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. 22, 2021
Filed:
Dec. 05, 2018
Applicant:
Bp Corporation North America Inc., Houston, TX (US);
Inventor:
Brian Benjamin, Chicago, IL (US);
Assignee:
Ineos US Chemicals Company, Naperville, IL (US);
Primary Examiner:
Int. Cl.
CPC ...
C07C 7/12 (2006.01); C07C 5/22 (2006.01); B01D 53/047 (2006.01); C07C 5/27 (2006.01); C07C 7/14 (2006.01); C07C 7/00 (2006.01);
U.S. Cl.
CPC ...
B01D 53/047 (2013.01); C07C 5/2732 (2013.01); C07C 7/005 (2013.01); C07C 7/12 (2013.01); C07C 7/14 (2013.01); B01D 2256/24 (2013.01); B01D 2257/7027 (2013.01); B01D 2259/40045 (2013.01); B01D 2259/40056 (2013.01); B01D 2259/40079 (2013.01); B01D 2259/40081 (2013.01);
Abstract
A method of recovering paraxylene in a pressure swing adsorption unit with varying hydrogen purge pressures. The pressure swing adsorption zone is adapted to adsorb and desorb paraxylene based on the cycling of partial pressure in the zone. A first hydrogen purge is fed concurrent to the feed. A second hydrogen purge is countercurrent to the feed.