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:
Jan. 24, 2006
Filed:
Apr. 23, 2004
Jui-hsin R. Huang, Broken Arrow, OK (US);
Kym Arcuri, Tulsa, OK (US);
Kenneth Agee, Bixby, OK (US);
Paul F. Schubert, Bartlesville, OK (US);
Jui-Hsin R. Huang, Broken Arrow, OK (US);
Kym Arcuri, Tulsa, OK (US);
Kenneth Agee, Bixby, OK (US);
Paul F. Schubert, Bartlesville, OK (US);
Syntroleum Corporation, Tulsa, OK (US);
Abstract
A process for regenerating a slurry Fischer-Tropsch catalyst, which needs regeneration, involves de-waxing and drying the catalyst sufficiently to produce a free-flowing catalyst powder that is fluidizable; fluidizing the catalyst powder; treating the catalyst powder with an oxygen treatment; reducing the catalyst powder with a reducing gas to form a reduced catalyst powder; and mixing the reduced catalyst powder with hydrocarbons to form a regenerated, slurry catalyst. The oxidation and reduction steps may be repeated. An oxygen treatment includes using a fixed Olevel with ramped temperatures, fixed temperatures with increased Olevels, or a combination.