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:
Jan. 04, 2011
Filed:
Feb. 01, 2008
Roger Dean Whitley, Allentown, PA (US);
Edward Landis Weist, Jr., Macungie, PA (US);
Annemarie Ott Weist, Macungie, PA (US);
Steven Ray Auvil, Macungie, PA (US);
Roger Dean Whitley, Allentown, PA (US);
Edward Landis Weist, Jr., Macungie, PA (US);
Annemarie Ott Weist, Macungie, PA (US);
Steven Ray Auvil, Macungie, PA (US);
Air Products and Chemicals, Inc., Allentown, PA (US);
Abstract
Method for argon recovery that comprises (a) providing a feed gas mixture comprising argon and nitrogen; (b) contacting at least a portion of the feed gas mixture with a nitrogen-selective adsorbent in a cyclic pressure swing adsorption process and adsorbing at least a portion of the nitrogen on the adsorbent in a first pressure range above 100 psia to provide a purified argon product and an adsorbent comprising adsorbed nitrogen; and (c) desorbing the adsorbed nitrogen in one or more regeneration steps effected in a second pressure range between atmospheric pressure and a super-atmospheric pressure below any pressure in the first pressure range, inclusive; wherein the cyclic pressure swing adsorption process is effected at an average operating temperature of at least about 0° C.