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:
Apr. 22, 2014
Filed:
Dec. 20, 2011
Shuwu Yang, Richmond, CA (US);
Julie Chabot, Novato, CA (US);
Ling Jiao, Albany, CA (US);
Joseph V. Nguyen, Albany, CA (US);
Bruce Edward Reynolds, Martinez, CA (US);
Shuwu Yang, Richmond, CA (US);
Julie Chabot, Novato, CA (US);
Ling Jiao, Albany, CA (US);
Joseph V. Nguyen, Albany, CA (US);
Bruce Edward Reynolds, Martinez, CA (US);
Chevron U.S.A. Inc., San Ramon, CA (US);
Abstract
An improved process to make a slurry catalyst for the upgrade of heavy oil feedstock is provided. In the process, at least a metal precursor feedstock is portioned and fed in any of the stages: the promotion stage; the sulfidation stage; or the transformation stage of a water-based catalyst precursor to a slurry catalyst. In one embodiment, the promoter metal precursor feedstock is split into portions, the first portion is for the sulfiding step, the second portion is for the promotion step; and optionally the third portion is to be added to the transformation step in the mixing of the sulfided promoted catalyst precursor with a hydrocarbon diluent to form the slurry catalyst. In another embodiment, the Primary metal precursor feedstock is split into portions.