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:
Jul. 05, 2005
Filed:
Oct. 18, 2002
John C. Coker, Baytown, TX (US);
Garland B. Brignac, Clinton, LA (US);
Thomas R. Halbert, Baton Rouge, LA (US);
John G. Matragrano, Baton Rouge, LA (US);
Brij Gupta, Thornhill, CA;
Robert C. Welch, Baton Rouge, LA (US);
William E. Winter, Jr., Pensacola, FL (US);
John C. Coker, Baytown, TX (US);
Garland B. Brignac, Clinton, LA (US);
Thomas R. Halbert, Baton Rouge, LA (US);
John G. Matragrano, Baton Rouge, LA (US);
Brij Gupta, Thornhill, CA;
Robert C. Welch, Baton Rouge, LA (US);
William E. Winter, Jr., Pensacola, FL (US);
ExxonMobil Research and Engineering Company, Annandale, NJ (US);
Abstract
A process for the selective hydrodesulfurization of olefinic naphtha streams containing a substantial amount of organically bound sulfur and olefins. The olefinic naphtha stream is selectively hydrodesulfurized in a first sulfur removal stage and resulting product stream, which contains hydrogen sulfide and organosulfur is fractionated at a temperature to produce a light fraction containing less than about 100 wppm organically bound sulfur and a heavy fraction containing greater than about 100 wppm organically bound sulfur. The light fraction is stripped of at least a portion ofits hydrogen sulfide and can be collected or passed to gasoline blending. The heavy fraction is passed to a second sulfur removal stage wherein at least a portion of any remaining organically bound sulfur is removed.