Removal of gaseous contaminants from argon

Details Removal of gaseous contaminants from argon Removal of gaseous contaminants from argon

2011-01-04

2011-01-04

Hopkins, Robert A (Department: 1797)

Gas separation: processes

Solid sorption

Including reduction of pressure

C095S130000, C095S148000, C096S130000, C422S169000

Reexamination Certificate

active

07862645

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.

REFERENCES:
patent: 4859217 (1989-08-01), Chao
patent: 5106399 (1992-04-01), Fisher
patent: 5125934 (1992-06-01), Krishnamurthy et al.
patent: 5220797 (1993-06-01), Krishnamurthy et al.
patent: 5254154 (1993-10-01), Gauthier et al.
patent: 5706674 (1998-01-01), Hsiung et al.
patent: 5730003 (1998-03-01), Nguyen et al.
patent: 6315818 (2001-11-01), Monereau
patent: 6336956 (2002-01-01), Moreau et al.
patent: 6500235 (2002-12-01), Zhong et al.
patent: 6838066 (2005-01-01), Rao
patent: 6923844 (2005-08-01), Urakami et al.
patent: 6955711 (2005-10-01), Kawai et al.
patent: 7258725 (2007-08-01), Ohmi et al.
patent: 7501009 (2009-03-01), Graham et al.
patent: 2004/0237789 (2004-12-01), Baksh et al.
patent: 2006/0165573 (2006-07-01), Ohmi et al.
patent: 197 08 025 (1997-09-01), None
patent: 0 538 140 (1993-04-01), None
patent: 0 832 678 (1998-04-01), None
patent: 1 023 934 (2000-08-01), None
patent: 1 219 339 (2002-07-01), None
patent: 1 495 793 (2005-12-01), None
patent: 1 832 330 (2007-09-01), None
patent: 2 227 685 (1990-08-01), None
patent: 62 119104 (1987-05-01), None
patent: 6-24962 (1994-04-01), None

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