Table 31.3 - Options for sulphur dioxide control in public power generation plants and other large combustion boilers

Source: Compiled by NILU

Source type Typical
SO2 emissions
(g/GJ)		 Installed
capacity
(MWh)		 Investment
cost
(ECU/kWh)		 Operating
cost
(ECU/kWh)
Uncontrolled:
Hard coal 500­1000    
Brown coal 500­4000    
Heavy oil 800­1500    
Controlled:
Additive injection 140­1400   10­30 0.002­0.005
Wet scrubbing <140 194 000 30­100 0.005­0.013
Spray dry absorption <140 16 000 20­90 0.005­0.012
Ammonium scrubbing 40­400 2000 100 0.005­0.012
Wellman­Lord <140 2000 150­250 0.008­0.018
Activated carbon <140 700 100­120 0.006­0.007
Combined catalytic <140 1300 80­120 0.002­0.003
Fluidised bed combustion <400 30 000