Removal of sulfur oxides from gas streams with ammonium sulfite

Details Removal of sulfur oxides from gas streams with ammonium sulfite Removal of sulfur oxides from gas streams with ammonium sulfite

C - Chemistry, Metallurgy

01

B

23/349

C01B 17/00 (2006.01)

Patent

CA 1250410

ABSTRACT OF THE DISCLOSURE A process is disclosed to produce a commercially-valuable, concentrated nitrogen-sulfur solution by scrubbing sulfur dioxide from flue and other gases using ammonium sulfite solution as a scrubbing media in a two-stage process. The process also has the capability of removing the sulfur dioxide in the form of an insoluble zinc salt or calcium salt from the scrubbing solution without having to regenerate, recover and recirculate gaseous ammonia.

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