Catalytic process for reducing nitrogen oxides in flue gases...

Details Catalytic process for reducing nitrogen oxides in flue gases... Catalytic process for reducing nitrogen oxides in flue gases...

B - Operations, Transporting

01

D

B01D 53/86 (2006.01) B01D 53/90 (2006.01) B01D 53/94 (2006.01)

Patent

CA 2514881

The invention relates to a catalytic process for reducing nitrogen oxides in flue gases, in which process a reducing agent containing composition is mixed with flue gas and the mixture achieved is brought into contact with a catalyst. In accordance with the invention, the composition contains e.g. 1 to 60% of weight of ammonium formate. Especially a low freezing point can be achieved with such water containing composition. In addition, a good reduction conversion is achieved even at low temperatures.

L'invention concerne un procédé catalytique pour réduire les oxydes d'azote dans des gaz de combustion, procédé selon lequel une composition contenant un agent de réduction est mélangée aux gaz de combustion, puis le mélange obtenu est mis en contact avec un catalyseur. Selon l'invention, ladite composition contient par exemple 1 à 60 % en poids de formiate d'ammonium. Cette composition contenant de l'eau permet en particulier d'obtenir un bas point de congélation. En outre, une bonne réduction peut être obtenue même à basse température.

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