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:
Dec. 29, 2009
Filed:
Sep. 07, 2007
Applicant:
Lynn H. Rice, Arlington Heights, IL (US);
Inventor:
Lynn H. Rice, Arlington Heights, IL (US);
Assignee:
UOP LLC, Des Plaines, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 5/27 (2006.01); C07C 7/144 (2006.01);
U.S. Cl.
CPC ...
Abstract
In an isomerization process where the isomerization effluent () is fractionated in a deisohexanizer () to provide a lower boiling fraction () containing dimethylbutanes, a higher boiling fraction containing methylpentanes and a bottoms stream () containing normal hexane and heavies, the bottoms stream is contacted with a selective permeation membrane () to provide a normal hexane-containing permeate () suitable for recycle to the isomerization. The energy consumption of the deisohexanizer () can be reduced without adversely affecting the octane rating of the overhead ().