment Cost Details .............................................................................................. B.1
viii 

Figures 

Figure 4.1. Block Diagram of Overall Design ................................................................................ 4.1

Figure 4.2. Typical Product Yields from Different Modes of Wood Pyrolysis .............................. 4.2

Figure 5.1. Block Diagram of Fast Pyrolysis .................................................................................. 5.4

Figure 5.2. Block Diagram of Bio-Oil Upgrading .......................................................................... 5.6

Figure 5.3. Block Diagram of Hydrocracking and Product Separation .......................................... 5.8

Figure 5.4. Block Diagram of Hydrogen Production ...................................................................... 5.9

Figure 7.1. Block Diagram of Pyrolysis and Upgrading Plant Co-located with a Refinery ........... 7.1

Figure 7.2. Financial/Market Sensitivities ...................................................................................... 7.3

Figure 7.3. Research Sensitivities ................................................................................................... 7.4

Tables 

Table 5.1. Feedstock and Processing Assumptions ........................................................................ 5.5

Table 5.2. Product Characterization ................................................................................................ 5.5

Table 5.3. Hydrotreating Conditions ............................................................................................... 5.7

Table 5.4. Hydrotreating Product Yields ........................................................................................ 5.7

Table 5.5. Hydrocracking Conditions ............................................................................................. 5.8

Table 5.6. Process Water Demands ................................................................................................ 5.9

Table 5.7. Overall Yields and Consumption ................................................................................. 5.10

Table 5.8. Carbon Balance ............................................................................................................ 5.10

Table 6.1. Pyrolysis Unit Literature Capital Cost .......................................................................... 6.1

Table 6.2. Total Project Investment Cost for the Design Case Stand-Alone Plant ......................... 6.2

Table 6.3. Total Project Investment Factors ................................................................................... 6.2

Table 6.4. Operating Cost Assumptions ......................................................................................... 6.3

Table 6.5. Economic Parameters ..................................................................................................... 6.4

Table 6.6. Project Economics for the Stand-Alone Design Case Plant........................................... 6.5

Table 7.1. Comparison of Integrated and Standalone Facilities ..................................................... 7.2
1.1 

1.0 Introduction 

The President has established a goal to supply 35 billion gallons per year of renewable and alternative 

fuels by 2017 (White House 2007). This goal is addressed in part by the U.S. Department of Energy 

(DOE) Office of the Biomass Program‟s (OBP‟s) Thermochemical Platform multiyear program plan to

“convert biomass to fuels, chemicals and power via thermal and chemical processes such as gasification, 

pyrolysis, and other non-biochemical processes” (DOE 2008). 

In recent years, the Biomass Program completed technoeconomic evaluations of both biological and 

thermochemical pathways for converting biomass to ethanol. These “design case” studies provided a 

detailed basis for understanding the current state of various conversion technologies for producing fuel 

ethanol. The studies also helped identify technical barriers where research and development could 

potentially lead to significant cost improvements. Consistent assumptions for items such as plant 

lifetimes, rates of return, and other factors were used in all cases so the various processes could be 

compared. 

At present, the use of biomass resources to produce infrastructure-compatible fuels is appealing. 

Hydrocarbon biofuels can potentially be used without significant changes to the current fuel distribution 

and utilization infrastructure, including pipelines, pumping stations, and vehicles. Given the relatively 

short time before 2017, the goal of 35 billion gallons of renewable fuels will be more readily met if 

hydrocarbon biofuels are part of the fuel mix. 

The purpose of this design case study is to evaluate a processing pathway for converting biomass into 

infrastructure-compatible hydrocarbon biofuels. 

This design case investigates fast pyrolysis oil production from biomass and the upgrading of that 

bio-oil as a means for generating infrastructure-ready renewable gasoline and diesel fuels. The overall 

concept and specific processing steps were selected because significant data on this approach exist in the 

public literature. Other options for pyrolytic processes and upgrading steps exist, but they were not 

evaluated in this study. One example of alternative processing options is hydrothermal pyrolysis 

followed by other upgrading steps. Likewise, gasification pathways can be used to produce 

hydrocarbons, but those are also not addressed here. These and other options may be addressed in future 

studies. 

The design case presented here represents a goal case targeting performance potentially available 

between now and 2015. This analysis evaluates technology that has been demonstrated at the laboratory 

scale or is in early stages of commercialization. The fast pyrolysis of biomass is already at an early stage 

of commercialization, while the upgrading of the bio-oil to transportation fuels has only been 

demonstrated in the laboratory and at small engineering development scale. As such, the analysis does 

not reflect the current state of commercially-available technology but includes advancements that are 

potentially achievable by 2015. 

The study has been conducted using the same methodology and underlying basis assumptions as the 

previous design cases for ethanol. It allows a basis for comparison with other research and development 

projects targeting the DOE objectives and lastly, provides a benchmark for the status of the pyrolysis 

program. 

2.1 

2.0 Analysis Approach 

The approach used is similar to that employed in previous conceptual process designs and associated 

design reports (Aden et al. 2002, Spath et al. 2005, Phillips et al. 2007). Process flow diagrams are based 

on literature information and research results; these data were then used to build a process model in 

CHEMCAD©, a commercial process flow sheeting software tool. The capital costs were taken from 

literature sources or were obtained from Aspen ICARUSTM software after being sized using the 

CHEMCAD© heat and material balances. The capital and operating costs were assembled in a Microsoft 

Excel© spreadsheet. A discounted cash flow method was used to determine the minimum product selling 

price. 

3.1 

3.0 Feedstock and Plant Size 

The feedstock is hybrid poplar wood chips delivered at 50 wt% moisture. The feedstock cost is 

assumed to be $50.7/bone dry metric ton, delivered. This report takes a conservative approach and 

assumes the same moisture level as was used in previous studies (Aden et al. 2002, Spath et al. 2005, 

Phillips et al. 2007) and that feedstock grinding and drying occur at the plant. 

The plant capacity is 2000 metric tons/day (mtpd) of bone dry wood. The plant is assumed to be an 

established (“nth”) plant design, rather than a first of its kind. 

4.1 

4.0 Process Overview 

A simplified block diagram of the overall design is given in Figure 4.1. The processing steps include: 

1. Feed drying and size reduction 

2. Fast pyrolysis to a highly oxygenated liquid product 

3. Hydrotreating of the fast pyrolysis oil to a stable hydrocarbon oil with less than 2% oxygen 

4. Hydrocracking of the heavy portion of the stable hydrocarbon oil 

5. Distillation of the hydrotreated and hydrocracked oil into gasoline and diesel fuel blendstocks 

6. Steam reforming of the process off-gas and supplemental natural gas to produce hydrogen for the 

hydrotreating and hydrocracking steps. 

Figure 4.1. Block Diagram of Overall Design 

Feed Handling and Preparation: The biomass feedstock is dried from its as-received moisture 

level to less than 10% to minimize water in the fast pyrolysis product liquid. It is then ground to 2-6 mm 

particle size to yield sufficiently small particles, ensuring rapid reaction in the pyrolysis reactor. 

Fast Pyrolysis: Pyrolysis is the thermal decomposition of carbonaceous material in the absence of 

oxygen to produce char, gas, and a liquid product rich in oxygenated hydrocarbons. In general, pyrolysis 

is performed using a range of temperatures and residence times to optimize the desired product. 

Figure 4.2 illustrates the approximate yields from different modes of pyrolysis (Bridgewater 2007). 

Fast pyrolysis is assumed in this work. The biomass is heated to approximately 500°C in less than 1 

second, and then rapidly cooled to stop the reaction. The liquid product, known as bio-oil, is obtained in 

yields up to 75% by weight on a dry feed basis. It can also be upgraded to lower the oxygen content and 

transported using the same trillion-dollar infrastructure used by the oil industry. In addition to being 

transported and stored at a lower cost than solid biomass, bio-oil and upgraded oil can be used in 

applications ranging from value-added chemicals to transportation fuels. 
4.2 

0

10

20

30

40

50

60

70

80

90 % Yield (Dry Wood Basis)

Fast Intermediate Slow Gasification

Modes of Pyrolysis of Wood

Typical Product Yields

Liquid

Char

Gas

Figure 4.2. Typical Product Yields from Different Modes of Wood Pyrolysis 

There are many types of pyrolysis reactor configurations, each with different advantages and 

disadvantages. The following paragraphs summarize the various reactor types:

Ablative pyrolysis: Mechanical pressure is used to press carbonaceous material (usually wood) 

against a heated reactor wall. Material in contact with the wall essentially “melts” and, as it is moved 

away, the residual oil evaporates as pyrolysis vapors. There is no requirement for inert gas in this 

configuration, so processing equipment (on demonstration scales) can be smaller and potentially less 

expensive. The other advantage to this configuration is that feed materials do not require extensive 

grinding to achieve particle sizes sufficient for high heating rates. Conversely, this configuration is 

surface-area controlled so scaling is a linear function of the heat-transfer area and does not benefit 

from the same economies of scale as the other systems. The system is also slightly more complex due 

to the mechanical nature of the process. There is currently a 50 tpd demonstration plant using this 

technology in Germany. (Bridgewater 2007) 

Moving Bed or Auger Pyrolysis: This reactor utilizes a screw to mix hot sand and biomass. While it 

provides good control of residence times and does not dilute the products with fluidizing gas, the sand 

must be reheated separately, which leads to mechanical reliability issues. There are currently no 

large-scale commercial plants. (Bridgewater 2007) 

Entrained Flow Pyrolysis: This reactor configuration is popular for studies of thermochemical 

conversion kinetics and investigations of the effects of pressure. Feed material is typically fed into the 

top of the reactor, co-current with a gas stream. The flow through this configuration is assumed to 

approximate plug flow, with the residence time controlled by the length of the heated zone. Char 

buildup can be a troublesome trade-off for these simple and inexpensive reactors. Liquid yields are 

usually lower than fluid bed systems. (Bridgewater 2007) 

Rotating Cone: This reactor combines biomass and hot sand at the top of the vessel. The solids are 

mixed by a rotating cone inside the vessel. Hot pyrolysis oil vapors leave near the bottom of the 

reactor, while hot sand and char exit the reactor from the bottom of the cone. No carrier gas is 

needed, resulting in smaller downstream equipment. A 2 mtpd plant operating on palm oil empty fruit 

bunches was commissioned in Malaysia in 2006. (BTG 2009) 

Bubbling Fluidized Bed Pyrolysis: Here, biomass is introduced to hot sand fluidized by recirculated 

product gas. This technology is well understood, simple to construct and operate (on large scales), 

and very efficient in transferring heat to the biomass, resulting in high liquid yields. Small biomass 
4.3 

particle sizes are required for this method in order to obtain high heating rates. Dynamotive currently 

operates two plants, one 100 mtpd and one 200 mtpd, in Canada. (Bridgewater 2007, Dynamotive 

2007) 

Circulating Fluidized Bed Pyrolysis: Similar to bubbling fluidized beds, these configurations circulate 

hot sand between the pyrolysis reactor and a sand re-heater. Char or product gas and char are burned 

to provide heat to the sand re-heater. Circulating fluid beds (CFBs) are widely used at very high 

throughputs in the petroleum industry and are potentially suitable for large biomass throughputs as 

well. Ensyn operates a 100 tpd (200 tpd green wood) plant in Canada. (Bridgewater 2007, Ensyn 

2009) 

Both fluidized bed configurations allow for greater control of vapor residence time, an important 

consideration for optimization of the high liquid yield associated with fast pyrolysis. A circulating 

fluidized bed was chosen, as this design is the most likely to be scalable to the 2000 mtpd feed rate 

assumed in this report. 

4.1 Fast Pyrolysis Oil Upgrading 

Untreated bio-oil is a dark brown, free-flowing liquid with about 25% water that cannot be easily 

separated. It is a complex mixture of oxygenated compounds that is unstable in long-term storage 

(Oasmaa and Kuoppala 2003, Diebold 2000) and is not miscible with any conventional hydrocarbonbased fuel (Bridgewater 2007). Bio-oil can be stabilized and converted to a conventional hydrocarbon 

fuel by removing the oxygen through hydrotreating. Hydrotreating to remove nitrogen and sulfur from 

hydrocarbons is a common and well established refinery process. Oxygen removal on the scale needed to 

upgrade pyrolysis oil is relatively new and is in the research stages. 

The upgrading step involves contacting the bio-oil with hydrogen under pressure and at moderate 

temperatures (<400°C or 750°F) over fixed bed reactors. Single stage-hydrotreating has proved to be 

difficult, producing a heavy, tar-like product. Dual-stage processing, where mild hydrotreating is 

followed by more severe hydrotreating has been found to overcome the reactivity of the bio-oil (Elliot 

2007). Overall, the pyrolysis oil is almost completely deoxygenated by a combination of 

hydrodeoxygenation and decarboxylation: 

Catalyst / 3H2

Cn COOH Cn+1 + 2H2O Hydrodeoxygenation 

Catalyst / H2

Cn COOH Cn + CO2 Decarboxylation 

Less than 2% oxygen remains in the treated, stable oil. Water and off-gas are produced as 

byproducts. The water phase contains some dissolved organics, while the off-gas contains light 

hydrocarbons, excess hydrogen, and carbon dioxide. 

Once stabilized oil is produced it can be further processed into conventional fuels or sent to a 

refinery. Both options are considered in this report.
5.4 

5.0 Process Design 

The design case assumes a standalone unit that combines feed pretreatment, fast pyrolysis, 

hydrotreating and hydrocracking of pyrolysis oil and separation to gasoline and diesel fuel blendstocks, 

and hydrogen generation. 

5.1 Feed Handling and Fast Pyrolysis 

Figure 5.1 shows the block diagram for the feed pretreatment, fast pyrolysis, and bio-oil quenching 

area. Hybrid poplar is dried from its „as received (AR)‟ moisture level of 50 wt% to 7 wt% water using 

hot flue gases from the char combustor in a direct-contact dryer. It is then ground to approximately 2-6 

mm. 

Figure 5.1. Block Diagram of Fast Pyrolysis 

Table 5.1 summarizes the as received feedstock characteristics and feed requirements. 

The dried, finely ground biomass is fed to a circulating fluidized pyrolysis reactor operating at 520°C. 

Sand is used as the fluidizing medium and the residence time is less than a second. The biomass is 

converted into a mixture of gases, bio-oil, and char. A cyclone separates the sand and char from the gases 

and liquids. The hot bio-oil vapor is rapidly quenched with cooled bio-oil and then separated from the 

remaining vapors (Solantausta 2003, Freel and Graham 1995). High temperature heat recovery is not 

included due to the likelihood of severe fouling in the recuperators (Johnson et al. 2006). Most of the 

gases are recycled back to the pyrolysis reactor to assist fluidization. The char and a portion of the gas 

are burned to heat the circulating sand. The cooled pyrolysis oil contains about 20-25% associated water. 

Pre-treatment

(drying, grinding)

Cyclone Quench

Filter

Combustor

Solids

Bio-Oil

Sand/Char

Cool Bio-Oil

Heated 

Sand

NonCondensables

Biomass

Vapor

Liquid & 

Residual

Solids

Fluidizing Gas

Exhaust

Hot 

Combustor

Exhaust Gas to Combustor

CFB Pyrolysis

(nominal 500°C

or 930°F)
5.5 

Table 5.2 shows the product characterization. Note that the bio-oil yield is near the high end of 

the references. This choice is based on the assumption that improvements in bio-oil yield can be achieved 

by the 2015 time-frame.

Table 5.1. Feedstock and Processing Assumptions 

Assumed Value

Hybrid Poplar Wood Chips

AR Moisture, wt% 50%

wt% Carbon (dry) 50.60(a)

wt% Hydrogen (dry) 6.08(a)

wt% Oxygen (dry) 40.75(a)

wt% Nitrogen (dry) 0.61(a)

wt% Sulfur (dry) 0.02(a)

wt% Chlorine (dry) 0.01(a)

wt% Ash (dry) 1.93(a)

HHV, Btu/lb 8405(a)

Temperature, °F (°C) 968 (520)(b)

Pressure atmospheric(b)

Feed Moisture to pyrolysis unit, wt% 7

(b)

(a) Hybrid Poplar. Phyllis Database for Biomass and Waste

(b) Solantausta 2003

Table 5.2. Product Characterization

Model Results Reference Data(a) Reference Data(b)

Yields, lb/100 lb dry wood

Oil 65 59.9 66

Water 10 10.8 12

Char & Ash 13 16.2 8

Gas 12 13.1 11

Loss 3 

Oil Composition

Water in oil, wt% 21 15-30

Carbon, wt% dry 58 55-58

Hydrogen, wt% dry 6 5.5-7.0

Oxygen, wt% dry 36 35-40

(a) Ringer et al. 2006

(b) Mohan et al. 2006
5.6 

The detailed model flowsheet diagram and associated heat and material balance for the fast pyrolysis 

section can be found in Appendix A. 

5.2 Hydrotreating to Stable Oil 

The simplified flow diagram for the stand-alone upgrading portion of the plant is shown in Figure 5.2. 

Figure 5.2. Block Diagram of Bio-Oil Upgrading

The filtered bio-oil product from the pyrolysis unit is pumped to high pressure, then combined with 

compressed hydrogen and preheated with reactor effluent. Two catalytic reaction stages are used. The 

first stage catalytic reactor serves to stabilize the bio-oil by mild hydrotreatment over cobalt molybdenum 

(CoMo) hydrotreating catalyst (Elliott 2007). The product oil is further processed in the second-stage 

hydrotreater. The second stage hydrotreater operates at higher temperature and lower space velocity than 

the first stage. CoMo catalyst is also used in this reactor. Reactor effluent and a fired heater provide feed 

preheat for the second stage. The second-stage product is separated into product oil, wastewater, and offgas streams.

The off-gas from the hydrotreaters is sent to a Pressure Swing Adsorption (PSA) system for recovery 

of the hydrogen gas. The recovered hydrogen is recycled back to the reactors. The low pressure PSA tail

gas stream, which is rich in byproduct light hydrocarbons, is sent to the steam reformer for hydrogen 

production. A small portion of this off-gas is used in the fired heater that preheats feed for the secondstage hydrotreater.

Anaerobic digestion can be used to treat the less than 2% organics in the wastewater.

The processing conditions are listed in Table 5.3. The product oil is a mixture of hydrocarbons with a 

low level (~2%) of oxygen, as shown in Table 5.4. Data from Beckman et al. (1990) and Elliot (2007) 

were used to estimate the product slate. 

Preheater

Hydrotreater

(2 stages)

PSA

Steam 

Reforming

Bio Oil 

from 

Pyrolysis 

Unit

H2

To 

Wastewater 

Treatment

Natural 

Gas

Distillation Oil

Vapor

Light 

Stable Oil

Pressurization

Heavy Stable 

Oil to 

Hydrocracker

Off-Gas

H2
5.7 

Table 5.3. Hydrotreating Conditions

1

st Stage(a) 2nd Stage(a)

Temperature, °F (°C) 465 (240) 700 (370)

Pressure, psig 2500 2015

LHSV, v/h/v 1 0.14

(a) Beckman et al 1990

Table 5.4. Hydrotreating Product Yields

Model

Reference

Data(a)

Reference

Data(b)

Yields, lb /100 lb wet pyrolysis oil

Stable Oil (Stream 304) 44 38

Water (Stream 230) 48 50

Gas (Streams 270 and 302) 13 12 by difference

Chemical H2 Consumption, lb/100 lb dry oil 4.96 5.01 3.45

Stable Oil Composition (Stream 304)

Water, ppm 0 50 0

Aromatics, wt% 10.0 Not reported

Carbon, wt% dry 88.1 86.8 86.8

Hydrogen, wt% dry 10.5 13.2 10.8

Oxygen, wt% dry 1.5 0.02 2.5

Specific Gravity 0.87 0.83 0.93

Btu/lb, gross 17,600 19,765 17,302

Btu/lb, net 16,600 18,525 16,276

(a) Tables 15 & 16 in Elliot 2007

(b) Beckman et al. 1990, Chapter 5

5.3 Hydrocracking and Product Separation 

Figure 5.3 shows the simplified flow diagram for the hydrocracking and product separations areas. 

The hydrotreated oil is stabilized by removing the butane and lighter components in a lights removal 

column. The stable oil stream is then separated into light and heavy fractions. The heavy fraction (which 

boils above 350°C (662°F) is sent to the hydrocracker to completely convert the oil to gasoline and diesel 

blend components. 
5.8 

Figure 5.3. Block Diagram of Hydrocracking and Product Separation

The product is a mixture of liquids spanning the gasoline and diesel range and some byproduct gas. 

The gasoline and diesel range products are separated by distillation. These products are suitable for 

blending into finished fuel. The hydrocracking conditions and product yields are shown in Table 5.5. 

Table 5.5. Hydrocracking Conditions

Model Reference Data

Nominal Temperature, °F (°C) 800 (427) 775 (413)(a)

Pressure, psig 1280 1051 (mild) – 2400 (resid) (a)

Gasoline, lb/100 lb feed 95 Depends on feed/conditions(a,b)

Diesel, lb/100 lb feed 5 Depends on feed/conditions(a,b)

(a) Parkash 2003

(b) Gulf 2006

5.4 Hydrogen Production 

Figure 5.4 shows the simplified flow scheme for hydrogen generation by steam reforming of natural 

gas (SRI International 2007, Meyers 2004) and the off-gas streams from the hydrotreating and 

hydrocracking processes. The off-gas by itself is insufficient to produce the amount of hydrogen required 

by the hydrotreaters and hydrocrackers; supplemental natural gas is required. Most of the off-gas is used 

to fire the reformer; however, a portion of the off-gas is compressed and mixed with makeup natural gas 

which is then hydrodesulfurized (HDS). Hydrogen for the HDS unit is supplied by the off-gas stream. 

The gas exiting the HDS is then mixed with superheated steam and sent to the steam reformer to produce 

syngas. The syngas hydrogen content is increased by high temperature shift (HTS). After condensing out 

the water, the hydrogen is purified by pressure swing adsorption (PSA). Off-gas from the PSA is 

recycled to the reformer burners. 

Steam 

Reforming

H2

Natural 

Gas

Distillation Upgraded

Stable Oil

Light 

Stable Oil

Hydrocracker

Distillation

Gasoline

Diesel

Heavy 

Stable Oil

Off-Gas from 

Hydrotreaters

Off-gas

To 

Hydrotreaters

Off-gas
5.9 

Figure 5.4. Block Diagram of Hydrogen Production

Saturated and superheated steam are generated by recuperating heat from the reformer exhaust and 

during syngas cooling. The steam is used to provide steam to the reformer and heat for process heaters 

and distillation column reboilers. A steam export credit is taken for the small amount of excess steam not 

used by the process. The heat and material balance for the steam reformer can be found in Appendix A. 

5.5 Cooling Water and Utilities 

Cooling water usage is minimized through the use of air fin coolers where applicable. The process 

water demands are shown in Table 5.6. Most of the cooling tower water is used to indirectly cool the fast 

pyrolysis bio-oil that is recirculated in the quench system. Optimizing the quench process could reduce 

this value further. For example, chillers could supply some of the cooling, however this would increase 

the power demand. Electricity is bought from the grid; no power is generated onsite. Waste water is 

treated in an onsite facility before discharge. 

Table 5.6. Process Water Demands

Source of Water Demand Model

Cooling tower makeup, gpm 373

Steam reformer boiler feed water makeup, gpm 113

Total, gpm 486

Overall demand, gal water/gal product 3.0
5.10 

5.6 Process Yields and Consumptions 

The yield of product fuel from wood is shown in Table 5.7. The unadjusted yield, shown in the first 

row of Table 5.7, does not take into account the natural gas used in steam reforming for hydrogen 

production. It is of interest to know what the yield of fuel products would be if only renewable feedstocks 

were used. In the base case, hydrogen for the upgrading reactors is generated in a conventional steam 

reformer using offgas from the upgrading reactors plus natural gas. This hydrogen could also be derived 

from renewable resources, for example by 1) gasifying biomass, then shifting the syngas to hydrogen or 

by 2) steam reforming a portion of the fast pyrolysis oil. It is estimated that if the natural gas used to 

generate hydrogen was replaced by biomass or bio-oil, approximately one third of the biomass feedstock 

would be needed for hydrogen generation. The yield of fuel products on a 100% renewable basis is 

shown in the second row of Table 5.7. The third row of Table 5.7 shows the 100% renewable yield on an 

ethanol equivalent basis (lower heating value (LHV) adjusted). Table 5.7 also summarizes water, power 

and NG consumption. 

Table 5.7. Overall Yields and Consumption

Model

Fuel Product, gal/st dry wood – unadjusted for natural gas usage in the reformer 100

Fuel Product, gal/st dry wood – adjusted to 100% renewable feedstock basis 65

LHV ethanol equivalent Fuel Product, gal/st dry wood, 100% renewable basis ~100

Gallons makeup water/gallons fuel product 3.0

Power, kWh/gallon fuel product 2.5

Natural Gas, scf/gallon fuel product 42

Table 5.8 shows the carbon balance. More than half of the carbon in the combined biomass plus 

natural gas feed is converted into fuel products. 

Table 5.8. Carbon Balance

Feeds Biomass 88%

Natural Gas 12%

sum 100%

Fuel Products Gasoline Pool 23%

Diesel Pool 32%

Fuels sum 55%

Waste Products Pyrolysis Unit Exhaust 23%

Upgrading Wastewater 0%

Upgrading Heaters Exhaust 2%

Reformer Exhaust 20%

Waste sum 45%

The heat and material balance for the Stand-Alone Design Case is located in Appendix A. 
6.1 

6.0 Process Economics 

6.1 Capital Costs 

The cost basis assumes that this is the nth plant. Capital costs for the pyrolysis unit, the hydrocracker 

unit, and the hydrogen plant are from literature sources. The heat and material balance was used to size 

standard equipment using CHEMCAD© sizing routines or by using standard literature sources (Perry et 

al. 1984, Couper et al. 2005). ASPEN IcarusTM was used to obtain bare equipment costs for sized 

equipment. The 2007 annual Chemical Engineering Index was used to escalate capital costs to 2007. 

Equipment sizing and cost sources are summarized below. Additional details can be found in Appendix 

B. 

6.1.1 Pyrolysis Unit 

Existing pyrolysis units process 200 tpd of biomass or less, and capital cost data is limited. This 

report used data from Ringer et al. 2006, scaled to 2000 tpd. Costs associated with feed handling, 

pyrolysis reactor, quench, and product recovery were included. Heat recovery and power generation were 

excluded. The 35% equipment contingency used in Ringer et al. 2006 was retained. As seen in Table 

6.1, these costs are within the average of the data shown. 

Table 6.1. Pyrolysis Unit Literature Capital Cost

Study 

Date

Original Scale, 

mtpd

2007 TIC MM$ 

at 2000 tpd

Power, 

kW-h /tonne Source Notes

2003 96 68.7 40 (a) Cost for 5 96-tpd units

2003 490 55.5 156 (b) Estimated from 40-60 MWth data

2007 200 48.5 (c) Dynamotive Plant

2006 550 44.5 192 (d) TIC includes 35% equipment contingency

1990 1001 33.7 (e) 20 fluidized beds @ 100 tpd level

2003 500 39.2 156 (b) Estimated from 15-140 MWth data

2003 96 35.5 (f) Cost scaled with 6/10 rule

1990 1001 27.1 167 (e) 1 circulating fluidized-bed pyrolysis unit

(a) Bridgewater et al 2002

(b) Solantausta 2003

(c) Dynamotive 2007

(d) Ringer et al 2006

(e) Beckman et al 1990

(f) Johnson et al 2006

6.1.2 Pyrolysis Oil Hydrotreating and Hydrocracking 

Most of the equipment for this section were sized using CHEMCAD© and costed using ASPEN 

IcarusTM or taken from vendor budgetary quotes. The cost of a small hydrocracker system processing 

hydrotreated bio-oil has been estimated by UOP (Marker et al. 2005). The large-diameter, high-pressure 

hydrotreater vessels are likely to be manufactured outside of the United States. A 15% equipment 

contingency was added to account for uncertainty in the fabrication and hydrocracker unit costs. 
6.2 

6.1.3 Hydrogen Generation 

Hydrogen generation by steam reforming of natural gas is a well-known, mature process; therefore no 

equipment contingency was added. The SRI Yearbook (SRI International 2007) and Foster Wheeler

(Gulf 2006, Meyer 2004) have published capital and operating data for plants of various capacities. 

6.1.4 Balance of Plant 

Storage capacity and cooling tower capital were estimated with ASPEN Icarus. Wastewater 

treatment costs are from Beckman et al. 1990. A 15% process contingency was added. 

Table 6.2 and Table 6.3 list the stand-alone design case installed equipment capital costs and the 

factors used to determine the total project investment, respectively. The factors in Table 6.2 are from 

Peters et al (2003).

Table 6.2. Total Project Investment Cost for the Design Case Stand-Alone Plant

2007 MMUSD % Contribution

Fast Pyrolysis 92 30%

Hydrotreating 81 27%

Hydrocracking and Separations 29 10%

Hydrogen Generation 86 28%

Utilities, etc. 14 5%

303* 100

* Summation higher due to rounding

Table 6.3. Total Project Investment Factors 

Total Purchased Equipment Cost (TPEC) 100%

 Purchased Equipment Installation 39% of TPEC

 Instrumentation and Controls 26% of TPEC

 Piping 31% of TPEC

 Electrical Systems 10% of TPEC

 Buildings (including services) 29% of TPEC

 Yard Improvements 12% of TPEC

Total Installed Cost (TIC) 247%

Indirect Costs

 Engineering 32% of TPEC

 Construction 34% of TPEC

 Legal and Contractors Fees 23% of TPEC

 Project Contingency 37% of TPEC

 Total Indirect 126%

Total Project Investment 373%
6.3 

6.2 Operating Costs 

Table 6.4 lists the assumptions used to calculate the operating costs. Catalyst costs were escalated 

with the average Producer Price Index for 2007. 

Table 6.4. Operating Cost Assumptions

Value

Raw Materials

Hybrid Poplar Chips, $/dry short ton 50.70

Ash Disposal, $/short ton 18(a)

Hydrogen (refinery transfer), $/lb 0.56(b)

Hydrotreating Catalyst , $/lb (2007) 15.5

(c)

Hydrocracking Catalyst, $/lb (2007) 15.5

(c)

Hydrogen Plant Catalysts, $/1000 scf H2 (2007) 3.6(c)

Utilities

Natural Gas, $/1000scf (1000 Btu/scf) 7.68(d)

Electricity, ¢/kwh 6.36

(d)

Labor 

Operating labor, $/hr burdened & 10% shift overlap 37.66(c)

Maintenance and overhead 95% of labor & supervision(e)

Materials

Maintenance 2% of total project 

investment(e)

Local taxes & insurance 2% of total project investmente)

(a) Phillips et al. 2007

(b) Holmgren et al. 2007

(c) SRI International 2007

(d) Energy Information Agency 2007

(e) Phillips et al. 2007

6.3 Minimum Fuel Selling Price 

The minimum fuel product selling price (MFSP) for the gasoline and diesel blendstock was 

determined using a discounted cash flow rate of return analysis. The methodology is identical to that used 

in Phillips et al. (2007). The MFSP is the selling price of the fuel that makes the net present value of the 

process equal to zero with a 10% discounted cash flow rate of return over a 20 year plant life. The stream 

factor (90%) is lower than that used in Phillips et al. (2007) to account for the shorter catalyst life (1 year 

versus 5) assumed in this study. While two products are produced, (motor gasoline blendstock and diesel 
6.4 

blendstock), they are combined and referred to as a “fuel product” for simplicity. All MFSP calculations 

are performed and reported on a combined product basis. Table 6.5 gives the economic parameters used 

to calculate the MFSP. A sensitivity analysis was conducted to determine the effect of different financial 

and operating assumptions on the MFSP. 

Table 6.5. Economic Parameters

Value

Stream Factor 90%

MACRS Depreciation, yrs 7

(a)

Internal Rate of Return, % 10%(a)

Plant life, yrs 20(a)

Construction Period

 1

st 6 months‟ expenditure

 Next 12 months‟ expenditure

 Last 12 months‟ expenditure

2.5 years(a)

8%(a)

60%(a)

32%(a)

Start-up time

 Revenues

 Variable Costs

 Fixed Costs

6 months(a)

50%(a)

75%(a)

100%(a)

Working Capital 5% of Total Capital Investment(a)

Land 6% of Total Purchased Equipment Cost 

(taken as 1st year construction expense)(a)

(a) Phillips et al. 2007

The variable operating costs were determined from the heat and material balances and checked 

against published data for the hydrocracker and steam reformer. These and the fixed operating costs are 

shown in Table 6.6. 
6.5 

Table 6.6. Project Economics for the Stand-Alone Design Case Plant

$/gal product Contribution

Feedstock 0.48 23%

Natural Gas 0.32 16%

Catalysts & Chemicals 0.15 7%

Waste Disposal 0.01 0%

Utilities (Cooling Water, Electricity, Steam) 0.17 8%

Fixed Costs (Labor, Operating Supplies, etc.) 0.22 11%

Capital Depreciation 0.20 10%

Average Income Tax 0.13 7%

Average ROI 0.36 18%

MFSP, $/gal 2.04

MFSP Ethanol Equivalent Basis, $/gal 1.34

The 2007 average refiner prices for gasoline and diesel were $2.18 and $2.20 respectively (Energy 

Information Agency 2007). Thus, at $2.04/gal fuel product price, there is incentive to pursue motor fuels 

from biomass. 

7.1 

7.0 Economic and Technical Sensitivities 

The design case describes a single operating point for a stand-alone processing unit. This section 

investigates the production cost sensitivities to technical, financial, and market issues. These include 

plant size, ROI, feedstock costs, reactor conditions and product yields. Because hydrocarbon fuels are the 

final product, an important sensitivity is the possibility of co-locating the pyrolysis and upgrading facility 

with an existing refinery. 

7.1 Co-location with a Refinery 

An alternate configuration to the standalone plant described in Section 5 is a facility that is co-located 

with an existing refinery. Figure 7.1 shows the design case integrated with a refinery. The pyrolysis unit 

is the same as in the stand-alone case. Co-location eliminates the need for a PSA unit in the hydrotreating 

section if the upgrading unit off-gas can be sent to refinery hydrogen generation. In return, the upgrading 

unit receives refinery hydrogen at a lower cost. All final processing of the stable oil to fuels occurs in the 

refinery. 

Figure 7.1. Block Diagram of Pyrolysis and Upgrading Plant Co-located with a Refinery

VTT and partners (Solantuasta 2006) and UOP (Marker et al 2005, Holmgren et al 2007) are 

separately pursuing producing bioproducts compatible with existing refinery infrastructure. This will 

lessen the initial investment; however, direct use of stable oil in a refinery requires complete 

deoxygenation and a low acid number to prevent corrosion. As an alternative, a finishing deoxygenation 

unit and/or a separate hydrotreating/hydrocracking operation using dedicated stainless steel equipment 

may be needed. The finishing hydrotreating unit may result in saturating aromatic compounds, in which 

case the light naphtha portion may need to be reformed in the refinery into aromatics before blending into 

gasoline. 
7.2 

Table 7.1 compares the stand-alone and integrated economics. The capital cost calculations assume 

that the refinery equipment is fully depreciated and only operating costs apply to the refinery side. This 

greatly reduces the capital investment. A hydrogen transfer price of $0.56/lb (Holmgren et al 2007) 

assumes that all operating costs (including feedstock and fuel) to the hydrogen generation unit within the 

refinery are accounted for in that price. A credit is taken for the fuel gas sent from the upgrading unit to 

the refinery. The transfer price for the fuel gas to the refinery is determined by adjusting the current price 

of natural gas for the Btu value of the fuel gas. The product costs are significantly lower than those for 

the stand-alone plant due to reduced capital investment and the net cost difference between hydrogen and 

fuel gas. 

Table 7.1. Comparison of Integrated and Standalone Facilities

Capital 

Investment, 

MM$

Minimum Selling 

Price $/gal fuel 

product

Minimum Selling 

Price $/gal ethanol 

equivalent

Stand-Alone Plant – Design 

Case

303 2.04 1.34

Integrated Plant – Design Case 188 1.74 1.14

7.2 Financial and Market Sensitivities 

The sensitivities to financial assumptions are shown in Figure 7.2. Refinery integration with a 

$0.56/lb hydrogen transfer price reduces the base case MFSP by about $0.30/gal. No refining capital 

costs were assumed. However, operating costs based on the amount of stable oil processed were 

included. It is possible that some revamping of refinery equipment will be needed to process the stable 

oil. The cost of modifying a hydrocracker was estimated by assuming that the incurred costs would not 

be greater than a small hydrocracker dedicated to stable oil. At a $0.56/lb hydrogen transfer price, this 

option reduces the base MFSP by about $0.13/gal. Finally, the hydrogen transfer price in an integrated 

facility was varied by $0.75/lb and $1.25/lb hydrogen. The MFSP of the integrated facility exceeds that 

of the base case at hydrogen transfer prices above $1.00/lb, which is the approximate transfer price for 

hydrogen if new hydrogen generation facilities must be built. 

Sensitivities to project contingency, capital investment, scale and ROI were determined for the standalone case. Reducing the project contingency to three percent of the total capital project, (similar to that 

used in Phillips et al. 2007), reduces the selling price by about $0.22/gal. The accuracy of the capital 

estimate is in the range of -10% to +40%, and gives an MFSP range of $1.79/gal to $2.22/gal or a 

difference of -0.22/gal to +$0.20/gal. 

The base plant assumes a 90% stream factor. This may be optimistic with single reactors for fast 

pyrolysis and upgrading. The equipment spare sensitivity determines the product cost increase if both the 

pyrolysis unit and upgrading units had 3 reactors at 50% capacity each. This increases the selling price 

by about $0.21/gal. 

The cost of a single small pyrolysis with an upgrading unit at 500 tpd increases the selling price to 

almost $2.68/gal. Four 500 tpd units feeding a single upgrading unit is more cost effective, assuming the 

feedstock cost is the same for both cases. The cost of transporting biomass feedstock is a limiting factor 
7.3 

in the size of a biomass processing plant. It is possible that small, distributed pyrolysis plants can take 

advantage of lower feedstock costs and produce an easily transported product that can then be upgraded to 

fuel in a large, centralized facility. Further analysis is needed to look at the tradeoff between pyrolysis 

plant size and feedstock cost, and the transportation costs to a centralized upgrading plant. 

MFSP ($/gallon fuel)

0% ROI

Plant Size at 500 tpd

4x500 tpd Pyrolysis Units

Equipment Spares

Plant Size at 5000 tpd

Total Project Investment -

10%

Total Project Investment 

+40%

3% Project Contingency

0% Project Contingency

Integrated: $0.75/lb H2

Integrated w Capital 

Upgrades

Integrated: $0.56/lb H2

Integrated: $1.25/lb H2

1.30 1.40 1.50 1.60 1.70 1.80 1.90 2.00 2.10 2.20 2.30 2.40 2.50 2.60 2.70 2.80 2.90 3.00 3.10

MFSP ($/gallon fuel)

30% ROI

2.00 2.10 2.20 2.30 2.40 2.50 2.60 2.70 2.80 2.90 3.00 3.10 3.20 3.30 3.40 3.50 3.60 3.70 3.80

Figure 7.2. Financial/Market Sensitivities

The base case assumes a 10% ROI. A 30% return (shown on a separate scale to prevent making the 

other sensitivities illegible) nearly doubles the baseline estimated selling price. The 0% return represents 

the plant gate costs. 

7.3 Research Sensitivities 

The research sensitivities are shown in Figure 7.3. Feedstock cost, reactor space velocity, reactor 

pressure, and catalyst life all impact the minimum selling price for the standalone case. None of these 

costs alone make the process uneconomic. However, the potential combined effects, such as catalyst life 

and space velocity, are significant enough to warrant further research. Catalyst costs are important 

because there is little data on life and the appropriate catalyst composition. As a base case, this study 

assumes standard hydrotreating and hydrocracking catalysts. 

The base case assumes that the two stage hydrotreaters described in Section 5.2 sufficiently 

deoxygenate the stable oil, and only the heavy tail end requires hydrocracking. If this is not sufficient, 
7.4 

and the entire stable oil stream is sent to the hydrocracker, the size of the hydrocracker increases 

significantly. Hydrocracking the entire stable oil stream adds $0.10/gal to price of the fuel. 

MFSP ($/gallon fuel)

Hydrocrack Entire Stable 

Oil Stream

$30/lb Hydrotreater 

Catalyst

$100/lb Hydrotreater 

Catalyst

0.5 Year Catalyst Life

5 Year Catalyst Life

800 psig Reactor Pressure

1500 psig Reactor 

Pressure

0.1 LHSV 

0.3 LHSV

$35/ton Feedstock

$80/ton Feedstock

1.50 1.60 1.70 1.80 1.90 2.00 2.10 2.20 2.30 2.40 2.50 2.60 2.70 2.80 2.90 3.00 3.10

Figure 7.3. Research Sensitivities
8.1 

8.0 Conclusions and Recommendations 

This analysis suggests that production of hydrocarbon motor fuels from biomass via the pyrolysis 

route is potentially economically attractive. The cost becomes even more favorable if the facility can be 

closely associated with an existing petroleum refinery to leverage that infrastructure. Both the standalone plant that combines fast pyrolysis with hydrotreating, upgrading and hydrocracking to fuels and the 

refinery-integrated plant fit with the existing infrastructure in terms of products and processing methods. 

Developing partnerships with industry suppliers and refiners is important for production development and 

product acceptance. 

The pyrolysis pathway for producing hydrocarbon fuels is economically competitive with either the 

biological or thermochemical pathways for production of ethanol fuels. On an energy-equivalent basis, as 

shown in Table 7.1, the costs of either hydrocarbon or alcohol fuels are essentially the same when 

consistent analysis methodologies and underlying financial assumptions are used. 

As indicated previously, other pyrolytic processes exist, and the economics of those processes may be 

different from the one analyzed here. This analysis suggests that cost-effective processing routes to 

hydrocarbon fuels exist, but does not attempt to compare this approach with others. If other pyrolytic 

processing routes have lower costs, the production of hydrocarbon fuels will be even more attractive. 

The analysis describes a system with performance projected to be available in 2012. Further research 

and development is needed to understand the limitations of the process and where improvements can be 

made. The sensitivity analysis (Figure 7.3) suggests that the biggest impacts of technical improvements 

are in the area of catalysis as it relates to bio-oil upgrading. Catalyst lifetimes and performance are 

essential to the process and need additional development and testing. Pyrolytic processing of the biomass 

is a relatively small percentage of the overall cost, and changes to the pyrolysis process will have little 

direct impact on the fuel cost. However, research on pyrolytic processing that leads to a better quality 

bio-oil requiring less upgrading could also potentially reduce product costs. 

The analysis (Figure 7.2) also shows the fuel costs are highly sensitive to plant size and ROI. The 

close coupling of the upgrading steps with a petroleum refinery helps leverage the economies of scale in 

the fuel production steps. The pyrolysis step to produce bio-oil is less sensitive to scale and can 

potentially be decoupled from the fuel upgrading step. This analysis uses figures for ROI that are 

consistent with previous biofuels analyses produced by DOE and allow comparison with other technology 

options. Industries attempting to build actual facilities may use different assumptions, and the costs for 

the resulting fuels would change accordingly. 

To achieve the potential for producing hydrocarbon fuels from biomass, additional research and 

development are needed. A summary of needs includes the following: 

Understand the trade-off between the size of the pyrolysis oil plant and feedstock and transportation 

costs to a centralized upgrading facility. 

Incorporate the reductions in feed preprocessing (grinding and drying) by using a reactor ready feed. 

Understand pyrolysis reactor and upgrading reactor scale-up limitations if any. 

Improve the quality and consistency of bio-oil. 
8.2 

Determine detailed characterization of upgraded oil and products, for example: 

– boiling point curves and densities 

– compound types (% aromatics, naphthenes, olefins, iso and normal) within the gasoline, diesel 

and heavy fraction ranges 

– acid number. 

Conduct catalyst life studies for the pyrolysis oil upgrading catalysts. 

Develop better understanding of reactor limitations and opportunities by developing a predictive 

pyrolysis-oil production model and upgrading the reactor model to replace the stoichiometric models 

used in this study. 

Determine stable oil and product fuel specifications for oil refinery acceptance. 

In addition, there are new initiatives for an advanced pyrolysis process for biomass, the details of 

which fall outside this base-case study. Incorporation of those new concepts into economic assessments 

of future cases for biomass pyrolysis should be the next stage of analysis. Advanced pyrolysis processes 

may include: 

new reactor system engineering involving improved heat transfer mechanisms 

pyrolysis including in-situ catalysis 

pyrolysis including in-situ chemical processing 

post pyrolysis processing to improve product bio-oil properties 

in-process separation systems to produce bio-oil fractions with useful properties 

post-process separations and subsequent treatment to produce improved products 

higher efficiency integrated systems with improved heat utilization. 
9.1 

9.0 References 

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9.2 

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A.4 

Appendix A 

Design Case – Stand-Alone Heat and Material Balance 
A.1

Air

Quench

Water

Wet

Ash

Exhaust

P

Int

R

G

Fuel

Gas

Sand

Recycle

Fluidizing

Gas

Flue

Gas

100

106

105

111

116

148

147

130

138

140

161

144

145

133

Ash

Trim

Cooler

Demister

Sand

Heater

Dryer

Char and

Sand

113

Quench

120

126

CWS

CWR 1810

1811

Pyrolyzer

137

139

131

Figure A.1. Flow Diagram for Pyrolysis Unit 
A.2

Table A.1. Pyrolysis Unit Heat and Material Balance 

Stream No. 100 105 106 111 113 116 120 126 130 131 133

Temp C 20 176.587 66 499.421 499.421 592 15.5555 1211.84 499.421 43.7381 43.746

Pres psig 3 3 3 1 1 1 0.3041 3 1 1 10

Enth MMBtu/h -1743 -1324.9 -575.9 -6192.3 -5449.1 -5322.2 -1.4752 -157.77 -743.17 -96574 -96573

Vapor mass fraction 0 1 0 1 1 0 1 1 1 0 4.17E-05

Total lb/h 367436 560708 197546 3135535 2779270 2755767 350000 390817 356265 2.7E+07 2.7E+07

Flowrates in lb/h

Oxygen 0 24433.8 0 3873.85 3873.85 0 81520.1 24435 0 0 0

Nitrogen 0 269595 0 10673.8 0 0 268480 269595 10673.8 80.5111 80.496

Water 183718 180076 13828.2 32280.7 0 0 0 10186 32280.7 4480534 4480506

Hybrid Poplar 183718 0 183718 0.0041 0.0041 0 0 0 0 0 0

Hydrogen 0 2.0727 0 1403.29 963.918 0 0 2.0729 439.369 1.3593 1.359

Carbon 0 0 0 15065.9 15065.9 0 0 0 0 0 0

Carbon Monoxide 0 513.829 0 175437 0 0 0 513.888 175437 1272.26 1272.03

Carbon Dioxide 0 86088.1 0 9738.7 0 0 0 86085.5 9738.7 2331.92 2331.05

Methane 0 0.0002 0 876.195 0 0 0 0.0002 876.195 27.2094 27.2046

Ethylene 0 0.0004 0 3488.06 0 0 0 0.0004 3488.06 475.291 475.223

Ethane 0 0 0 0 0 0 0 0 0 0 0

Propylene 0 0.0006 0 3629.54 0 0 0 0.0006 3629.54 2174.05 2173.91

Propane 0 0 0 0 0 0 0 0 0 0 0

I-Butane 0 0 0 0 0 0 0 0 0 0 0

Ammonia 0 0.0003 0 285.508 0 0 0 0.0003 285.508 468.22 468.193

Pyro-lignin 0 0 0 64485 0 0 0 0 64485 1.2E+07 1.2E+07

Cellobiose 0 0 0 22689.1 0 0 0 0 22689.1 4500798 4501477

Levoglucosan 0 0 0 5970.83 0 0 0 0 5970.83 1087896 1087571

Furfural 0 0 0 11941.7 0 0 0 0 11941.7 2078346 2078007

HydroxyAcetone 0 0 0 5970.83 0 0 0 0 5970.83 1098279 1098360

Acetic Acid 0 0 0 8359.16 0 0 0 0 8359.16 1192790 1192921

Formaldehyde 0 0 0 0 0 0 0 0 0 0 0

2-5-Xylenol 0 0 0 0 0 0 0 0 0 0 0

N-Heptane 0 0 0 0 0 0 0 0 0 0 0

1-ts-35-3C1CycC6 0 0 0 0 0 0 0 0 0 0 0

3-3-5-TriMth-C7 0 0 0 0 0 0 0 0 0 0 0

N-PropylCyc-C6 0 0 0 0 0 0 0 0 0 0 0

1-2-3-Mesitylene 0 0 0 0 0 0 0 0 0 0 0

N-ButylCycHexane 0 0 0 0 0 0 0 0 0 0 0

1-2-DiC1-3C2-Bz 0 0 0 0 0 0 0 0 0 0 0

Cis-Decalin 0 0 0 0 0 0 0 0 0 0 0

Dimethyl-C11 0 0 0 0 0 0 0 0 0 0 0

1-2-4-triethylbe 0 0 0 0 0 0 0 0 0 0 0

1-1-Bicyclohexyl 0 0 0 0 0 0 0 0 0 0 0

Diphenyl 0 0 0 0 0 0 0 0 0 0 0

diamantane 0 0 0 0 0 0 0 0 0 0 0

Phenanthrene 0 0 0 0 0 0 0 0 0 0 0

N-C15-CycloC5 0 0 0 0 0 0 0 0 0 0 0

Hexatriacontane 0 0 0 0 0 0 0 0 0 0 0

Ca 0 0 0 3496.15 3496.15 0 0 0 0 0 0

Sulphur 0 0 0 36.0271 36.0271 0 0 0 0 0 0

Calcium Chloride 0 0 0 67.057 67.057 0 0 0 0 0 0

Sand 0 0 0 2755767 2755767 2755767 0 0 0 0 0
A.3

Table A.1. (contd) 

Stream No. 137 138 139 140 144 145 146 147 148 150 161

Temp C 43.746 37.7778 43.746 43.7381 43.7381 43.7381 91.8145 91.8145 91.8145 43.7199 105.294

Pres psig 10 5 10 1 1 1 8 8 8 1 3

Enth MMBtu/h -96072 -96222 -501.34 -391.99 -69.9 -332.32 -327.7 -33.491 -294.2 -571.24 -37.313

Vapor mass fraction 4.17E-05 4.70E-05 4.17E-05 1 0 1 1 1 1 5.38E-05 0.50092

Total lb/h 3E+07 2.7E+07 139274 216984 12363 204621 204621 20912.8 183708 151637 9599.24

Flowrates in lb/h

Oxygen 0 0 0 0 0 0 0 0 0 0 0

Nitrogen 80.078 80.0782 0.4179 10673.4 0 10673.4 10673.4 1090.85 9582.52 0.4179 0

Water 4E+06 4457246 23259.8 8992.01 8902.09 89.9201 89.9201 9.1901 80.73 32161.8 6000

Hybrid Poplar 0 0 0 0 0 0 0 0 0 0 0

Hydrogen 1.352 1.352 0.0071 439.362 0 439.362 439.362 44.904 394.458 0.0071 0

Carbon 0 0 0 0 0 0 0 0 0 0 0.0002

Carbon Monoxide 1265.4 1265.43 6.6035 175430 0 175430 175430 17929.4 157500 6.6035 0

Carbon Dioxide 2319 2318.95 12.1013 9725.74 0 9725.74 9725.74 993.998 8731.74 12.1012 0

Methane 27.063 27.0633 0.1412 876.049 0 876.049 876.049 89.5347 786.514 0.1412 0

Ethylene 472.76 472.756 2.467 3485.52 0 3485.52 3485.52 356.23 3129.29 2.467 0

Ethane 0 0 0 0 0 0 0 0 0 0 0

Propylene 2162.6 2162.62 11.2855 3618.11 0 3618.11 3618.11 369.781 3248.33 11.2855 0

Propane 0 0 0 0 0 0 0 0 0 0 0

I-Butane 0 0 0 0 0 0 0 0 0 0 0

Ammonia 465.76 465.763 2.4305 283.051 0 283.051 283.051 28.9286 254.123 2.4305 0

Pyro-lignin 1E+07 1.2E+07 64281.4 0.044 0.044 0 0 0 0 64281.4 0

Cellobiose 4E+06 4478109 23368.6 0.0129 0.0129 0 0 0 0 23368.7 0

Levoglucosan 1E+06 1081925 5645.94 0.0011 0.0011 0 0 0 0 5645.94 0

Furfural 2E+06 2067219 10787.6 814.207 814.207 0 0 0 0 11601.8 0

HydroxyAcetone 1E+06 1092658 5701.95 349.864 349.864 0 0 0 0 6051.81 0

Acetic Acid 1E+06 1186728 6192.84 2296.82 2296.82 0 0 0 0 8489.66 0

Formaldehyde 0 0 0 0 0 0 0 0 0 0 0

2-5-Xylenol 0 0 0 0 0 0 0 0 0 0 0

N-Heptane 0 0 0 0 0 0 0 0 0 0 0

1-ts-35-3C1CycC6 0 0 0 0 0 0 0 0 0 0 0

3-3-5-TriMth-C7 0 0 0 0 0 0 0 0 0 0 0

N-PropylCyc-C6 0 0 0 0 0 0 0 0 0 0 0

1-2-3-Mesitylene 0 0 0 0 0 0 0 0 0 0 0

N-ButylCycHexane 0 0 0 0 0 0 0 0 0 0 0

1-2-DiC1-3C2-Bz 0 0 0 0 0 0 0 0 0 0 0

Cis-Decalin 0 0 0 0 0 0 0 0 0 0 0

Dimethyl-C11 0 0 0 0 0 0 0 0 0 0 0

1-2-4-triethylbe 0 0 0 0 0 0 0 0 0 0 0

1-1-Bicyclohexyl 0 0 0 0 0 0 0 0 0 0 0

Diphenyl 0 0 0 0 0 0 0 0 0 0 0

diamantane 0 0 0 0 0 0 0 0 0 0 0

Phenanthrene 0 0 0 0 0 0 0 0 0 0 0

N-C15-CycloC5 0 0 0 0 0 0 0 0 0 0 0

Hexatriacontane 0 0 0 0 0 0 0 0 0 0 0

Ca 0 0 0 0 0 0 0 0 0 0 3496.16

Sulphur 0 0 0 0 0 0 0 0 0 0 36.0271

Calcium Chloride 0 0 0 0 0 0 0 0 0 0 67.057

Sand 0 0 0 0 0 0 0 0 0 0 0
A.4

Table A.1. (contd) 

Stream No. 1810 1811

Temp C 32.2222 40.5555

Pres psig 50 45

Enth MMBtu/h -68430 -68279

Vapor mass fraction 0 0

Total lb/h 10044315 10044310

Flowrates in lb/h

Oxygen 0 0

Nitrogen 0 0

Water 10044315 10044310

Hybrid Poplar 0 0

Hydrogen 0 0

Carbon 0 0

Carbon Monoxide 0 0

Carbon Dioxide 0 0

Methane 0 0

Ethylene 0 0

Ethane 0 0

Propylene 0 0

Propane 0 0

I-Butane 0 0

Ammonia 0 0

Pyro-lignin 0 0

Cellobiose 0 0

Levoglucosan 0 0

Furfural 0 0

HydroxyAcetone 0 0

Acetic Acid 0 0

Formaldehyde 0 0

2-5-Xylenol 0 0

N-Heptane 0 0

1-ts-35-3C1CycC6 0 0

3-3-5-TriMth-C7 0 0

N-PropylCyc-C6 0 0

1-2-3-Mesitylene 0 0

N-ButylCycHexane 0 0

1-2-DiC1-3C2-Bz 0 0

Cis-Decalin 0 0

Dimethyl-C11 0 0

1-2-4-triethylbe 0 0

1-1-Bicyclohexyl 0 0

Diphenyl 0 0

diamantane 0 0

Phenanthrene 0 0

N-C15-CycloC5 0 0

Hexatriacontane 0 0

Ca 0 0

Sulphur 0 0

Calcium Chloride 0 0

Sand 0 0
A.5

F-210

E-202

E-206

T-240

E-221

V-225

E-226

E-220

Hydrogen From H2

Plant

V-222

Pyrolysis Oil From

Intermediate

Storage

First Stage

Hydrotreater

PSA

Low Pressu

Flash

High Pressure

Flash

CWS

CWR

To De-

Waste Water

Fuel Gas

To Reformer

To Heaters

200 253

258

202

215

220 208

212

207

205

221

223

226

227

270

225

242

250

230

C-253 a,b,c

Condensate

R-215

R-205

Steam

Second

Stage

Hydrotreater

1821

1820

738

736

245

240

203

213

Figure A.2. Flow Diagram for Pyrolysis Oil Stabilization 
A.6

Table A.2. Pyrolysis Oil Hydrotreating Heat and Material Balance 

Stream No. 200 202 203 205 207 208 212 213 215 220 221

Temp F 110.6798 174.8342 430 465.5045 470 700 484.8971 481.4931 319.3935 150 110

Pres psig 1 2500 2495 2495 2490 2475 2475 2470 710.3041 705.3041 700.3041

Enth MMBtu/h -579.38 -572.13 -533.75 -533.75 -532.53 -493.17 -493.17 -494.39 -532.77 -560.91 -566.01

Vapor mass fraction 0 0.062243 0.15953 0.24881 0.25969 0.52647 0.6898 0.67505 0.22969 0.12881 0.12332

Total lb/h 151607.6 161371 161371 161371 161371 161371 161371 161374.8 161374.8 161374.8 161374.8

Flowrates in lb/h

Water 32161.65 32161.64 32161.64 44375.22 44375.22 44375.22 71936 71936 71936 71936 71936

Hydrogen 0 9763.431 9763.431 8474.411 8474.411 8474.411 3839.811 3843.556 3843.557 3843.557 3843.557

Carbon Dioxide 0 0 0 1000 1000 1000 9000.002 9000.002 9000.003 9000.003 9000.004

Methane 0 0 0 50 50 50 3350 3350 3350 3350 3350

Ethane 0 0 0 6.9 6.9 6.9 2006.899 2006.9 2006.9 2006.9 2006.9

Propane 0 0 0 5.1 5.1 5.1 1705.1 1705.101 1705.101 1705.101 1705.101

I-Butane 0 0 0 4.4 4.4 4.4 1504.4 1504.4 1504.4 1504.4 1504.4

Pyro-lignin 64305.6 64305.58 64305.58 54819.78 54819.78 54819.79 0 0 0 0 0

Cellobiose 23313.63 23313.62 23313.62 13988.17 13988.17 13988.17 0.0037 0.0051 0.0051 0.0051 0.0051

Levoglucosan 5674.065 5674.063 5674.063 2724.021 2724.021 2724.021 0.001 0.0014 0.0014 0.0014 0.0014

Furfural 11633.4 11633.4 11633.4 0 0 0 0 0 0 0 0

HydroxyAcetone 6044.922 6044.922 6044.922 4835.938 4835.938 4835.938 0 0 0 0 0

Acetic Acid 8474.371 8474.367 8474.367 5084.619 5084.619 5084.619 0 0 0 0 0

2-5-Xylenol 0 0 0 26002.45 26002.45 26002.45 8000.004 8000.002 8000.001 8000.001 8000.001

N-Heptane 0 0 0 0 0 0 3275.653 3275.653 3275.654 3275.654 3275.655

1-ts-35-3C1CycC6 0 0 0 0 0 0 4892.768 4892.769 4892.768 4892.768 4892.769

3-3-5-TriMth-C7 0 0 0 0 0 0 1994.707 1994.707 1994.707 1994.707 1994.707

N-PropylCyc-C6 0 0 0 0 0 0 4892.767 4892.769 4892.769 4892.769 4892.77

1-2-3-Mesitylene 0 0 0 0 0 0 642.0663 642.0664 642.0664 642.0664 642.0665

N-ButylCycHexane 0 0 0 0 0 0 234.2028 234.2029 234.2029 234.2029 234.2029

1-2-DiC1-3C2-Bz 0 0 0 0 0 0 1593.217 1593.217 1593.217 1593.217 1593.217

Cis-Decalin 0 0 0 0 0 0 3186.433 3186.433 3186.433 3186.433 3186.433

Dimethyl-C11 0 0 0 0 0 0 8635.319 8635.321 8635.321 8635.321 8635.322

1-2-4-triethylbe 0 0 0 0 0 0 3186.432 3186.434 3186.434 3186.434 3186.433

1-1-Bicyclohexyl 0 0 0 0 0 0 238.9825 238.9825 238.9825 238.9825 238.9825

Diphenyl 0 0 0 0 0 0 4383.289 4383.289 4383.289 4383.289 4383.289

diamantane 0 0 0 0 0 0 8635.319 8635.321 8635.321 8635.321 8635.322

Phenanthrene 0 0 0 0 0 0 6087.9 6087.901 6087.901 6087.901 6087.902

N-C15-CycloC5 0 0 0 0 0 0 291.442 291.4421 291.442 291.442 291.442

Hexatriacontane 0 0 0 0 0 0 0 0 0 0 0

Chrysene 0 0 0 0 0 0 6120.283 6120.284 6120.283 6120.283 6120.283

Cyclopentane 0 0 0 0 0 0 0 0 0 0 0

N-Pentadecane 0 0 0 0 0 0 0 0 0 0 0

N-Octadecane 0 0 0 0 0 0 0 0 0 0 0

Tetralin 0 0 0 0 0 0 0 0 0 0 0

Ethylbenzene 0 0 0 0 0 0 0 0 0 0 0

Benzene 0 0 0 0 0 0 0 0 0 0 0

N-Butane 0 0 0 0 0 0 0 0 0 0 0

Toluene 0 0 0 0 0 0 0 0 0 0 0

1-3-5-Mesitylene 0 0 0 0 0 0 0 0 0 0 0

P-Xylene 0 0 0 0 0 0 1738.065 1738.064 1738.064 1738.064 1738.065

N-Propylbenzene 0 0 0 0 0 0 0.0131 0.0102 0.0102 0.0102 0.0102
A.7

Table A.2. (contd) 

Stream No. 223 225 226 227 230 240 242 245 250 253 258

Temp F 100 99.9329 99.9329 200 100 100 44.3597 100 77 84.6947 303.1303

Pres psig 700.3041 35.3041 35.3041 35.3041 700.3041 700.3041 35 300 300 300 2500

Enth MMBtu/h -33.374 -0.07606 -33.298 -30.008 -487.88 -46.01 -45.02 -0.20059 -0.90996 -1.1106 6.2841

Vapor mass fraction 0 1 0 0.000449 0 1 0.99656 1 1 1 1

Total lb/h 69520.25 25.2322 69495.02 69495.01 72156.03 19698.48 16435.05 3263.436 6500 9763.431 9763.431

Flowrates in lb/h

Water 242.2865 0.2879 241.9986 241.9986 71621.36 72.3108 72.3111 0 0 0 0

Hydrogen 0.4663 0.455 0.0113 0.0113 3.7543 3839.336 575.9001 3263.436 6500 9763.431 9763.431

Carbon Dioxide 31.1286 17.3243 13.8043 13.8043 250.624 8718.251 8718.251 0 0 0 0

Methane 0.6464 0.6206 0.0258 0.0258 5.2046 3344.148 3344.149 0 0 0 0

Ethane 0.5571 0.5241 0.0331 0.0331 0.0423 2006.3 2006.3 0 0 0 0

Propane 730.0195 3.4583 726.5612 726.5612 17.2753 957.8062 957.8062 0 0 0 0

I-Butane 889.0693 2.1131 886.9562 886.9562 6.5343 608.7963 608.7963 0 0 0 0

Pyro-lignin 0 0 0 0 0 0 0 0 0 0 0

Cellobiose 0 0 0 0 0.0051 0 0 0 0 0 0

Levoglucosan 0 0 0 0 0.0014 0 0 0 0 0 0

Furfural 0 0 0 0 0 0 0 0 0 0 0

HydroxyAcetone 0 0 0 0 0 0 0 0 0 0 0

Acetic Acid 0 0 0 0 0 0 0 0 0 0 0

2-5-Xylenol 7748.411 0.0064 7748.406 7748.406 249.3144 2.2761 2.2761 0 0 0 0

N-Heptane 3193.759 0.2507 3193.508 3193.508 0.7128 81.1817 81.1817 0 0 0 0

1-ts-35-3C1CycC6 4857.789 0.0991 4857.69 4857.689 0.1593 34.8195 34.8196 0 0 0 0

3-3-5-TriMth-C7 1987.447 0.0195 1987.427 1987.427 0.015 7.2457 7.2457 0 0 0 0

N-PropylCyc-C6 4878.879 0.0392 4878.839 4878.839 0.1611 13.7284 13.7284 0 0 0 0

1-2-3-Mesitylene 641.6517 0.001 641.6508 641.6508 0.0785 0.3363 0.3363 0 0 0 0

N-ButylCycHexane 233.9581 0.0007 233.9575 233.9575 0.0024 0.2423 0.2423 0 0 0 0

1-2-DiC1-3C2-Bz 1592.735 0.0012 1592.733 1592.733 0.0573 0.4248 0.4248 0 0 0 0

Cis-Decalin 3184.489 0.0052 3184.483 3184.483 0.0499 1.8948 1.8948 0 0 0 0

Dimethyl-C11 8633.4 0.0045 8633.395 8633.395 0.0018 1.9188 1.9189 0 0 0 0

1-2-4-triethylbe 3186.106 0.0008 3186.105 3186.105 0.0099 0.3178 0.3178 0 0 0 0

1-1-Bicyclohexyl 238.9565 0.0001 238.9565 238.9565 0.0004 0.0256 0.0256 0 0 0 0

Diphenyl 4383.134 0.0003 4383.133 4383.133 0.0454 0.1092 0.1092 0 0 0 0

diamantane 8633.234 0.0054 8633.229 8633.229 0.0045 2.0826 2.0826 0 0 0 0

Phenanthrene 6087.885 0 6087.884 6087.884 0.0107 0.0052 0.0052 0 0 0 0

N-C15-CycloC5 291.442 0 291.442 291.442 0 0.0001 0.0001 0 0 0 0

Hexatriacontane 0 0 0 0 0 0 0 0 0 0 0

Chrysene 6120.283 0 6120.283 6120.283 0.0003 0 0 0 0 0 0

Cyclopentane 0 0 0 0 0 0 0 0 0 0 0

N-Pentadecane 0 0 0 0 0 0 0 0 0 0 0

N-Octadecane 0 0 0 0 0 0 0 0 0 0 0

Tetralin 0 0 0 0 0 0 0 0 0 0 0

Ethylbenzene 0 0 0 0 0 0 0 0 0 0 0

Benzene 0 0 0 0 0 0 0 0 0 0 0

N-Butane 0 0 0 0 0 0 0 0 0 0 0

Toluene 0 0 0 0 0 0 0 0 0 0 0

1-3-5-Mesitylene 0 0 0 0 0 0 0 0 0 0 0

P-Xylene 1732.51 0.015 1732.494 1732.494 0.6275 4.927 4.927 0 0 0 0

N-Propylbenzene 0.0102 0 0.0102 0.0102 0 0 0 0 0 0 0
A.8

Table A.2. (contd) 

Stream No. 270 736 738 1820 1821

Temp F 44.4289 700.0002 496.55 90 105

Pres psig 35 645 645 60 55

Enth MMBtu/h -45.096 -22.468 -25.758 -2320.7 -2315.6

Vapor mass fraction 0.99656 1 1.00E-06 0 0

Total lb/h 16460.28 4037.127 4037.127 341022.1 341022.1

Flowrates in lb/h

Water 72.5986 4037.127 4037.127 341022.1 341022.1

Hydrogen 576.3552 0 0 0 0

Carbon Dioxide 8735.575 0 0 0 0

Methane 3344.769 0 0 0 0

Ethane 2006.824 0 0 0 0

Propane 961.2645 0 0 0 0

I-Butane 610.9094 0 0 0 0

Pyro-lignin 0 0 0 0 0

Cellobiose 0 0 0 0 0

Levoglucosan 0 0 0 0 0

Furfural 0 0 0 0 0

HydroxyAcetone 0 0 0 0 0

Acetic Acid 0 0 0 0 0

2-5-Xylenol 2.2824 0 0 0 0

N-Heptane 81.4324 0 0 0 0

1-ts-35-3C1CycC6 34.9186 0 0 0 0

3-3-5-TriMth-C7 7.2652 0 0 0 0

N-PropylCyc-C6 13.7676 0 0 0 0

1-2-3-Mesitylene 0.3373 0 0 0 0

N-ButylCycHexane 0.243 0 0 0 0

1-2-DiC1-3C2-Bz 0.426 0 0 0 0

Cis-Decalin 1.9 0 0 0 0

Dimethyl-C11 1.9233 0 0 0 0

1-2-4-triethylbe 0.3186 0 0 0 0

1-1-Bicyclohexyl 0.0257 0 0 0 0

Diphenyl 0.1094 0 0 0 0

diamantane 2.088 0 0 0 0

Phenanthrene 0.0052 0 0 0 0

N-C15-CycloC5 0.0001 0 0 0 0

Hexatriacontane 0 0 0 0 0

Chrysene 0 0 0 0 0

Cyclopentane 0 0 0 0 0

N-Pentadecane 0 0 0 0 0

N-Octadecane 0 0 0 0 0

Tetralin 0 0 0 0 0

Ethylbenzene 0 0 0 0 0

Benzene 0 0 0 0 0

N-Butane 0 0 0 0 0

Toluene 0 0 0 0 0

1-3-5-Mesitylene 0 0 0 0 0

P-Xylene 4.942 0 0 0 0

N-Propylbenzene 0 0 0 0 0
A.9

306

307

308

547

Hydrotreating

De-butanizer

Diesel Splitter

Naptha Splitter

Stable Oil

Product Splitter

Hydrogen From

H2 Plant

Fuel Gas to Reformers

Mogas Pool

Diesel Pool

Fuel Gas

To Reformer

302

524

515

305

304

309

500

532

540

508

544

Hydrogen

Recycle

To E-511

510

From

Hydrotreater 510

511

Steam

735

737

Condensate

227

CWS

1850

1851

CWR

Fuel Gas

To Heaters

523

526

601

602

536

531

529

Figure A.3. Flow Diagram for Hydrocracking and Product Separation 
A.10

Table A.3. Hydrocracking and Product Separation Heat and Material Balance 

Stream No. 227 302 304 305 306 307 308 309 310 500 508

Temp F 200 203.3611 457.477 308.4405 427.7641 470 734.4869 398.6693 398.8038 744.7188 366

Pres psig 35.3041 35.3041 35.3041 5 5 2 1 1 15 1300 1295

Enth MMBtu/h -30.008 -4.1857 -15.689 -12.8 -5.6145 -1.3824 5.6133 -10.415 -10.413 5.6658 5.651

Vapor mass fraction 0.000449 1 0 0 0 0.52048 0 0 0 0 0.20116

Total lb/h 69495.01 3466.51 66028.52 19360.17 46668.37 46668.38 8800.003 37868.36 37868.37 8800.005 11010

Flowrates in lb/h

Water 241.9986 241.9984 0 0 0 0 0 0 0 0 0

Hybrid Poplar Ch 0 0 0 0 0 0 0 0 0 0 0

Hydrogen 0.0113 0.0113 0 0 0 0 0 0 0 0 2129.363

Carbon Dioxide 13.8043 13.8043 0 0 0 0 0 0 0 0 0

Methane 0.0258 0.0258 0 0 0 0 0 0 0 0 0

Ethane 0.0331 0.0331 0 0 0 0 0 0 0 0 0

Propane 726.5612 726.5609 0 0 0 0 0 0 0 0 0

I-Butane 886.9562 886.956 0 0 0 0 0 0 0 0 0

2-5-Xylenol 7748.406 0.0001 7748.407 3162.434 4585.977 4585.977 0.0083 4585.968 4585.968 0.0083 0.0083

N-Heptane 3193.508 1596.752 1596.765 1596.766 0 0 0 0 0 0 0

1-ts-35-3C1CycC6 4857.689 0.0486 4857.643 4541.519 316.1233 316.1233 0.0016 316.1216 316.1216 0.0016 0.0016

3-3-5-TriMth-C7 1987.427 0.0002 1987.428 1856.982 130.4458 130.4458 0.0003 130.4456 130.4456 0.0003 0.0003

N-PropylCyc-C6 4878.839 0.0006 4878.839 3903.073 975.7652 975.7652 0.0087 975.7564 975.7565 0.0087 0.0087

1-2-3-Mesitylene 641.6508 0 641.6508 128.3304 513.3206 513.3206 0.0191 513.3015 513.3015 0.0191 0.0191

N-ButylCycHexane 233.9575 0 233.9575 125.987 107.9707 107.9707 0.0016 107.9691 107.9691 0.0016 0.0016

1-2-DiC1-3C2-Bz 1592.733 0 1592.733 135.2346 1457.499 1457.499 0.0871 1457.412 1457.412 0.0871 0.0871

Cis-Decalin 3184.483 0 3184.484 1024.104 2160.379 2160.379 0.0983 2160.281 2160.281 0.0983 0.0984

Dimethyl-C11 8633.395 0 8633.397 1406.676 7226.72 7226.72 0.0961 7226.625 7226.625 0.0961 0.0961

1-2-4-triethylbe 3186.105 0 3186.106 49.8727 3136.233 3136.233 0.2496 3135.983 3135.984 0.2496 0.2497

1-1-Bicyclohexyl 238.9565 0 238.9565 4.0338 234.9227 234.9227 0.035 234.8877 234.8877 0.035 0.035

Diphenyl 4383.133 0 4383.134 2.1702 4380.966 4380.966 6.4693 4374.497 4374.496 6.4693 6.4695

diamantane 8633.229 0 8633.231 174.8519 8458.38 8458.38 15.8027 8442.577 8442.577 15.8027 15.8052

Phenanthrene 6087.884 0 6087.887 0 6087.889 6087.889 2653.667 3434.22 3434.221 2653.668 2653.667

N-C15-CycloC5 291.442 0 291.442 0 291.4421 291.4421 3.1626 288.2794 288.2794 3.1626 3.1626

Chrysene 6120.283 0 6120.284 0 6120.288 6120.288 6120.288 0.0001 0.0001 6120.288 6120.286

1-Pentene 0 0 0 0 0 0 0 0 0 0 0

O-Xylene 0 0 0 0 0 0 0 0 0 0 0

Cyclopentane 0 0 0 0 0 0 0 0 0 0 0.0552

N-Pentadecane 0 0 0 0 0 0 0 0 0 0 0

N-Octadecane 0 0 0 0 0 0 0 0 0 0 0

Tetralin 0 0 0 0 0 0 0 0 0 0 0.0439

Ethylbenzene 0 0 0 0 0 0 0 0 0 0 0

Benzene 0 0 0 0 0 0 0 0 0 0 0

N-Butane 0 0 0 0 0 0 0 0 0 0 28.8114

Toluene 0 0 0 0 0 0 0 0 0 0 0

1-3-5-Mesitylene 0 0 0 0 0 0 0 0 0 0 0

P-Xylene 1732.494 0.3188 1732.176 1248.131 484.0454 484.0454 0.0088 484.0365 484.0366 0.0088 0.0088

N-Propylbenzene 0.0102 0 0.0102 0.0064 0.0038 0.0038 0 0.0038 0.0038 0 0

N-Butylbenzene 0 0 0 0 0 0 0 0 0 0 0

O-Ethyltoluene 0 0 0 0 0 0 0 0 0 0 0

C9H18 0 0 0 0 0 0 0 0 0 0 13.652

MthCyclohexane 0 0 0 0 0 0 0 0 0 0 38.0712
A.11

Table A.3. (contd) 

Stream No. 510 511 515 523 524 526 529 531 532 536 540

Temp F 1247.858 402.8347 110 110 118.5025 110 110 109.9931 77 95 109.9931

Pres psig 1275 1275 1255 1255 1300 1255 1255 1 300 1300 1

Enth MMBtu/h 5.6979 -4.3021 -7.9143 -0.09247 -0.06215 -0.01709 -7.8047 -0.00062 -0.15399 -0.08641 -7.8041

Vapor mass fraction 1 0.6392 0.11945 1 1 1 0 1 1 1 0

Total lb/h 11010.12 11010.12 11010.12 1110 1110 205.1373 9694.978 0.9811 1100 1100 9694

Flowrates in lb/h

Water 0 0 0 0 0 0 0 0 0 0 0

Hybrid Poplar Ch 0 0 0 0 0 0 0 0 0 0 0

Hydrogen 1219.721 1219.721 1219.77 1029.363 1029.363 190.2349 0.172 0.1702 1100 1100 0.0018

Carbon Dioxide 0 0 0 0 0 0 0 0 0 0 0

Methane 0 0 0 0 0 0 0 0 0 0 0

Ethane 0 0 0 0 0 0 0 0 0 0 0

Propane 0 0 0 0 0 0 0 0 0 0 0

I-Butane 0 0 0 0 0 0 0 0 0 0 0

2-5-Xylenol 0.0083 0.0083 0.0083 0.0001 0.0001 0 0.0083 0 0 0 0.0083

N-Heptane 0 0 0 0 0 0 0 0 0 0 0

1-ts-35-3C1CycC6 0.0016 0.0016 0.0016 0 0 0 0.0016 0 0 0 0.0016

3-3-5-TriMth-C7 0.0003 0.0003 0.0003 0 0 0 0.0003 0 0 0 0.0003

N-PropylCyc-C6 0.0087 0.0087 0.0087 0 0 0 0.0087 0 0 0 0.0087

1-2-3-Mesitylene 0.0191 0.0191 0.0191 0 0 0 0.0191 0 0 0 0.0191

N-ButylCycHexane 0.0016 0.0016 0.0016 0 0 0 0.0016 0 0 0 0.0016

1-2-DiC1-3C2-Bz 0.0871 0.0871 0.0871 0 0 0 0.0871 0 0 0 0.0871

Cis-Decalin 0.0984 0.0984 0.0984 0 0 0 0.0983 0 0 0 0.0983

Dimethyl-C11 0.0961 0.0961 0.0961 0 0 0 0.0961 0 0 0 0.0961

1-2-4-triethylbe 0.2497 0.2497 0.2497 0 0 0 0.2496 0 0 0 0.2496

1-1-Bicyclohexyl 0.035 0.035 0.035 0 0 0 0.035 0 0 0 0.035

Diphenyl 6.4695 6.4695 6.4695 0.0002 0.0002 0 6.4693 0 0 0 6.4693

diamantane 15.8052 15.8052 15.8052 0.0026 0.0026 0.0005 15.8022 0 0 0 15.8022

Phenanthrene 0 0 0 0 0 0 0 0 0 0 0

N-C15-CycloC5 0.0032 0.0032 0.0032 0 0 0 0.0032 0 0 0 0.0032

Chrysene 0 0 0 0 0 0 0 0 0 0 0

1-Pentene 0 0 0 0 0 0 0 0 0 0 0

O-Xylene 0 0 0 0 0 0 0 0 0 0 0

Cyclopentane 0.8451 0.8451 0.845 0.0552 0.0552 0.0102 0.7796 0.0006 0 0 0.779

N-Pentadecane 2.3923 2.3923 2.3923 0 0 0 2.3923 0 0 0 2.3923

N-Octadecane 0 0 0 0 0 0 0 0 0 0 0

Tetralin 196.8838 196.8838 196.8838 0.0439 0.0439 0.0081 196.8318 0.0004 0 0 196.8314

Ethylbenzene 0 0 0 0 0 0 0 0 0 0 0

Benzene 0 0 0 0 0 0 0 0 0 0 0

N-Butane 115.3507 115.3507 115.3013 28.8121 28.8121 5.3247 81.1645 0.2964 0 0 80.8681

Toluene 0 0 0 0 0 0 0 0 0 0 0

1-3-5-Mesitylene 0 0 0 0 0 0 0 0 0 0 0

P-Xylene 0.0088 0.0088 0.0088 0 0 0 0.0088 0 0 0 0.0088

N-Propylbenzene 0 0 0 0 0 0 0 0 0 0 0

N-Butylbenzene 0 0 0 0 0 0 0 0 0 0 0

O-Ethyltoluene 0 0 0 0 0 0 0 0 0 0 0

C9H18 6782.503 6782.503 6782.505 13.652 13.652 2.523 6766.33 0.1299 0 0 6766.2

MthCyclohexane 2669.528 2669.528 2669.527 38.0711 38.0711 7.0359 2624.419 0.3836 0 0 2624.036
A.12

Table A.3. (contd) 

Stream No. 544 547 601 602 735 737 1850 1851

Temp F 150 150 85.0536 85.0536 700.0002 496.55 90 105

Pres psig 1 15 35 35 645 645 45.3041 40.3041

Enth MMBtu/h -21.85 -15.53 -39.134 -10.149 -28.903 -33.135 -129.5 -129.21

Vapor mass fraction 0 0 0.98769 0.98769 1 1.00E-06 0 0

Total lb/h 28555.25 38367.25 15824.14 4103.631 5193.402 5193.402 19029.97 19029.96

Flowrates in lb/h

Water 0 0 249.8139 64.7836 5193.402 5193.402 19029.97 19029.96

Hybrid Poplar Ch 0 0 0 0 0 0 0 0

Hydrogen 0.0018 0 457.8133 118.7234 0 0 0 0

Carbon Dioxide 0 0 6947.662 1801.718 0 0 0 0

Methane 0 0 2656.017 688.7776 0 0 0 0

Ethane 0 0 1593.595 413.2626 0 0 0 0

Propane 0 0 1340.26 347.5659 0 0 0 0

I-Butane 0 0 1189.417 308.4483 0 0 0 0

2-5-Xylenol 3162.44 4585.968 1.8125 0.47 0 0 0 0

N-Heptane 1596.764 0 1332.604 345.5806 0 0 0 0

1-ts-35-3C1CycC6 4541.518 316.1217 27.7666 7.2006 0 0 0 0

3-3-5-TriMth-C7 1856.981 130.4455 5.7693 1.4961 0 0 0 0

N-PropylCyc-C6 3903.079 975.7582 10.933 2.8352 0 0 0 0

1-2-3-Mesitylene 128.3341 513.3166 0.2678 0.0695 0 0 0 0

N-ButylCycHexane 125.9872 107.9704 0.193 0.05 0 0 0 0

1-2-DiC1-3C2-Bz 135.2398 1457.493 0.3383 0.0877 0 0 0 0

Cis-Decalin 1024.112 2160.371 1.5088 0.3913 0 0 0 0

Dimethyl-C11 1406.674 7226.722 1.5272 0.3961 0 0 0 0

1-2-4-triethylbe 49.8727 3136.233 0.253 0.0656 0 0 0 0

1-1-Bicyclohexyl 4.0338 234.9227 0.0204 0.0053 0 0 0 0

Diphenyl 2.1701 4380.964 0.0869 0.0225 0 0 0 0

diamantane 174.8532 8458.38 1.6581 0.43 0 0 0 0

Phenanthrene 0 3434.22 0.0042 0.0011 0 0 0 0

N-C15-CycloC5 0 288.2826 0.0001 0 0 0 0 0

Chrysene 0 0.0001 0 0 0 0 0 0

1-Pentene 0 0 0 0 0 0 0 0

O-Xylene 0 0 0 0 0 0 0 0

Cyclopentane 0.779 0 0.0005 0.0001 0 0 0 0

N-Pentadecane 0 2.3923 0 0 0 0 0 0

N-Octadecane 0 0 0 0 0 0 0 0

Tetralin 4.8831 191.9483 0.0003 0.0001 0 0 0 0

Ethylbenzene 0 0 0 0 0 0 0 0

Benzene 0 0 0 0 0 0 0 0

N-Butane 80.868 0 0.2354 0.061 0 0 0 0

Toluene 0 0 0 0 0 0 0 0

1-3-5-Mesitylene 0 0 0 0 0 0 0 0

P-Xylene 1248.139 484.0367 4.1775 1.0833 0 0 0 0

N-Propylbenzene 0.0064 0.0038 0 0 0 0 0 0

N-Butylbenzene 0 0 0 0 0 0 0 0

O-Ethyltoluene 0 0 0 0 0 0 0 0

C9H18 6484.484 281.7122 0.1032 0.0268 0 0 0 0

MthCyclohexane 2624.033 0 0.3046 0.079 0 0 0 0

 
A.13

BFW

To V-710

Steam

Drum

725

Export Steam

From V-710

Steam Drum

734

Natural Gas

HP

Hydrogen

LP Offgas

601

PSA Offgas

To V-710

Steam

Drum

To

V-710

Steam

Drum

BFW

H2 to

Hydro

Condensate

Collection

Exhaust

630

743

754

514

520

610

603

609

615

730

505

501 500

526

605

604

503

Hydro

desulfurization

High Temperature

Shift

Air

PSA

507

508

509

706

512

513

721

KO

Drum

Steam

Reformer

To E-311

To E-226

615

502

612

735

736

733

Figure A.4. Flow Diagram for Hydrogen Generation by Steam Reforming 
A.14

Table A.4. Hydrogen Generation by Steam Reforming Heat and Material Balance 

Stream No. 250 532 500 501 502 503 505 507 508 509 512

Temp F 77 77 60 61.8717 700 700 1050 1562 549.1881 667.5483 150

Pres psig 300 300 400 400 399.5 399.5 389.5 359.5 354.5 344.5 329.5

Enth MMBtu/h -0.90996 -0.15399 -34.902 -34.892 -26.96 -26.96 -498.35 -367.68 -440.7 -440.7 -526.32

Vapor mass fraction 1 1 1 1 1 1 1 1 1 1 0.53835

Total lb/h 6500 1100 17196.06 17401.2 17401.2 17401.2 110098.3 110098.4 110098.4 110098.8 110098.8

Flowrates in lb/h

Water 0 0 0 0 0 0 88044.1 60993.9 60993.9 51908.3 51908.3

Hydrogen 6500.0 1100.0 0.0 190.2 190.2 190.2 327.6 7450.3 7450.3 8466.9 8466.9

Carbon 0 0 0 0 0 0 0 0 0 0 0

Carbon Monoxide 0 0 0 0 0 0 0 17026.3 17026.3 2899.8 2899.8

Carbon Dioxide 0 0 0 0 0 0 2084.2 21749.5 21749.5 43945.3 43945.3

Methane 0 0 17196.1 17196.1 17196.1 17196.1 17992.9 2878.1 2878.1 2878.1 2878.1

Ethylene 0 0 0 0 0 0 0 0 0 0 0

Ethane 0 0 0 0 0 0 478.0 0.1 0.1 0.1 0.1

Propylene 0 0 0 0 0 0 0 0 0 0 0

Propane 0 0 0 0 0 0 401.9 0 0 0 0

I-Butane 0 0 0 0 0 0 356.5 0 0 0 0

Formaldehyde 0 0 0 0 0 0 0 0.2 0.2 0.2 0.2

2-5-Xylenol 0 0 0 0 0 0 0.1 0 0 0 0

N-Heptane 0 0 0 0 0 0 385.5 0 0 0 0

1-ts-35-3C1CycC6 0 0 0 0 0 0 6.9 0 0 0 0

3-3-5-TriMth-C7 0 0 0 0 0 0 1.3 0 0 0 0

N-PropylCyc-C6 0 0 0 0 0 0 2.6 0 0 0 0

1-2-3-Mesitylene 0 0 0 0 0 0 0 0 0 0 0

N-ButylCycHexane 0 0 0 0 0 0 0 0 0 0 0

1-2-DiC1-3C2-Bz 0 0 0 0 0 0 0 0 0 0 0

Cis-Decalin 0 0 0 0 0 0 0.2 0 0 0 0

Dimethyl-C11 0 0 0 0 0 0 0.1 0 0 0 0

1-2-4-triethylbe 0 0 0 0 0 0 0 0 0 0 0

1-1-Bicyclohexyl 0 0 0 0 0 0 0 0 0 0 0

Diphenyl 0 0 0 0 0 0 0 0 0 0 0

diamantane 0 0 0 0 0 0 0.1 0 0 0 0

Phenanthrene 0 0 0 0 0 0 0 0 0 0 0

N-C15-CycloC5 0 0 0 0 0 0 0 0 0 0 0

Cyclopentane 0 0 0 0 0 0 0 0 0 0 0

N-Pentadecane 0 0 0 0 0 0 0 0 0 0 0

N-Octadecane 0 0 0 0 0 0 0 0 0 0 0

Tetralin 0 0 0 0 0 0 0 0 0 0 0

Ethylbenzene 0 0 0 0 0 0 0 0 0 0 0

Benzene 0 0 0 0 0 0 0 0 0 0 0

N-Butane 0 0 0 5.3 5.3 5.3 5.4 0 0 0 0

Toluene 0 0 0 0 0 0 0 0 0 0 0

1-3-5-Mesitylene 0 0 0 0 0 0 0 0 0 0 0

P-Xylene 0 0 0 0 0 0 1.1 0 0 0 0

C9H18 0 0 0 2.5 2.5 2.5 2.5 0 0 0 0

MthCyclohexane 0 0 0 7.0 7.0 7.0 7.1 0 0 0 0
A.15

Table A.4. (contd) 

Stream No. 513 514 520 526 601 603 604 605 609 610 612

Temp F 150 150 150 110 85.0536 85.0536 85.0536 85.0536 256.2011 60 550

Pres psig 329.5 329.5 329.5 1255 35 35 35 35 400 0.001 2

Enth MMBtu/h -183.1 -343.22 1.9013 0.009921 -39.131 -38.37 -0.76068 -26.859 -11.172 -0.97388 26.657

Vapor mass fraction 1 0 1 1 0.98944 1 0 1 1 1 1

Total lb/h 59271.69 50827.07 7620.208 205.1373 15824.14 15657.06 167.0814 10959.94 4697.12 230000 230000

Flowrates in lb/h

Water 1081.2 50827.1 0 0 249.8 147.0 102.8 102.9 44.1 0 0

Hydrogen 8466.9 0 7620.2 190.2 457.8 457.8 0.0 320.5 137.3 0 0

Carbon 0.0 0 0 0 0 0 0 0 0 0 0

Carbon Monoxide 2899.8 0 0 0 0 0 0 0 0 0 0

Carbon Dioxide 43945.3 0 0 0 6947.7 6947.3 0.4 4863.1 2084.2 0 0

Methane 2878.1 0 0 0 2656.0 2656.0 0.0 1859.2 796.8 0 0

Ethylene 0 0 0 0 0 0 0 0 0 0 0

Ethane 0.1 0 0 0 1593.6 1593.4 0.1 1115.4 478.0 0 0

Propylene 0 0 0 0 0 0 0 0 0 0 0

Propane 0 0 0 0 1340.3 1339.8 0.4 937.9 401.9 0 0

I-Butane 0 0 0 0 1189.4 1188.5 1.0 831.9 356.5 0 0

Formaldehyde 0.2 0 0 0 0 0 0 0 0 0 0

2-5-Xylenol 0.0 0 0 0 1.8 0.4 1.4 0.3 0.1 0 0

N-Heptane 0 0 0 0 1332.6 1285.0 47.6 899.5 385.5 0 0

1-ts-35-3C1CycC6 0 0 0 0 27.8 23.1 4.7 16.1 6.9 0 0

3-3-5-TriMth-C7 0 0 0 0 5.8 4.3 1.5 3.0 1.3 0 0

N-PropylCyc-C6 0 0 0 0 10.9 8.7 2.3 6.1 2.6 0 0

1-2-3-Mesitylene 0 0 0 0 0.3 0.2 0.1 0.1 0 0 0

N-ButylCycHexane 0 0 0 0 0.2 0.1 0.1 0.1 0 0 0

1-2-DiC1-3C2-Bz 0 0 0 0 0.3 0.1 0.2 0.1 0 0 0

Cis-Decalin 0 0 0 0 1.5 0.7 0.8 0.5 0.2 0 0

Dimethyl-C11 0 0 0 0 1.5 0.2 1.3 0.1 0.1 0 0

1-2-4-triethylbe 0 0 0 0 0.3 0 0.2 0 0 0 0

1-1-Bicyclohexyl 0 0 0 0 0.0 0 0 0 0 0 0

Diphenyl 0 0 0 0 0.1 0 0.1 0 0 0 0

diamantane 0 0 0 0 1.7 0.3 1.4 0.2 0.1 0 0

Phenanthrene 0 0 0 0 0 0 0 0 0 0 0

N-C15-CycloC5 0 0 0 0 0 0 0 0 0 0 0

Cyclopentane 0 0 0 0 0 0 0 0 0 0 0

N-Pentadecane 0 0 0 0 0 0 0 0 0 0 0

N-Octadecane 0 0 0 0 0 0 0 0 0 0 0

Tetralin 0 0 0 0 0 0 0 0 0 0 0

Ethylbenzene 0 0 0 0 0 0 0 0 0 0 0

Benzene 0 0 0 0 0 0 0 0 0 0 0

N-Butane 0 0 0 5.3 0.2 0.2 0.0 0.2 0.1 0 0

Toluene 0 0 0 0 0 0 0 0 0 0 0

1-3-5-Mesitylene 0 0 0 0 0 0 0 0 0 0 0

P-Xylene 0 0 0 0 4.2 3.6 0.6 2.5 1.1 0 0

C9H18 0 0 0 2.5 0.1 0.1 0 0.1 0 0 0

MthCyclohexane 0 0 0 7.0 0.3 0.3 0 0.2 0.1 0 0
A.16

Table A.4. (contd)

Stream No. 615 630 706 707 721 725 730 733 734 735 736

Temp F 150 311.6723 276.468 276.468 497.3775 497.3795 497.3795 700.0002 700 700 700

Pres psig 329.5 1.5 670 670 650 650 650 645 645 645 645

Enth MMBtu/h -185.86 -447.3 -1133.3 -0.00703 -1371.1 -1316.6 -675.88 -121.47 -486.09 -28.903 -22.468

Vapor mass fraction 0.98557 1 0 0 0 0.355 1 1 1 1 1

Total lb/h 51651.48 292778.2 171067 1.0604 214800.3 214800 119221.6 21991.57 88000 5193 4037

Flowrates in lb/h

Water 1081.2 28603.1 171067.0 1.1 214800.3 214800.0 119221.6 21991.6 88000 5193.0 4037.0

Hydrogen 846.7 0 0 0 0 0 0 0 0 0 0

Carbon 0 0 0 0 0 0 0 0 0 0 0

Carbon Monoxide 2899.8 0 0 0 0 0 0 0 0 0 0

Carbon Dioxide 43945.3 78010.5 0 0 0 0 0 0 0 0 0

Methane 2878.1 0 0 0 0 0 0 0 0 0 0

Ethylene 0 0 0 0 0 0 0 0 0 0 0

Ethane 0.1 0 0 0 0 0 0 0 0 0 0

Propylene 0 0 0 0 0 0 0 0 0 0 0

Propane 0 0 0 0 0 0 0 0 0 0 0

I-Butane 0 0 0 0 0 0 0 0 0 0 0

Formaldehyde 0 0 0 0 0 0 0 0 0 0 0

2-5-Xylenol 0 0 0 0 0 0 0 0 0 0 0

N-Heptane 0 0 0 0 0 0 0 0 0 0 0

1-ts-35-3C1CycC6 0 0 0 0 0 0 0 0 0 0 0

3-3-5-TriMth-C7 0 0 0 0 0 0 0 0 0 0 0

N-PropylCyc-C6 0 0 0 0 0 0 0 0 0 0 0

1-2-3-Mesitylene 0 0 0 0 0 0 0 0 0 0 0

N-ButylCycHexane 0 0 0 0 0 0 0 0 0 0 0

1-2-DiC1-3C2-Bz 0 0 0 0 0 0 0 0 0 0 0

Cis-Decalin 0 0 0 0 0 0 0 0 0 0 0

Dimethyl-C11 0 0 0 0 0 0 0 0 0 0 0

1-2-4-triethylbe 0 0 0 0 0 0 0 0 0 0 0

1-1-Bicyclohexyl 0 0 0 0 0 0 0 0 0 0 0

Diphenyl 0 0 0 0 0 0 0 0 0 0 0

diamantane 0 0 0 0 0 0 0 0 0 0 0

Phenanthrene 0 0 0 0 0 0 0 0 0 0 0

N-C15-CycloC5 0 0 0 0 0 0 0 0 0 0 0

Cyclopentane 0 0 0 0 0 0 0 0 0 0 0

N-Pentadecane 0 0 0 0 0 0 0 0 0 0 0

N-Octadecane 0 0 0 0 0 0 0 0 0 0 0

Tetralin 0 0 0 0 0 0 0 0 0 0 0

Ethylbenzene 0 0 0 0 0 0 0 0 0 0 0

Benzene 0 0 0 0 0 0 0 0 0 0 0

N-Butane 0 0 0 0 0 0 0 0 0 0 0

Toluene 0 0 0 0 0 0 0 0 0 0 0

1-3-5-Mesitylene 0 0 0 0 0 0 0 0 0 0 0

P-Xylene 0 0 0 0 0 0 0 0 0 0 0

C9H18 0 0 0 0 0 0 0 0 0 0 0

MthCyclohexane 0 0 0 0 0 0 0 0 0 0 0
A.17

Table A.4. (contd) 

Stream No. 743 754

Temp F 499.8419 400

Pres psig 665 665

Enth MMBtu/h -501.74 -536.23

Vapor mass fraction 1 0

Total lb/h 88500 82567.1

Flowrates in lb/h

Water 88500.0 82567.1

Hydrogen 0 0

Carbon 0 0

Carbon Monoxide 0 0

Carbon Dioxide 0 0

Methane 0 0

Ethylene 0 0

Ethane 0 0

Propylene 0 0

Propane 0 0

I-Butane 0 0

Formaldehyde 0 0

2-5-Xylenol 0 0

N-Heptane 0 0

1-ts-35-3C1CycC6 0 0

3-3-5-TriMth-C7 0 0

N-PropylCyc-C6 0 0

1-2-3-Mesitylene 0 0

N-ButylCycHexane 0 0

1-2-DiC1-3C2-Bz 0 0

Cis-Decalin 0 0

Dimethyl-C11 0 0

1-2-4-triethylbe 0 0

1-1-Bicyclohexyl 0 0

Diphenyl 0 0

diamantane 0 0

Phenanthrene 0 0

N-C15-CycloC5 0 0

Cyclopentane 0 0

N-Pentadecane 0 0

N-Octadecane 0 0

Tetralin 0 0

Ethylbenzene 0 0

Benzene 0 0

N-Butane 0 0

Toluene 0 0

1-3-5-Mesitylene 0 0

P-Xylene 0 0

C9H18 0 0

MthCyclohexane 0 0
A.18

From E-515 Syngas Cooler

From E-523 Syngas Cooler

Generator

790

Blow Down 720

Boiler Feed

Water

To T-305 Reboiler

To T-540 Reboiler

To Reformer Exhaust Boiler

To Reformer Exhaust Superh

To Deareator

760

762

730

781

743

754

725

707

721

To T-310 Reboiler 765

Figure A.5. Flow Diagram for the Steam Reformer Steam Drum 
A.19

Table A.5. Steam Reformer Steam Drum Heat and Material Balance 

Stream No. 707 720 721 725 730 743

Temp F 276.5 497.4 497.4 497.4 497.4 499.8

Pres psig 670 650 650 650 650 665

Enth MMBtu/h -0.007 -1371.1 -1371.1 -1316.6 -675.88 -501.74

Vapor mass 

fraction 0 0 0 0.355 1 1

Total lb/h 1.1 214799.2 214800.3 214800.0 119221.6 88500.0

Flowrates in lb/h

Water 1.1 214799.2 214800.3 214800.0 119221.6 88500.0

Stream No. 754 760 762 765 781 790

Temp F 400.0 497.4 497.4 497.4 497.4 497.4

Pres psig 665 650 650 650 650 650

Enth MMBtu/h -536.23 -91.839 -21.543 -23.81 -47.62 -122.87

Vapor mass 

fraction 0 1 1 1 1 0

Total lb/h 82567.1 16200.0 3800.0 4200.0 8400.0 19250.0

Flowrates in lb/h

Water 82567.1 16200.0 3800.0 4200.0 8400.0 19250.0
A.20

From T-305

Reboiler Condensate

Vent

From T-540

Reboiler Condensate

BFW Makeup

To Waste Heat Boile

BFW To E-523 Syng

Steam from

Steam Drum

Condensate from

T310 Reboiler

Syngas Condensate

Condensate from E-311

Condensate from E-226

781

737

738

766

761

763

700

514

707

706

768

Superheated Steam

Condensate

Figure A.6. Flow Diagram for Condensate Collection 
A.21

Table A.6. Condensate Collection Heat and Material Balance 

Stream No. 514 700 706 707 737 738

Temp F 150.0 60.0 276.5 276.5 496.6 496.6

Pres psig 329.5 20 670 670 645 645

Enth MMBtu/h -343.22 -386.06 -1133.3 -0.0070253 -33.135 -25.758

Vapor mass 

fraction 0 0 0 0 1.00E-06 1.00E-06

Total lb/h 50827.1 56419.0 171067.0 1.1 5193.4 4037.1

Flowrates in lb/h

Water 50827.1 56419.0 171067.0 1.1 5193.4 4037.1

Stream No. 761 763 766 768 781

Temp F 495.6 497.4 496.6 366.0 497.4

Pres psig 645 650 645 150 650

Enth MMBtu/h -103.44 -24.193 -26.71 -143.64 -47.62

Vapor mass 

fraction 0 0.023151 0.034147 0 1

Total lb/h 16200.0 3800.0 4200.0 21992.0 8400.0

Flowrates in lb/h

Water 16200.0 3800.0 4200.0 21992.0 8400.0

Appendix B 

Equipment Cost Details

B.1

Appendix B 

Equipment Cost Details 

Table B.1 lists the equipment cost details. Table B.2 lists the specifications for the standard equipment.
B.2

Table B.1. Equipment Capital Cost Detail 

# 

Reqd Equipment Name

Original 

Stream 

Metric

New 

Stream 

Metric

Scaling 

Units

Size 

Ratio

Original 

Equip Cost 

(per unit) Base Year

Scaling 

Exp

Install 

Factor

Scaled and 

Installed Cost 

in Base Year

A100 Pyrolysis Oil

1 Feedstock Handling 500 2,000 tpd 4.00 $5,570,000 2003 0.7 2.47 14,699,318 

1 CFB Pyrolyzer 500 2,000 tpd 4.00 $3,392,000 2003 0.7 2.47 8,951,542 

1 Quench 500 2,000 tpd 4.00 $1,940,000 2003 0.7 2.47 5,119,691 

1 Heat recovery 500 0 tpd 0.00 $1,140,000 2003 0.7 2.47 0 

1 Product recovery and storage 500 2,000 tpd 4.00 $800,000 2003 0.7 2.47 2,111,213 

1 Recycle 500 2,000 tpd 4.00 $1,380,000 2003 0.7 2.47 3,641,842 

1 Steam and Power production 500 0 tpd 0.00 $3,160,000 2003 0.7 2.47 0 

1 Utilities 500 0 tpd 0.00 $3,130,000 2003 0.7 2.47 0 

$34,523,605 

Equipment Contingency 35% 

Cost sources 1) Ringer et al. 2006

A 200 Pyrolysis Oil Upgrading

2 Feed Booster Pump 1,000 2,000 tpd 2.00 $30,000 2004 0.65 2.47 232,551 

2 Feed Pump 1,000 2,000 tpd 2.00 $122,000 2004 0.65 2.47 945,706 

1 1

st 

stage Reactor 2,038 1,959 liq scfh 0.96 $860,700 1Q 2007 0.65 2.47 2,125,929 

1 2

nd

stage Reactor 2,038 1,959 liq scfh 0.96 $9,018,000 1Q 2007 0.65 2.47 19,852,131 

1

2

nd

stage Three Phase 

Separator

174,497 161,375 lb/h 0.92 $673,300 1Q 2005 0.65 2.47 1,663,113 

1

1

st 

Feed/Product Heat 

Exchanger

59.85 38.38 mmbtuh 0.64 $647,800 1Q 2005 0.65 2.47 1,628,026 

1

2

nd

Feed/Product Heat 

Exchanger

33.30 1.22 mmbtuh 0.04 $622,200 1Q 2005 0.65 2.47 1,537,134 

1 Fired Heater 8.35 40.00 mmbtuh 8.18 $378,000 2004 0.65 2.47 933,660 

1 Air Cooler 40.38 28.10 mmbtuh 0.70 $228,000 1Q 2005 0.65 2.47 548,093 

1 Product Trim Cooler 8.35 8.35 mmbtuh 1.00 $128,700 1Q 2005 0.65 2.47 317,889 

1 PSA 10 15

mmscfd 

H2

1.50 $1,750,000 2004 0.65 2.47 4,838,004 

1 Product Flash Drum 71,462 69,520 lb/h 0.97 $38,800 1Q 2005 0.65 2.47 95,836 

1 Product Pump 1,000 2,000 tpd 2.00 $39,000 2004 0.65 2.47 151,158 

1 Hydrogen Compressor 2,840 2,840 acfm 1.00 $3,869,400 1Q 2005 0.65 2.47 9,557,418 

Subtotal $43,497,310 

Equipment Contingency 15% 

Cost sources 2) Vendor quote, 2004; 3) Aspen Icarus
B.3

Table B.1. (contd) 

# 

Reqd Equipment Name

Original 

Stream 

Metric

New 

Stream 

Metric

Scaling 

units

Size 

Ratio

Original 

Equip Cost 

(per unit) Base Year

Scaling 

Exp

Install 

Factor

Scaled and 

Installed Cost 

in Base Year

A300/500 Hydrocracking and 

Separations

1 T-305 Debutanizer 69,495 69,495 lb/h 1.00 $55,100 1Q 2007 0.65 2.47 217,113 

1 T-310 Naphtha Splitter 70,500 66,028 lb/h 0.94 $183,700 1Q 2005 0.65 2.47 434,817 

1 T-315 Diesel Splitter 45,548 46,668 lb/h 1.02 $65,500 1Q 2005 0.65 2.47 164,360 

1 T-540 9,680 9,694 lb/h 1.00 $123,800 1Q 2005 0.65 2.47 306,073 

1 T-305 Debutanizer Reboiler 11.60 11.60 mmbtuh 1.00 $48,600 1Q 2007 0.65 2.47 120,042 

1 T-310 Reboiler 2.90 2.90 mmbtuh 1.00 $27,200 1Q 2007 0.65 2.47 67,184 

1 T-315 Reboiler 4.77 10.20 mmbtuh 2.14 $24,900 1Q 2005 0.65 2.47 100,797 

1 T-540 Reboiler 2.63 2.63 mmbtuh 1.00 $22,400 1Q 2007 0.65 2.47 55,328 

1 T-305 Debutanizer Condenser 1.48 1.48 mmbtuh 1.00 $33,200 1Q 2007 0.65 2.47 82,004 

1 T-310 Condenser 5.62 5.62 mmbtuh 1.00 $43,200 1Q 2007 0.65 2.47 106,704 

1 T-315 Condenser 13.40 13.40 mmbtuh 1.00 $55,800 1Q 2007 0.65 2.47 137,826 

1 T-540 Condenser 2.65 2.65 mmbtuh 1.00 $79,300 1Q 2007 0.65 2.47 195,871 

1 T-305 Reflux Drum 3655 3466 lb/h 0.95 $7,000 1Q 2005 0.65 2.47 16,703 

1 T-310 Reflux Drum 55 49 gpm 0.88 $17,500 1Q 2005 0.65 2.47 39,832 

1 T-315 Reflux Drum 82 89 gpm 1.08 $16,500 1Q 2005 0.65 2.47 42,890 

1 T-540 Reflux Drum 24 23 gpm 0.96 $11,500 1Q 2005 0.65 2.47 27,630 

1 Debutanizer Feed Preheater 6.66 3.29 mmbtuh 0.49 $29,000 1Q 2005 0.65 2.47 45,291 

1 T315 Feed Preheater 6.66 4.23 mmbtuh 0.64 $29,000 1Q 2005 0.65 2.47 53,328 

1 Hydrocracker Unit : 2,250 590 bpd fd 0.26 $30,000,000 1Q 2005 0.65 2.47 12,567,718 

 H508 Fired heater Included in hydrocracker unit cost

 R510 Hydrocracker Vessel Included in hydrocracker unit cost

 E513 Feed/product exchanger Included in hydrocracker unit cost

 E516 air cooler Included in hydrocracker unit cost

 E517 trim cooler Included in hydrocracker unit cost

 V520 HP flash Included in hydrocracker unit cost

 V530 LP flash Included in hydrocracker unit cost

1 Naphtha Product Cooler 1.4 1.45 mmbtuh 1.04 $46,300 1Q 2005 0.65 2.47 116,999 

1 Diesel Product Cooler 3.1 4.93 mmbtuh 1.59 $44,600 1Q 2005 0.65 2.47 148,935 

Subtotal 

15% 

Cost sources 3) Aspen Icarus; 4) Marker et al. 2005
B.4

Table B.1. (contd) 

# 

Reqd Equipment Name

Original 

Stream 

Metric

New 

Stream 

Metric

Scaling 

units

Size 

Ratio

Original 

Equip Cost 

(per unit)

Base 

Year

Scaling 

Exp

Install 

Factor

Scaled and 

Installed Cost 

in Base Year

A 700 Utilities and Auxiliaries

1 Wastewater treatment incinerator 1,000 0 tpd 0.00 $442,000 2004 1,000 2.47 0 

1 WWT anaerobic/aerobic digestion 1,000 2,000 tpd 2.00 $1,554,000 2004 1,000 2.47 2,438,487 

1 Wastewater storage 593,849 672,840 gallons 1.13 226,710 1Q 2005 593,849 607,324 

1 Field-Erected CTW w/pumps, etc 10,400 7,549 gpm 0.73 $352,000 1Q 2005 0.78 2.47 274,164 

1 Plant Air Compressor 2,000 2,000 tpd 1.00 $32,376 2002 0.34 2.47 79,969 

1 Hydraulic Truck Dump with Scale 2,000 2,000 tpd 1.00 $80,000 1998 0.6 2.47 197,600 

1 Firewater Pump 2,000 2,000 tpd 1.00 $18,400 1997 0.79 2.47 45,448 

1 Diesel Pump 2,000 2,000 tpd 1.00 $6,100 1997 0.79 2.47 15,067 

1 Instrument Air Dryer 2,000 2,000 tpd 1.00 $8,349 2002 0.6 2.47 20,622 

1 Plant Air Receiver 2,000 2,000 tpd 1.00 $7,003 2002 0.72 2.47 17,297 

1 Firewater Storage Tank 2,000 2,000 tpd 1.00 $166,100 1997 0.51 2.47 410,267 

1 Ammonia Pump included in Stream Reformer Cost

1 Hydrazine Pump included in Stream Reformer Cost

1 Ammonia Storage Tank included in Stream Reformer Cost

1 Hydrazine Storage Tank included in Stream Reformer Cost

1 Flare included in Stream Reformer Cost

1 Feed Storage 1,056,846 1,056,846 gallons 1.00 470,000 1Q 2005 0.65 2.47 1,160,900 

1 Product Storage 558,000 681,114 gallons 1.22 320,384 1Q 2005 0.65 2.47 836,744 

1 Product Storage 558,000 712,728 gallons 1.28 320,384 1Q 2005 0.65 2.47 930,580 

Subtotal 

Equipment Contingency 15% 

Cost sources 3) Aspen Icarus; 5) Beckman et al. 1990; 6) Phillips et al. 2007
B.5

Table B.1. (contd) 

# 

Reqd Equipment Name

Original 

Stream 

Metric

New 

Stream 

Metric

Scaling 

units

Size 

Ratio

Original 

Equip Cost 

(per unit)

Base 

Year

Scaling 

Exp

Install 

Factor

Scaled and 

Installed Cost 

in Base Year

A 600 Hydrogen Plant

1 Steam Reformer System w/ 24.5 34.4

mmscfd 

H2

1.40 $69,900,000 

May 

2007

0.65 2.47 87,152,973 

 associated OSBL

Subtotal 87,152,973 

Equipment Contingency 0% 0 

87,152,973 

Cost sources 7) SRI 2007
B.6

Table B.2. Standard Equipment Specifications 

Tag Description T, °F P, psig Type and Size 

R-205 1

st

stage Reactor 750 2530 Diameter, ft

Length, ft

8

41

R-215 2

nd

stage Reactor 780 2530 Diameter, ft

Length, ft

16

80

V-222 Three-Phase Separator 100 700 Diameter, ft

Length, ft

10

58

E-202 1

st

Feed/Product Heat 

Exchanger 

750 2530 Shell & tube 

floating head

Area, ft

2

Duty, MMBtu/h

6712

59.9

E-206 2

nd

Feed/Product Heat 

Exchanger

750 2530 Shell & tube 

floating head

Area, ft2

Duty, MMBtu/h

6518

33.3

H-210 Fired Heater 850 2530 Duty, MMBtu/h 8.18 

E-220 Air Cooler 400 750 Air Fin Area, ft2

Duty, MMBtu/h

6170

40.4

E-221 Product Trim Cooler 150 700 Shell & tube 

floating head

Area, ft2

Duty, MMBtu/h

3589

8.35

V-225 Product Flash Drum 100 100 Diameter, ft

Length, ft

7

21

C-250 Hydrogen Compressor 300 inlet Reciprocating

motor drive

3 stage 2480 acfm

T-305 Debutanizer 50 440 Diameter, ft

# trays

5

18

T-310 Naphtha Splitter 50 500 Diameter, ft

# trays

3

28

T-315 Diesel Splitter 50 700 Diameter, ft

# trays

5

8

T-540 T-540 50 400 Diameter, ft

# trays

3

28

T-305 Debutanizer Reboiler 150 750 Shell & tube 

floating head

Area, ft

2

Duty, MMBtu/h

975

11.6

E-310R Reboiler 150 700 Shell & tube 

floating head

Area, ft

2

Duty, MMBtu/h

224

2.9

E-315R Reboiler 150 500 Shell & tube 

floating head

Area, ft

2

Duty, MMBtu/h

218

4.7

E-540R Reboiler 150 880 Shell & tube 

floating head

Area, ft

2

Duty, MMBtu/h

127

2.63
B.7

Table B.2. (contd) 

E-305C Debutanizer Condenser 150 200 Air Fin Area, ft2

Duty, MMBtu/h

209

1.5

E-310C Naphtha Splitter Condenser 150 200 Air Fin Area, ft2

Duty, MMBtu/h

503

5.6

E-315C Diesel Splitter Condenser 150 300 Air Fin Area, ft2

Duty, MMBtu/h

670

13.4

E-540C T-540 Condenser 150 400 Air Fin Area, ft2

Duty, MMBtu/h

1680

2.7

D-305 Debutanizer Reflux Drum 15 250 Horizontal, 5

min holdup

Diameter, ft

Length, ft

2

6

D-310 Naphtha Splitter Reflux Drum 15 350 Horizontal, 5

min holdup

Diameter, ft

Length, ft

4.8

14.3

D-315 Diesel Splitter Reflux Drum 15 425 Horizontal, 5

min holdup

Diameter, ft

Length, ft

4.5

13.5

D-540 T-540 Reflux Drum 15 250 Horizontal, 5

min holdup

Diameter, ft

Length, ft

3.4

10.3

E-305 Debutanizer Feed Preheater 150 530 Pre-engineered Area, ft

2

Duty, MMBtu/h

83

3.33

E-311 Diesel Splitter Feed Preheater 150 Shell & tube 

floating head

Area, ft2

Duty, MMBtu/h

574

3.55

E-542 Naphtha Product Cooler 50 475 Air Fin Area, ft

2

Duty, MMBtu/h

838 

E-543 Diesel Product Cooler 50 475 Air Fin Area, ft

2

Duty, MMBtu/h

670

3.1


y 

Pacific Northwest 

NATIONAL LABORATORY 

902 Battelle Boulevard 

P.O. Box 999 

Richland, WA 99352 

1-888-375-PNNL (7665) 

www.pnl.gov 

U.S. DEPARTMENT OF 

ENERGY