Sulfur oxides control in catalytic cracking

Details Sulfur oxides control in catalytic cracking Sulfur oxides control in catalytic cracking

C - Chemistry, Metallurgy

10

G

196/106

C10G 11/18 (2006.01) B01D 53/50 (2006.01) C10G 11/05 (2006.01)

Patent

CA 1113417

ABSTRACT OF THE DISCLOSURE The amount of sulfur oxides in flue gas evolved in a catalyst re- generator in a catalytic cracking system is lowered by incorporating into the cracking catalyst, before using the catalyst in the cracking system, finely divided, high surface area alumina which has been calcined at 700- 1600°F before incorporation into the catalyst. Sulfur oxides react with the calcined alumina in the regenerator to form a sulfur-containing solid. The sulfur-containing solid reacts with hydrocarbon to form fluid sulfur compounds in the FCC reactor, and the sulfur compounds exit the reactor mixed with the cracked hydrocarbons.

310220

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