Additive for vanadium and sulfur oxide capture in catalytic crac

Details Additive for vanadium and sulfur oxide capture in catalytic crac Additive for vanadium and sulfur oxide capture in catalytic crac

1988-06-10

1991-10-15

Myers, Helane E.

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Cracking

208114, 208 91, 208 52CT, 208113, 208120, 502 68, 502 84, 502521, C10G 1102

Patent

active

050572059

ABSTRACT:
A catalytic cracking process especially useful for the catalytic cracking of high metals content feeds including resids in which the feed is cracked in the presence of a catalyst additive comprising an alkaline earth metal oxide and an alkaline earth metal spinel, preferably a magnesium aluminate spinel which acts as a trap for vanadium as well as an agent for reducing the content of sulfur oxides in the regenerator flue gas. The additive is used in the form of a separate additive from the cracking catalyst particles in order to keep the vanadium away from the cracking catalyst and so preserve the activity of the catalyst; in addition, use of separate additive particles permits the makeup rate for the additive to be varied relative to that of the cracking catalyst in order to deal with variations in the metals and sulfur content of the cracking feed. The additive may be separated from the cracking catalyst by physical classification so that it can be separately withdrawn from the unit for better control of the catalyst/additive ratio. The additive may be injected into the unit separate from the cracking catalyst so that it contacts the feed first to effect a preliminary demetallation.

REFERENCES:
patent: 4221677 (1980-09-01), Vasalos et al.
patent: 4381991 (1983-05-01), Bertolacini et al.
patent: 4465779 (1984-08-01), Ocalli
patent: 4469589 (1984-09-01), Yoo et al.
patent: 4472267 (1984-09-01), Yoo et al.
patent: 4497902 (1985-02-01), Bertolacini et al.
patent: 4519897 (1985-05-01), DeJong
patent: 4549958 (1985-10-01), Beck et al.

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