Compositions – Preservative agents – Anti-oxidants or chemical change inhibitants
Patent
1976-06-14
1978-07-25
Gantz, Delbert E.
Compositions
Preservative agents
Anti-oxidants or chemical change inhibitants
208 52CT, 208120, 252411S, 252413, 252415, 252416, 252455Z, C10G 1118, B01J 824, B01J 2938
Patent
active
041028112
ABSTRACT:
A process for the removal of metal poisons such as nickel, iron and/or vanadium from a hydrocarbon conversion catalyst which includes the steps of contacting a regenerated 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 hydrocarbon conversion process.
REFERENCES:
patent: 3122497 (1964-02-01), Erickson
patent: 3123548 (1964-03-01), Connor et al.
patent: 3147209 (1964-09-01), Erickson et al.
patent: 3147228 (1964-09-01), Erickson
patent: 3148155 (1964-09-01), Schwartz
patent: 3150103 (1964-09-01), Anderson
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.
Burk Emmett H.
Karch John A.
Sun Jui-Yuan
Yoo Jin S.
Atlantic Richfield Company
Gantz Delbert E.
Schmitkons G. E.
Uxa Frank J.
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