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

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

B - Operations, Transporting

01

D

B01D 53/50 (2006.01) C01C 1/247 (2006.01)

Patent

CA 2264261

SO2 containing flue gas is scrubbed with a scrubbing solution made up from ammonia water, untreated ammonium sulfate scrubbing solution recycled from the bottom of the scrubbing zone and ammonium sulfate solution formed by oxidizing a portion of the recovered ammonium sulfite scrubbing solution. The ammonium sulfite/ammonium sulfate mixing ratio is maintained at 15:1 to 3:1.

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