Fluid catalytic cracking

Details Fluid catalytic cracking Fluid catalytic cracking

1982-04-26

1984-01-31

Gantz, Delbert E.

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Plural serial stages of chemical conversion

208159, 208163, 502 41, C10G 5100, C10G 1118, B01J 3714

Patent

active

044288220

ABSTRACT:
A method for maintaining a desired catalyst regeneration temperature in a fluid catalytic cracking unit operating with complete combustion of coke to carbon dioxide when the coke content of the spent catalyst supplied to the regeneration zone from the reaction zone is insufficient to maintain the temperature in the regeneration zone necessary for complete combustion of coke to carbon dioxide in which residual liquid hydrocarbon from the cracking reaction zone is introduced into contact with partially spent cracking catalyst at cracking reaction temperature effecting conversion of said residue to volatile reaction products and additional coke deposit on the spent catalyst in an amount sufficient to maintain the temperature in the regeneration zone necessary for complete combustion of coke to carbon dioxide and substantially complete removal of carbon from the catalyst.

REFERENCES:
patent: 2994659 (1961-08-01), Slyngstad et al.
patent: 3812029 (1974-05-01), Snyder, Jr.
patent: 3856659 (1974-12-01), Owen
patent: 3894933 (1975-07-01), Owen et al.

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