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. 01, 2011
Filed:
Sep. 18, 2008
Julie Chabot, Novato, CA (US);
BO Kou, Albany, CA (US);
Vivion Andrew Brennan, San Francisco, CA (US);
Erin Maris, Alameda, CA (US);
Shuwu Yang, Richmond, CA (US);
Julie Chabot, Novato, CA (US);
Bo Kou, Albany, CA (US);
Vivion Andrew Brennan, San Francisco, CA (US);
Erin Maris, Alameda, CA (US);
Shuwu Yang, Richmond, CA (US);
Chevron U.S.A. Inc., San Ramon, CA (US);
Abstract
Systems and methods for hydroprocessing a heavy oil feedstock with reduced heavy oil deposits, the system employs a plurality of contacting zones and separation zones zone under hydrocracking conditions to convert at least a portion of the heavy oil feedstock to lower boiling hydrocarbons, forming upgraded products, wherein water and/or steam being injected into first contacting zone in an amount of 1 to 25 weight % on the weight of the heavy oil feedstock. The contacting zones operate under hydrocracking conditions, employing a slurry catalyst for upgrading the heavy oil feedstock, forming upgraded products of lower boiling hydrocarbons. In the separation zones, upgraded products are removed overhead and optionally, further treated in an in-line hydrotreater. At least a portion of the non-volatile fractions recovered from at least one of the separation zones is recycled back to the first contacting zone in the system.