Flue-gas desulfurization
（重定向自Flue Gas Desulphurisation）
![Before flue gas desulfurization was installed, the emissions from this power plant in New Mexico contained a significant amount of sulfur dioxide.](/Images/godic/202501/13/Air_.pollution_12729.jpg")
![The G. G. Allen Steam Station scrubber](/Images/godic/202501/13/G_G_Allen_Steam_Plant,_scrubber2729.JPG")
![Schematic design of the absorber of an FGD](/Images/godic/202501/13/Flue_gas_desulfurization_unit_EN.svg2729.png")
Flue-gas desulfurization (FGD) is a set of technologies used to remove sulfur dioxide (SO
2) from exhaust flue gases of fossil-fuel power plants, and from the emissions of other sulfur oxide emitting processes.