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:
Apr. 15, 2014
Filed:
Apr. 06, 2011
John Di-yi Ou, Houston, TX (US);
April D. Ross, Beaumont, TX (US);
Doron Levin, Highland Park, NJ (US);
Mohan Kalyanaraman, Media, PA (US);
Wenyih Frank Lai, Bridgewater, NJ (US);
John Di-Yi Ou, Houston, TX (US);
April D. Ross, Beaumont, TX (US);
Doron Levin, Highland Park, NJ (US);
Mohan Kalyanaraman, Media, PA (US);
Wenyih Frank Lai, Bridgewater, NJ (US);
ExxonMobil Chemical Patents Inc., Houston, TX (US);
Abstract
The invention concerns a xylenes isomerization process for the production of equilibrium or near-equilibrium xylenes. The process utilizes a catalyst comprising HZSM-5 or MCM-49 and process conditions including a temperature of less than 295° C. and a pressure sufficient to maintain the xylenes in liquid phase. In embodiments, the process can be operated in a continuous mode with ppm levels of dissolved Hin the feed and in other embodiments in a cyclic mode without the Hin feed but with periodic regenerations using a feed having low ppm levels of H.