Sulfur oxides control in catalytic cracking

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

1977-12-16

1979-09-04

Gantz, Delbert E.

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Cracking

208113, 252417, 252455Z, 255477R, 423244, 423563, C10G 1104, B01J 2120, C01B 1760

Patent

active

041667875

ABSTRACT:
The amount of sulfur oxides in flue gas evolved in a catalyst regenerator 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.degree.-1600.degree.0 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.

REFERENCES:
patent: 4071436 (1978-01-01), Blanton et al.
patent: 4091076 (1978-05-01), Vogel et al.
patent: 4115249 (1978-09-01), Blanton et al.
patent: 4115250 (1978-09-01), Blanton et al.
patent: 4115251 (1978-09-01), Blanton et al.

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