Method of regenerating coke-contaminated catalyst with simultane

Details Method of regenerating coke-contaminated catalyst with simultane Method of regenerating coke-contaminated catalyst with simultane

1976-06-17

1979-04-10

Douglas, Winston A.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

208113, 208120, 208164, 252416, 252417, B01J 2120, B01J 2396, B01J 2938, C10G 1104

Patent

active

041487516

ABSTRACT:
A method for regenerating a coke-contaminated cracking catalyst with the simultaneous carefully controlled catalyzed combustion of CO to CO.sub.2 within a regeneration zone to produce regenerated catalyst and flue gas. Novel features of the method include adding to the regeneration zone, independently of the cracking catalyst, a supported CO oxidation promoter and combusting CO to CO.sub.2 in the presence of the promoter and regenerated catalyst. A supported oxidation promoter may be added to the regeneration zone in amounts to control the CO concentration in the flue gas, a regeneration zone temperature, or the residual carbon concentration on regenerated catalyst.

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