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:
Jul. 03, 2018
Filed:
Mar. 01, 2016
Applicants:
Hai Du, East Amherst, NY (US);
Neil M. Prosser, Lockport, NY (US);
Yang Luo, Amherst, NY (US);
Neil A. Stephenson, East Amherst, NY (US);
Inventors:
Hai Du, East Amherst, NY (US);
Neil M. Prosser, Lockport, NY (US);
Yang Luo, Amherst, NY (US);
Neil A. Stephenson, East Amherst, NY (US);
Assignee:
PRAXAIR TECHNOLOGY, INC., Danbury, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F25J 1/00 (2006.01); F25J 3/04 (2006.01); B01D 53/047 (2006.01);
U.S. Cl.
CPC ...
F25J 3/04733 (2013.01); B01D 53/047 (2013.01); F25J 3/0409 (2013.01); F25J 3/04096 (2013.01); F25J 3/04103 (2013.01); F25J 3/04296 (2013.01); F25J 3/04303 (2013.01); F25J 3/04412 (2013.01); F25J 3/04678 (2013.01); F25J 3/04739 (2013.01); F25J 3/04884 (2013.01); F25J 3/04939 (2013.01); B01D 2253/102 (2013.01); B01D 2253/108 (2013.01); B01D 2253/116 (2013.01); B01D 2257/11 (2013.01); F25J 2205/02 (2013.01); F25J 2205/60 (2013.01); F25J 2245/58 (2013.01); F25J 2250/02 (2013.01); F25J 2270/02 (2013.01); F25J 2290/34 (2013.01);
Abstract
A method and apparatus for argon recovery in which an impure argon stream is separated from air within a cryogenic air separation unit having a divided wall argon rejection/rectification column. The resulting argon stream is subsequently recovered and purified within an integrated pressure swing adsorption system to produce product grade argon.