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:
Jun. 25, 2002
Filed:
Dec. 03, 1999
Janet R. Clark, Baton Rouge, LA (US);
Michele S. Touvelle, Baton Rouge, LA (US);
Thomas R. Halbert, Baton Rouge, LA (US);
Bruce R. Cook, Stewartsville, NJ (US);
Garland B. Brignac, Clinton, LA (US);
William C. Baird, Jr., Baton Rouge, LA (US);
ExxonMobil Research and Engineering Company, Annandale, NJ (US);
Abstract
Naphtha desulfurization with reduced product mercaptans is achieved by reacting a naphtha feed containing sulfur compounds and olefins with hydrogen in the presence of a hydrosesulfurization catalyst at reaction conditions including a temperature of from 290-425° C., a pressure of from 60-150 psig, and a hydrogen gas ratio of from 2000-4000 scf/b. It has been found that desulfurizing within these narrow conditions permits deep desulfurization with reduced mercaptan reversion, to produce a naphtha product with low total sulfur and low mercaptan sulfur levels.