Method for reducing emissions of detrimental nitrogen compounds

Details Method for reducing emissions of detrimental nitrogen compounds Method for reducing emissions of detrimental nitrogen compounds

D - Textiles, Paper

21

C

D21C 11/12 (2006.01) D21C 11/06 (2006.01)

Patent

CA 2266492

A method for reducing emissions of detrimental nitrogen compounds from the chemical cycle of a pulp mill. The method comprises supplying ammonia- containing vent gases separated from salt smelt to the furnace of a boiler (1, 10) at a point where the fuel has mainly burnt, whereby the ammonia reacts with the nitrogen oxide present in the furnace to form molecular nitrogen.

Procédé de réduction des émissions de composés azotés nuisibles du cycle chimique d'une fabrique de pâte à papier. Le procédé consiste à acheminer les gaz de ventilation contenant du gaz ammoniaque séparé de la fusion de sels dans le foyer d'une chaudière (1, 10) au niveau d'un point ou le combustible est essentiellement brûlé, de manière que le gaz ammoniaque réagisse avec l'oxyde azoté présent dans le foyer pour former de l'azote moléculaire.

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