Catalytic conversion of NO.sub.x with NH.sub.3

Details Catalytic conversion of NO.sub.x with NH.sub.3 Catalytic conversion of NO.sub.x with NH.sub.3

1989-12-28

1991-01-22

McFarlane, Anthony

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Cracking

208121, 208149, 423239, 502 41, C10G 1118

Patent

active

049868977

ABSTRACT:
Oxides of nitrogen (NO.sub.x) emissions are catalytically reduced by contacting a flue gas containing NO.sub.x with ammonia or an ammonia precursor in the presence of a catalyst effective for promoting the reduction of NO.sub.x with ammonia in oxidizing atmospheres, such as those in FCC catalyst regenerators. Bismuth oxides on a support are the preferred NO.sub.x reduction catalyst. The process is especially useful in reducing NO.sub.x emissions from fluidized catalytic cracking units.

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