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:
Oct. 23, 2007
Filed:
Nov. 24, 2004
Eugene Joseph Karwacki, Jr., Orefield, PA (US);
Timothy Christopher Golden, Allentown, PA (US);
Bing Ji, Allentown, PA (US);
Stephen Andrew Motika, Kutztown, PA (US);
Thomas Stephen Farris, Bethlehem, PA (US);
Eugene Joseph Karwacki, Jr., Orefield, PA (US);
Timothy Christopher Golden, Allentown, PA (US);
Bing Ji, Allentown, PA (US);
Stephen Andrew Motika, Kutztown, PA (US);
Thomas Stephen Farris, Bethlehem, PA (US);
Air Products and Chemicals, Inc., Allentown, PA (US);
Abstract
A first aspect of a process of recovering xenon from feed gas includes: providing an adsorption vessel containing adsorbent having a Xe/Nselectivity ratio <75; feeding into the adsorption vessel feed gas having an initial nitrogen concentration >50% and an initial xenon concentration ≧0.5%; evacuating the adsorption vessel; and purging the adsorption vessel at a purge-to-feed ratio ≧10. The final xenon concentration is ≧15× the initial xenon concentration. A second aspect of the process includes providing an adsorption vessel containing adsorbent having a Xe Henry's law Constant ≧50 mmole/g/atm; feeding into the adsorption vessel feed gas having an initial nitrogen concentration >50% and an initial xenon concentration ≧0.5%; heating and purging the adsorption vessel to recover xenon having a final concentration ≧15× its initial concentration. Apparatus for performing the process are also described.