Catalytic cracking of hydrocarbons

Details Catalytic cracking of hydrocarbons Catalytic cracking of hydrocarbons

1989-12-21

1990-11-27

McFarlane, Anthony

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Cracking

208121, 208149, 208254R, 423239, 502 41, 502 67, C10G 1105

Patent

active

049733990

ABSTRACT:
Emission of noxious nitrogen oxides with the flue gas from the regenerator of a fluid catalytic cracking plant are reduced by incorporating into the circulating inventory of cracking catalyst separate additive particles that contain a copper-loaded zeolite. A particularly effective additive is provided, for example, by treating a ZSM-5 zeolite in a matrix consisting predominantly of titania, zirconia or a mixture thereof with a solution containing both copper and rare earth cations to incorporate both of these elements with the zeolitic composition.

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