Flue Gas Desulfurization Technologies for CoalFired Power
limestone wet scrubbing. About 18% of the units, or about 25 GW e, utilize either sodiumbased or lime slurry (spray) dry scrubbing. The remainder use various regenerable processes or sorbent injection technologies of one form or another. In the United States, coalfired utility boilers have been the focus of much of the effort on emission control, since