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:
Sep. 09, 2008
Filed:
May. 01, 2003
Edward S. Ellis, Falls Church, VA (US);
Thomas R. Halbert, Baton Rouge, LA (US);
Garland B. Brignac, Clinton, LA (US);
John P. Greeley, Annandale, NJ (US);
Richard A. Demmin, Highland Park, NJ (US);
Theresa A. Lalain, Baton Rouge, LA (US);
Edward S. Ellis, Falls Church, VA (US);
Thomas R. Halbert, Baton Rouge, LA (US);
Garland B. Brignac, Clinton, LA (US);
John P. Greeley, Annandale, NJ (US);
Richard A. Demmin, Highland Park, NJ (US);
Theresa A. Lalain, Baton Rouge, LA (US);
ExxonMobil Research and Engineering Company, Annandale, NJ (US);
Abstract
Naphtha hydrodesulfurization selectivity is increased by reducing the amount of CO(CO plus ½ CO) in the hydrodesulfurization reaction zone to less than 100 vppm. While this is useful for non-selective hydrodesulfurization, it is particularly useful for selectively desulfurizing an olefin-containing naphtha without octane loss due to olefin saturation by hydrogenation. The COreduction is achieved by removing COfrom the treat gas before it is passed into the reaction zone.