Catalyst demetallization by oxidation in a defined temperature r

Details Catalyst demetallization by oxidation in a defined temperature r Catalyst demetallization by oxidation in a defined temperature r

1978-02-13

1979-08-07

Gantz, Delbert E.

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Cracking

208113, 208251H, 208252, 252411S, 252413, B01J 2928, B01J 824, C10G 1106

Patent

active

041637097

ABSTRACT:
In a catalytic cracking process wherein the cracking catalyst is poisoned and contaminated by metal present in the feedstock, an improved process for the removal of such metal poisons as nickel, iron and/or vanadium is employed which comprises contacting a regenerated and sulfided catalyst with an oxygen-containing gas in a defined temperature range of from about 525.degree. F. to about 725.degree. F. and washing at least a portion of the metal poisons from the catalyst. A preferred wash solution is a reductive wash medium comprising a saturated, aqueous solution of SO.sub.2. The vanadium and nickel metals may be recovered from the resultant used wash solution for possible metallurgical use. The washed catalyst may also be subjected to subsequent oxidative washes such as a hydrogen peroxide wash prior to its return to the catalytic cracking process.

REFERENCES:
patent: 3122497 (1964-02-01), Erickson
patent: 3123548 (1964-03-01), Connor et al.
patent: 3147228 (1964-09-01), Erickson
patent: 3148155 (1964-09-01), Schwartz
patent: 3168459 (1965-02-01), Anderson et al.
patent: 3168460 (1965-02-01), Lehman et al.
patent: 3234145 (1966-02-01), Foster
patent: 3562150 (1971-02-01), Hamilton et al.

Affiliated with

Also associated with

Rating

Catalyst demetallization by oxidation in a defined temperature r does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Catalyst demetallization by oxidation in a defined temperature r, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Catalyst demetallization by oxidation in a defined temperature r will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1524616