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:
Mar. 24, 1981
Filed:
Nov. 01, 1979
John S Roberts, Bartlesville, OK (US);
Dwight L McKay, Bartlesville, OK (US);
Brent J Bertus, Bartlesville, OK (US);
H Wayne Mark, Bartlesville, OK (US);
Phillips Petroleum Company, Bartlesville, OK (US);
Abstract
A passivating agent is added to a cracking catalyst which has not been previously treated with the passivating agent by mixing the untreated cracking catalyst with a refractory material which has been previously treated with a passivating agent. At least a portion of the passivating agent is transferred by inter-particle transfer from the treated refractory material to the untreated cracking catalyst. A passivating agent may also be recovered from a previously treated cracking catalyst which has become contaminated by contacting the contaminated cracking catalyst with a refractory material which has not previously been treated with the passivating agent. At least a portion of the passivating agent will transfer by inter-particle transfer from the contaminated catalyst to the refractory material while the contaminants on the contaminated cracking catalyst will not transfer.