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:
Sep. 03, 2024
Filed:
Feb. 08, 2022
Applicant:
Air Products and Chemicals, Inc., Allentown, PA (US);
Inventors:
Kamlesh Ghodasara, Borehamwood, GB;
Maulik R. Shelat, Macungie, PA (US);
Paul Higginbotham, Guildford, GB;
Shubhra Jyoti Bhadra, Macungie, PA (US);
Timothy C. Golden, Nevez, FR;
Assignee:
Air Products and Chemicals, Inc., Allentown, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01B 3/50 (2006.01); B01D 53/02 (2006.01);
U.S. Cl.
CPC ...
C01B 3/508 (2013.01); B01D 53/02 (2013.01); B01D 2257/102 (2013.01); B01D 2257/502 (2013.01); B01D 2257/504 (2013.01); B01D 2257/7025 (2013.01); B01D 2257/80 (2013.01); C01B 2203/042 (2013.01);
Abstract
A hydrogen feed stream comprising one or more impurities selected from the group consisting of nitrogen, argon, methane, carbon monoxide, carbon dioxide, oxygen, and water, is contacted with liquid hydrogen in a cryogenic wash column (CWC) process that produces pure hydrogen with high overall recovery. The waste liquid stream leaving the CWC may be used to improve the performance of upstream hydrogen processing steps.