Regeneration of cracking catalyst

Details Regeneration of cracking catalyst Regeneration of cracking catalyst

1980-04-21

1982-04-13

Konopka, P. E.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

208113, 208120, 208164, B01J 2938, B01J 2120, C10G 1105, C10G 1104

Patent

active

043246885

ABSTRACT:
A process for the regeneration of coke-contaminated fluidizable catalytic cracking catalyst wherein the regeneration flue gas having a reduced concentration of carbon monoxide and regenerated catalyst having a reduced residual carbon content are obtained. By this method a fluidized dense catalyst phase of coke-contaminated catalyst is regenerated with an excess amount of oxygen-containing regeneration gas at an elevated temperature such that there is a controlled afterburn of carbon monoxide to carbon dioxide in the dilute catalyst phase whereby a flue gas having a carbon monoxide content of from 0 to 500 ppm is obtained. The residence time of catalyst in the fluidized dense catalyst phase is adjusted to provide a low level of residual carbon-on-regenerated-catalyst.

REFERENCES:
patent: 2414002 (1947-01-01), Thomas et al.
patent: 3844973 (1974-10-01), Stine et al.
patent: 3849291 (1974-11-01), Owen
patent: 3909392 (1975-09-01), Horecky, Jr. et al.
patent: 4152292 (1979-05-01), Conner et al.

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