Process and apparatus for reducing the nitrogen oxide...

Details Process and apparatus for reducing the nitrogen oxide... Process and apparatus for reducing the nitrogen oxide...

B - Operations, Transporting

01

D

B01D 53/94 (2006.01) F01N 3/20 (2006.01)

Patent

CA 2329994

In the reduction of quantities of No x in the exhaust gases of lean burn engines such as diesel engines, using a selective reduction catalyst and a source of ammonia, the present invention improves overall conversion by supplying ammonia or a precursor intermittently so that it is adsorbed and desorbed during the engine operating cycle.

La présente invention permet de réduire la quantité de Nox dans des gaz d'échappement de moteurs à gaz pauvre, tels que des moteurs diesel, au moyen d'un catalyseur de réduction sélectif et d'une source d'ammoniac. Le procédé de l'invention améliore la conversion complète par injection intermittente d'ammoniac ou d'un précurseur, de sorte que l'ammoniac ou le précurseur soit adsorbé et désorbé pendant le cycle de fonctionnement du moteur.

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