Process for removing sulfur dioxide in a wet scrubber

Details Process for removing sulfur dioxide in a wet scrubber Process for removing sulfur dioxide in a wet scrubber

B - Operations, Transporting

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D

165/2, 23/349

B01D 53/34 (2006.01) B01D 53/50 (2006.01)

Patent

CA 1105677

ABSTRACT OF THE DISCLOSURE A process for removing oxides of sulfur from a waste gas stream in a wet scrubber. The process provides for intro- ducing a controlled amount of SO2 reactant solution and a controlled amount of fly ash solution, formed from fly ash removed from the gas stream prior to its introduction into the scrubber, into the scrubber while removing a controlled amount of the resulting solution and circulating it to a recycle tank A controlled amount of alkali solution is added to the result- ing solution in the recycle tank to maintain a pH of from 4.0 to 8.0 and this solution is in turn circulated back to the scrubber as the reactant solution.

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