Overview :
Overview Emission Factors for SOx sources
Coal combustion
Oil combustion
Gas combustion
Petroleum refining
Non-road diesel
Coal Combustion :
Coal Combustion Emission Factor : 38*%S
35*%S (with controls)
developed from measuring boiler emissions
relatively constant and reliable
%S is the main factor in determining emission
Oil Combustion :
Oil Combustion Emission Factor
based on 98% conversion of fuel sulfur
0.98 x MWSO2/MWS x %S/100 x oil density x gallons of oil (1000)
only thing that varies is the oil density (and some S goes to SO3
Control Techniques:
wet scrubber - 80-98%
spray drying - 70-90%
furnace injection - 25-50%
duct injection - 25-50%
Gas Combustion :
Gas Combustion Emission Factor
based on sulfur content of fuel
actual emissions not measured
conservative, assume all S -->SO2
little quantitative basis
(S grains/100 ft^3)(lb/7000 grains)(ft^3/10^3 gal)(2 lb SO2 /lb S) sulfur content* X lb SO2 /10^3gal
Petroleum Refining :
Petroleum Refining No background documentation
Multiple Processes:
Separation
Conversion
Treating
Feedstock and product handling
Auxiliary processes
Converts crude oil into 2500+ refined products
EF for fluid catalytic cracking units:
1.413 (0.286 to 1.505) kg SO2/10^3L feed
Non-Road Diesel :
Non-Road Diesel Not included in AP-42 online
Emissions based on: travel & rate of emission
SOx based on 0.25%S in fuel (can be adjusted)
THE END! :
THE END!