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:
Jun. 30, 2015
Filed:
Sep. 15, 2011
Shuwu Yang, Richmond, CA (US);
Julie Chabot, Novato, CA (US);
Bruce Edward Reynolds, Martinez, CA (US);
BO Kou, Albany, CA (US);
Shuwu Yang, Richmond, CA (US);
Julie Chabot, Novato, CA (US);
Bruce Edward Reynolds, Martinez, CA (US);
Bo Kou, Albany, CA (US);
Chevron U.S.A. Inc., San Ramon, CA (US);
Abstract
A method to reduce metal deposit in the hydroprocessing or upgrade of heavy oil feedstock is provided. The method comprises feeding an improved catalyst feed to the system, with the improved catalyst feed comprising a fresh slurry catalyst and a deoiled spent catalyst, with the deoiled spent catalyst being present in an amount of at least 10% the catalyst feed for the heavy oil upgrade system to have at least a 5% reduction in metal contaminant build-up compared to heavy oil upgrade system without the deoiled spent catalyst in the feed.