Catalytic cracking of hydrocarbons

Details Catalytic cracking of hydrocarbons Catalytic cracking of hydrocarbons

1978-03-17

1980-07-15

Gantz, Delbert E.

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Cracking

208113, 208164, 252417, C10G 1104, C01B 2912, B01J 824

Patent

active

042127289

ABSTRACT:
The combustion of carbon monoxide in the regenerator of a fluid catalytic cracking plant is controlled by adding a minute amount of a platinum metal compound or a rhenium compound to the circulating inventory of cracking catalyst during operation of the plant. The addition is accomplished by introducing a solution of the compound into a side-stream of the circulating inventory cooled preferably to about the boiling point of the solvent. Excess solvent may be used as coolant. The addition may be made to coked or to regenerated catalyst. Suitable solvents include water and organic fluids boiling above about 140.degree. F. to about 600.degree. F. A particularly suitable side-stream apparatus is disclosed.

REFERENCES:
patent: 4064037 (1977-12-01), Graven et al.
patent: 4072600 (1978-02-01), Schwartz
patent: 4088568 (1978-05-01), Schwartz
patent: 4093535 (1978-06-01), Schwartz
patent: 4108795 (1978-08-01), Hemler et al.
patent: 4115250 (1978-09-01), Flanders et al.

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