Plasma treatment of flue gases

Details Plasma treatment of flue gases Plasma treatment of flue gases

B - Operations, Transporting

01

J

327/72, 204/91.8

B01J 19/12 (2006.01) B01D 53/32 (2006.01) B01D 53/60 (2006.01) B01J 12/00 (2006.01) H05H 1/48 (2006.01)

Patent

CA 1258441

ABSTRACT A method and apparatus is disclosed for reducing acid rain caused by the combustion of fossil fuels in stationary combustion units, such as power plants, smelters or refineries. Compounds such as nitric oxide and sulphur dioxide are discharged into the atmosphere from smoke stacks of these combustion units and this causes acid rain. In this invention, these compounds are treated in the smoke stacks or flues of these combustion units by subjecting the flue gases to ozone and ultraviolet radiation produced by a plasma arc burner mounted in the flue. This converts the offending compounds to water soluble oxides and an aqueous alkaline spray is introduced into the flue to dissolve and neutralize these oxides preventing the emission of the acid rain producing compounds from the combustion unit smoke stacks.

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