Catalytic cracking with reduced emission of noxious gas

Details Catalytic cracking with reduced emission of noxious gas Catalytic cracking with reduced emission of noxious gas

1980-09-15

1984-04-03

Gantz, Delbert E.

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Cracking

208159, 208164, 208121, 502 38, C10G 1118, B01J 3714

Patent

active

044406320

ABSTRACT:
Emissions of sulfur oxides from the regenerator of a fluidized catalytic cracking unit are reduced by selectively removing a portion of the sulfur from sulfur-containing coke deposits on deactivated cracking catalyst. This is accomplished by reaction of these deposits with limited amounts of molecular oxygen in a stripping zone at a temperature in the range from about 550.degree. to about 700.degree. C. Effluent gas from the striping zone is combined with the cracked hydrocarbon products.

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patent: 4276150 (1981-06-01), McHenry, Jr.
patent: 4283273 (1981-08-01), Owen

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