Reducing NO.sub.x emissions with antimony additive

Details Reducing NO.sub.x emissions with antimony additive Reducing NO.sub.x emissions with antimony additive

1989-12-28

1991-01-29

McFarlane, Anthony

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Cracking

208113, 208149, 423239, 502 42, C10G 1118

Patent

active

049884328

ABSTRACT:
A process for regeneration of cracking catalyst while minimizing NO.sub.x emissions is disclosed. A DeNOx additive is present in an amount and in a form which reduces NO.sub.x emissions, but does not passivate metals (such as Ni and V) deposited on the catalyst during the cracking reaction nor CO combustion promoter which may be present. Relatively small amounts of antimony oxides impregnated on a separate support having little or no cracking activity are preferred.

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