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:
Dec. 29, 2015
Filed:
Mar. 01, 2013
Persefoni E. Kechagia, Williamsville, NY (US);
Neil A. Stephenson, East Amherst, NY (US);
Philip A. Barrett, Tonawanda, NY (US);
Hai Du, East Amherst, NY (US);
Steven J. Pontonio, Eden, NY (US);
Persefoni E. Kechagia, Williamsville, NY (US);
Neil A. Stephenson, East Amherst, NY (US);
Philip A. Barrett, Tonawanda, NY (US);
Hai Du, East Amherst, NY (US);
Steven J. Pontonio, Eden, NY (US);
Praxair Technology, Inc., Danbury, CT (US);
Abstract
The invention relates to a process for removing oxygen from liquid argon using a TSA (temperature swing adsorption) cyclical process that includes cooling an adsorbent bed to sustain argon in a liquid phase; supplying the adsorbent bed with a liquid argon feed that is contaminated with oxygen and purifying the liquid argon thereby producing an argon product with less oxygen contaminant than is in the initial liquid argon feed; draining the purified residual liquid argon product and sending purified argon out of the adsorbent bed. Regeneration of specially prepared adsorbent allows the adsorbent bed to warm up to temperatures that preclude the use of requiring either vacuum or evacuation of adsorbent from the bed.