So.sub.2 scrubbing system for flue gas desulfurization

Details So.sub.2 scrubbing system for flue gas desulfurization So.sub.2 scrubbing system for flue gas desulfurization

B - Operations, Transporting

01

D

23/349

B01D 53/00 (2006.01) B01D 53/50 (2006.01) C01B 17/60 (2006.01)

Patent

CA 1129181

II. ABSTRACT Sulfur dioxide is scrubbed from boiler flue gases in a double-loop alkali scrubber, one a quencher loop and the other an absorption loop. The reagent flow of the two loops is cycled to the absorber loop and a portion of the make-up water for the quencher loop is received from the absorber loop. By controlling recycled water from a dewatering system and selective utilization of high and low solids streams from the absorber system, the quencher slurry concentration may be controlled and the requirement for new make-up water reduced.

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