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Flue Gas Desulfurization (FGD)

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Flue Gas Desulfurization (FGD) is a set of technologies used to remove sulfur dioxide (SO2) from exhaust flue gases of fossil-fuel power plants and other sulfur oxide emitting processes such as waste incineration, petroleum refineries, and cement and lime kilns. This is done to comply with stringent environmental regulations limiting SO2 emissions. The methods used include wet scrubbing using a slurry of alkaline sorbent, spray-dry scrubbing using similar sorbent slurries, wet sulfuric acid process recovering sulfur in the form of commercial quality sulfuric acid, SNOX Flue gas desulfurization that removes sulfur dioxide, nitrogen oxides and particulates from flue gases, and dry sorbent injection systems that introduce powdered hydrated lime or other sorbent material into exhaust ducts. The global FGD market is anticipated to rise between 2023 and 2031.

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