The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 06, 1981
Filed:
Jun. 14, 1976
Emmett H Burk, Glenwood, IL (US);
Jin S Yoo, South Holland, IL (US);
John A Karch, Chicago, IL (US);
Jui-Yuan Sun, South Holland, IL (US);
Atlantic Richfield Company, Philadelphia, PA (US);
Abstract
A process for the removal of metal poisons such as nickel, iron and/or vanadium from a hydrocarbon conversion catalyst which includes the step of contacting the catalyst with a reductive wash medium comprising an aqueous, preferably saturated, solution of SO.sub.2 to remove at least a portion of the metal poisons. The vanadium and nickel metals may be recovered from the resultant used wash solution for possible metallurgical use. The SO.sub.2 reductively washed catalyst may also be subjected to a subsequent oxidative wash such as hydrogen peroxide wash prior to its return to the hydrocarbon conversion process.