Process for removing nox/sox oxides from gases

Details Process for removing nox/sox oxides from gases Process for removing nox/sox oxides from gases

B - Operations, Transporting

01

D

B01D 53/60 (2006.01) B01D 53/50 (2006.01) B01D 53/56 (2006.01) C01B 17/69 (2006.01) C01B 21/38 (2006.01)

Patent

CA 2149443

A process for removing nitrogen oxides (NOx) and sulfur oxides (SOx) from gaseous streams. The gaseous stream is contacted with an aqueous solution of chloric acid in an oxidation scrubber (14). The resultant oxidized gaseous stream is then contacted with water, an aqueous solution of an alkaline compound or an aqueous solution of a sulfur based reducing agent in scrubber (30) to remove the nitrogen oxides and sulfur oxides from the oxidized gaseous stream. The process can be operated to treat "dirty" gas streams containing particulate and compounds which may poison or contaminate NOx removal systems employing catalyst.

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