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, 2008
Filed:
Jan. 30, 2004
Jeffrey T. Miller, Naperville, IL (US);
BO Chen, Naperville, IL (US);
Craig W. Colling, Warrenville, IL (US);
George A. Huff, Jr., Naperville, IL (US);
Marvin L. Cadwell, Naperville, IL (US);
Jeffrey T. Miller, Naperville, IL (US);
Bo Chen, Naperville, IL (US);
Craig W. Colling, Warrenville, IL (US);
George A. Huff, Jr., Naperville, IL (US);
Marvin L. Cadwell, Naperville, IL (US);
Other;
Abstract
Processes and apparatus are disclosed for recovery of purified products from a fluid mixture by means of integrated perm-selective separations with purified product recovery operations. More particularly, integrated processes of the invention comprise separations by means of one or more devices using polymeric membranes coupled with recovery of purified products by means of fractional crystallization and/or selective sorption. Processes of the invention are particularly useful for recovery of a very pure aromatic isomer when processing aromatic starting materials, for example, a pure para-xylene product from liquid mixtures even containing ethylbenzene as well as the three xylene isomers.