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OAR Box 1865 

Prepped by Charmelle Mathews 

Document Number: 

139) VI-B-4 

Docket Number: 

A-83-27 

Printed 12/3/2008 3:22:20 PM Sheet 139 of 198 
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RADIAN A-83-2 VI-B-4 7 

MEMORANDU M 

TO: Industrial Boiler S02 Docket 

FROM: J. Thomas Waddell, Radian Corporation 

DATE: October 14, 1988 

SUBJECT: Summary of Test Data Presented at the 1987 International 

Conference on Fluidized Bed Combustion 

This memorandum summarizes the sulfur dioxide (S02) removal performance data 

presented at the 1987 International Conference on Fluidized Bed Combustion 

held in Boston, Massachusetts, May 3-7, 1987. Specifically, this summary 

focuses on data from atmospheric fluidized bed combustion (AFBC) units 

exhibiting S02 retention performances of 90 percent or greater. 

Table 1 presents data for two bubbling bed and three circulating bed units. 

The bubbling bed units have heat input capacities of 16 and 20 MW (55 and 68 

million Btu/hr). These units (both coal-fired) operated at calcium-tosulfur (Ca/S) ratios of 5.5 and 2.9 and reduced S0« emissions by 91 and 92 

percent, respectively. 

The circulating bed systems range in capacity from 1.5 to 40 MW (5.1 to 137 

million Btu/hr). As shown in Table 1, a wide variety of fuels were fired in 

these units, ranging in sulfur content from 0.3 to 6.6 weight percent. 

Tests were conducted at Ca/S ratios ranging from 1.5 to 3.0. Sulfur dioxide 

emissions ranged from 0.03 to 0.98 lb/million Btu; S02 removal efficiencies 

ranged from 90 to 99 percent. 

The test results were consistent between the pilot scale and institutional 

AFBC units, demonstrating that 90 percent or greater S02 removal is 

achievable with AFBC technology. 

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TABLE 1. SUMMARY OF ATMOSPHERIC FLUIDIZED BED COMBUSTION TEST DATA 

O 

t/l 

ro 

Location 

Finland 

TVA, Paducah, Ky 

Manufacturer Capacity Classification Bed Type Fuel Type 

<nw> : 

Fuel Sulfur Ca/S Ratio SO Emissions SO Removal Paper 

2 6 2 

Content (wt.Xj 

Ahlstrom/Pyropower 1.5 Pilot 

Babcock & Wilcox 

Frankfurt, Germany Lurgi 

b 

Chalmers Univ., Sweden NS 

NyKoplng, Sweden Cotaverken 

20 

16 

40 

Pilot 

Circulating Dlatomlte 

Ohio #6 coal 

Delayed pet. coke 

Snycrude fluid coke 

Bubbling Ky. #9 Coal 

1.5 Pilot Circulating Anthracite Culm 

Institutional Bubbling Coal 

Institutional Circulating Coal 

2.20 

5.14 

3.67 

6.6 

b 

NS 

0.3 

2.0 

2.0 

2.3 

1.6 

1.5-2 

1.7-2 

2.9 

3.1 

2.1 

5.5 

1.8 

2.5-3 

7 

1 

0 

0.23 

0.82 

0.33-

0.62-

b 

NS 

b 

NS 

b 

NS 

0.25 

0.28 

0.03 

0 

0 

43 

98 

98 

90 

91-

90-

92 

94 

93 

91 

90 

99 

93 

93.7 

1. 2 

3 

4 

5 

5 

Neither Che test nor duration were given for these tests. 

NS - not specified. 

To convert from thermal MW to 10 Btu/hr multiply by 3.41. 

Papers presented at 1987 International Conference on Fluidized Bed Combustion. Listed on page 3. 
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v,r 

References 

All papers listed below are published in: 

Proceedings of the 1987 International Conference on Fluidized Bed 

Combustion: FBC Comes of Age. Boston, Massachusetts. May 3-7, 1987. 

Published by the American Society of Mechanical Engineers. 

1. Tang, J.T., and F. Emgstrom, Pyropower Corporation. Technical 

Assessment on the Ahlstrom Pyroflow. Circulating and Conventional 

Bubbling Fluidized Bed Combustion Systems. 

2. Desai, D.L., et. al_. Combustion Performance, Sulphur Capture and 

Vanadium Balance Trials with Syncrude Petroleum Coke in a Circulating 

Fluidized Bed Combuster. 

3. Hodges, J.L., et. al_. Model Predictions of Combustion and Sulfur 

Capture Processes in AFBC. 

4. Barner, H.E., e_t. al. Chemical Equilibrium Relationships Applicable in 

Fluid Bed Combustion. 

5. Leckner, B. and L.E. Amand, Chalmers University of Technology. 

Emissions from a Circulating and a Stationary Fluidized Bed Boiler: A 

Comparison. 

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