Method of reducing nox compounds in flue gases of recovery...

Details Method of reducing nox compounds in flue gases of recovery... Method of reducing nox compounds in flue gases of recovery...

D - Textiles, Paper

21

C

D21C 11/06 (2006.01) B01D 53/02 (2006.01) B01D 53/14 (2006.01) B01D 53/56 (2006.01)

Patent

CA 2322429

A method of reducing NO X compounds in the odour gases of a recovery boiler. In the method, ammonia in the odour gases is separated before they are combusted, the ammonia being then introduced into a boiler at the pulp mill or into a separate catalyzer, where it reacts with nitrogen oxide forming water and molecular nitrogen.

L'invention concerne un procédé de réduction de composés NOX dans les gaz odorants d'une chaudière de récupération. Dans ce procédé, on sépare l'ammoniac contenu dans les gaz odorants avant leur combustion, l'ammoniac étant ensuite introduit dans une chaudière d'une usine de pâte à papier ou dans un catalyseur séparé, dans lequel il réagit avec de l'oxyde d'azote formant de l'eau et de l'azote moléculaire.

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