Method of removing sulfur dioxide from flue gases and...

Details Method of removing sulfur dioxide from flue gases and... Method of removing sulfur dioxide from flue gases and...

B - Operations, Transporting

01

D

B01D 53/14 (2006.01) B01D 53/50 (2006.01)

Patent

CA 2691027

A method of removing sulfur dioxide from flue gases using calcium and magnesium scrubbing components and treatment of oxidized effluent from such a system includes passing classified oxidized effluent to a regeneration tank and adding lime to produce a regenerator discharge containing magnesium hydroxide, gypsum and crystalline inert material. Gypsum is separated from the discharge and a magnesium hydroxide stream passed to a concentration system to produce a concentrated solids stream of magnesium hydroxide, residual minor amount of gypsum and crystalline inert material. A portion of the resultant stream is returned to the sulfur dioxide removal system while a portion is passed to the oxidizer. Further portions may be fed to a power plant boiler or to the flue gas stream between a solids collection device and the wet scrubber.

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