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:
Feb. 02, 2021
Filed:
Feb. 09, 2017
Exxonmobil Chemical Patents Inc., Baytown, TX (US);
Georgia Tech Research Corporation, Atlanta, GA (US);
Meha Rungta, Houston, TX (US);
Robert G. Tinger, Friendswood, TX (US);
Jeevan S. Abichandani, Houston, TX (US);
Dana L. Pilliod, League City, TX (US);
John R. Porter, Friendswood, TX (US);
Anthony Go, Houston, TX (US);
Sankar Nair, Atlanta, GA (US);
Ke Zhang, Medford, MA (US);
EXXONMOBIL CHEMICAL PATENTS INC., Baytown, TX (US);
GEORGIA TECH RESEARCH CORPORATTON, Atlanta, GA (US);
Abstract
Para-xylene is separated from a mixture of xylenes and ethylbenzene by a separation process. An ortho-selective adsorbent is used to reduce the ortho-xylene concentration of the xylenes, prior to contact of the xylenes and ethylbenzene with a para-selective adsorbent. The stream rich in ortho-xylene may be isomerized in the liquid phase to increase the amount of para-xylene therein. The para-xylene-depleted stream may be treated in the vapor phase to remove the ethylbenzene and then subjected to isomerization in the liquid phase to produce a stream having a higher than equilibrium amount of para-xylene.