Gerald Gentleman #1 Wet Scrubber

Given/Assumed

Flow rate (acfm)

Flue Gas Temperature (degrees F)

Uncontrolled SO2 emissions (TPY) 2001 - 2003CAM data 24,893

Absorber + $62,436,000 company report

ductwork $46,051,000 company report

Retrofit factor 1.0 NPS estimate

SO2 Control efficiency 93.6% NPS estimate

Control System Pressure Drop In. wc)

Operating Hours per Year 8760 NPS estimate

Operating Hours per Shift 8 NPS estimate

Operating Shifts per Year 1095 NPS estimate

Operating Labor Cost ($/hr) $ company report 40.60

Maintenance Labor Cost ($/hr)

Waste generation (lb/hr)

Waste disposal cost ($/ton) $ company report 5.00

Solvent usage (gpm)

Solvent cost ($/kgal) $ company report 1.00

Chemical usage (lb/hr)

Chemical cost ($/ton) $ company report 26.00

Electrical Cost ($/kWh)

Fan-Motor Efficiency (%)

Equipment Life (yr) 15 OAQPS Control Cost Manual

Interest Rate (%) 7.00% OAQPS Control Cost Manual
Gerald Gentleman #1 Wet Scrubber

Capital Cost factors for Gas Absorbers--OAQPS Control Cost Manual, Chap 9

Cost Item Factor Cost

Direct Costs

Purchased equipment costs

Absorber + auxiliary equipment, EC A $108,487,000

Instrumentation 0.10 A

Sales taxes 0.03 A $3,254,610

Freight 0.05 A $5,424,350

Purchased equipment cost, PEC B= 1.18 A $117,165,960

Direct installation costs

Foundations & supports 0.12 B $14,059,915

Handling & erection 0.40 B $46,866,384

Electrical 0.01 B $1,171,660

Piping 0.30 B $35,149,788

Insulation 0.01 B $1,171,660

Painting 0.01 B $1,171,660

Direct installation costs x 1 x 0.85 B $99,591,066

Site preparation As required, SP

Buildings As required, Bldg.

Total Direct Costs, DC 1.85 B+SP+Bldg $216,757,026

Indirect Costs (installation)

Engineering 0.10 B $11,716,596

Construction and field expenses 0.10 B $11,716,596

Contractor fees 0.10 B $11,716,596

Start-up 0.01 B $1,171,660

Performance test 0.01 B $1,171,660

Contingencies 0.03 B $3,514,979

Total Indirect Costs, IC 0.35 B $41,008,086

Total Capital Investment = DC + IC 2.20 B+SP+Bldg $257,765,112
Gerald Gentleman #1 Wet Scrubber

Annual Cost factors for Gas Absorbers--OAQPS Control Cost Manual, Chap

Cost Item Factor

Direct Annual Costs, DC

Operating labor

Operator 0.5 hr/shift

Supervisor 15% of operator

Operating materials

Solvent 0 gpm * $ /kgal = 1.00

Chemicals 0 lb/hr * $ /ton = 26.00

Wastewater Disposal 0 lb/hr * $ /ton = 5.00

Maintenance

Labor 0.5 hr/shift

Material 100.00% of maintenance

Electricity All electricity equal to:

fan 0.000181 * 0 acfm* 0 in.wc*

8760 hr/yr * 0 unit cost =

pump

Total DC

Indirect Annual Costs, IC

Overhead 60% of total labor and material costs

Administrative charges 2% of Total Capital Investment

Property tax 1% of Total Capital Investment

Insurance 1% of Total Capital Investment

Capital recovery 0.1098 * Total Capital Investment

Total IC

Total Annual Cost DC + IC
p 5

Cost

$22,229

$3,334

$0

$0

$0

$0

$0

$0

$25,563

$15,338

$5,155,302

$2,577,651

$2,577,651

$28,301,224

$38,627,166

$38,652,729
Gerald Gentleman #1 Wet Scrubber

SO2

Uncontrolled emissions (TPY) 24,893 

Control efficiency (%) 94%

Emission reduction (TPY) 23,302 

Controlled emissions (TPY) 1,591 

Total annualized cost ($/yr) $38,652,729

Cost/ton removed ($/T) $1,659