Fluid catalytic cracking of heavy petroleum fractions

Details Fluid catalytic cracking of heavy petroleum fractions Fluid catalytic cracking of heavy petroleum fractions

1979-11-05

1981-07-28

Gantz, Delbert E.

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Cracking

208 52CT, 208113, 208120, 252411R, 252454, 252457, 252459, C10G 916, C10G 1105

Patent

active

042808987

ABSTRACT:
A process for fluid catalytic cracking of residuum and other heavy oils comprising gas oil, petroleum residue, reduced and whole crudes and shale oil with high metals contents wherein contaminant metals comprising nickel, vanadium, copper and iron are deactivated, organic sulfur compounds deposited on the cracking catalyst are removed, wherein the said contaminant metals are deactivated by contact with a high temperature reducing atmosphere comprising carbon monoxide in a range of from about 4 to about 14 volume percent, the temperature being at least 900.degree. F. and preferably greater than 1200.degree. F., wherein the catalyst is modified with at least one inorganic sulfur oxide absorbent which reacts with sulfur oxides under regeneration conditions to form non-volatile inorganic sulfur compounds, the said sulfur oxide absorbent being present in sufficient amount to effect said reduction of said sulfur oxides.

REFERENCES:
patent: 2394710 (1946-02-01), McAfee
patent: 4013546 (1977-03-01), Suggitt et al.
patent: 4146463 (1979-03-01), Radford et al.
patent: 4200520 (1980-04-01), Gladrow et al.
Cimbalo et al. "Deposited Metals Poison FCC Catalyst", Oil Gas Journal, May 15, l972, pp. 112-122.

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