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. 05, 2016
Filed:
Jun. 10, 2015
Exxonmobil Chemical Patents Inc., Baytown, TX (US);
Michel Molinier, Houston, TX (US);
Jeevan S. Abichandani, Houston, TX (US);
Jeffrey L. Andrews, Houston, TX (US);
Timothy P. Bender, Houston, TX (US);
Robert G. Tinger, Friendswood, TX (US);
Dennis J. Stanley, Houston, TX (US);
George J. Wagner, Tomball, TX (US);
ExxonMobil Chemicals Patents Inc., Baytown, TX (US);
Abstract
In a process for producing para-xylene, a feed stream comprising Caromatic hydrocarbons is separated into a toluene-containing stream, a Caromatic hydrocarbon-containing stream and a Caromatic hydrocarbon-containing stream. The toluene-containing stream is contacted with a methylating agent to convert toluene to xylenes and produce a methylated effluent stream. Para-xylene is recovered from the Caromatic hydrocarbon-containing stream and the methylated effluent stream in a para-xylene recovery section to produce a para-xylene depleted stream, which is then contacted with a xylene isomerization catalyst under liquid phase conditions effective to isomerize xylenes in the para-xylene depleted stream and produce an isomerized stream. The C-containing stream with a transalkylation catalyst under conditions effective to convert C-aromatics to C-aromatics and produce a transalkylated stream, which is recycled together with the isomerized stream to the para-xylene recovery section.