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. 20, 2012
Filed:
Nov. 05, 2003
Darush Farshid, Larkspur, CA (US);
Richard O. Moore, Jr., San Rafael, CA (US);
Darush Farshid, Larkspur, CA (US);
Richard O. Moore, Jr., San Rafael, CA (US);
Chevron U.S.A. Inc., San Ramon, CA (US);
Abstract
An integrated process for producing liquid fuel and lubricating base oil from Fischer-Tropsch derived products which comprises (a) recovering separately from a Fischer-Tropsch synthesis reactor a Fischer-Tropsch wax and condensate; (b) hydroprocessing the wax and recovering a waxy intermediate and a hydrogen-rich normally, liquid fraction; (c) mixing the condensate and at least part of the hydrogen-rich normally liquid fraction to form a Fischer-Tropsch condensate mixture; (d) hydrotreating the condensate mixture and recovering a Fischer-Tropsch condensate product; (e) recovering from the condensate product a liquid fuel; (f) separately dewaxing the waxy intermediate and recovering a base oil; (g) hydrofinishing the base oil; (h) recovering from the hydrofinishing zone a stabilized base oil and a hydrogen-rich gas; and (i) recycling the hydrogen-rich gas to the wax hydroprocessing zone wherein the total pressure in the hydrofinishing zone is at least as high as the total pressure in the wax hydroprocessing zone.