Two-stage catalysis of engine exhaust

Details Two-stage catalysis of engine exhaust Two-stage catalysis of engine exhaust

F - Mech Eng,Light,Heat,Weapons

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172/9

F01N 3/18 (2006.01) B01D 53/94 (2006.01) F01N 3/20 (2006.01) F01N 3/28 (2006.01) F01N 13/02 (2010.01) F02B 1/04 (2006.01)

Patent

CA 1107653

TWO-STAGE CATALYSIS OF ENGINE EXHAUST Abstract of the Disclosure The invention relates to reduction of nitric oxide in exhausts from hydrocarbon burning engines. The nitric oxide is reacted with ammonia over a first catalyst and then the excess gas over a second catalyst. The resulting effluent stream has greatly reduced nitric oxide content without having an objection- able ammonia content.

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