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. 03, 2008
Filed:
Jan. 30, 2004
George A. Huff, Jr., Naperville, IL (US);
BO Chen, Aurora, IL (US);
Craig W. Colling, Warrenville, IL (US);
Jeffrey T. Miller, Naperville, IL (US);
George A. Huff, Jr., Naperville, IL (US);
Bo Chen, Aurora, IL (US);
Craig W. Colling, Warrenville, IL (US);
Jeffrey T. Miller, Naperville, IL (US);
BP Corporation North America Inc., Warrenville, IL (US);
Abstract
Processes are disclosed for production of purified products from a fluid mixtures of Caromatics by means of integration of perm-selective separations with purified product recovery operations. The perm-selective separations of the invention comprise of one or more devices using polymeric perm-selective membrane devices to separate a meta-xylene enriched stream from fluid mixtures of Caromatics thereby producing a fluid comprising the remaining aromatic compounds which advantageously includes para-xylene. Processes of the invention are particularly useful for recovery of very pure meta-xylene and para-xylene co-products from liquid mixtures even containing ethylbenzene as well as the three xylene isomers.