Removal of nitrogen oxides from gas streams

Details Removal of nitrogen oxides from gas streams Removal of nitrogen oxides from gas streams

B - Operations, Transporting

01

D

B01D 53/56 (2006.01) B01D 53/86 (2006.01)

Patent

CA 2206236

Temperature rise during the exothermic reduction of nitrogen oxides contained in a carbon dioxide-rich gas stream to nitrogen by contacting the gas stream with ammonia in a reactor containing a reduction catalyst is controlled by recycling a portion of the gaseous effluent from the reactor to the gas stream prior to its introduction into the reactor, thereby cooling the reactor contents without diluting the carbon dioxide in the effluent.

L'augmentation de la température pendant la réduction exothermique des oxydes d'azote contenus dans un courant gazeux riche en dioxyde de carbone et transformés en azote par le contact du courant gazeux avec de l'ammoniaque dans un réacteur contenant un catalyseur de réduction, est contrôlée par le recyclage d'une partie de l'effluent gazeux provenant du réacteur vers le courant gazeux avant son introduction dans le réacteur, refroidissant ainsi les contenus du réacteur sans diluer le dioxyde de carbone dans l'effluent.

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