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. 02, 2008
Filed:
Nov. 23, 2005
Edward S. Ellis, Basking Ridge, NJ (US);
John P. Greeley, Annandale, NJ (US);
Vasant Patel, Sugar Land, TX (US);
Murali V. Ariyapadi, Sugar Land, TX (US);
Edward S. Ellis, Basking Ridge, NJ (US);
John P. Greeley, Annandale, NJ (US);
Vasant Patel, Sugar Land, TX (US);
Murali V. Ariyapadi, Sugar Land, TX (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 desulfurized in a first hydrodesulfurization stage. The effluent stream from this first stage is sent to a separation zone wherein a lower boiling naphtha stream and a higher boiling naphtha stream are produced. The lower boiling naphtha stream is sent through at least two more separation zones, each at a lower temperature than the preceding separation stage. The higher boiling naphtha stream, which contains most of the sulfur moieties, is passed to a second hydrodesulfurization stage wherein at least a fraction of the sulfur moieties are removed.