flue gas desulfurization reaction
FGD, short for flue gas desulfurization, is a necessary procedure for cleaning sulfur dioxide (SO2) from the emissions of fossil-fuel driven power plants. Through FGD, flue gases are scrubbed with a sorbent--usually limestone or lime--that will react to and capture SO2. The effect is to make it into harmless by-products like gypsum. Key technological features of the automated system include absorber towers, slurry handling systems, and gypsum dewatering systems At the same time, this detachable system is constructed to meet stringent environmental requirements and can be fitted on existing power plants. Many coal burning power plants have adopted the FGD approach, preventing air pollution and its attendant social and environmental damages.