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:
Mar. 26, 2013
Filed:
Apr. 15, 2010
Philip Bruce Henderson, Allentown, PA (US);
Patrick Michael Colleran, Macungie, PA (US);
Forrest Eli Hulbert, Macungie, PA (US);
Philip Bruce Henderson, Allentown, PA (US);
Patrick Michael Colleran, Macungie, PA (US);
Forrest Eli Hulbert, Macungie, PA (US);
Air Products and Chemicals, Inc., Allentown, PA (US);
Abstract
During the conventional temperature swing adsorption (TSA) process, NFco-adsorbed with the impurities is vented during regeneration. This invention is a novel TSA cycle in which the co-adsorbed NFis recovered. In this novel TSA cycle, a control scheme is used to stop the adsorption prior to the saturation of the adsorber with impurities and use a recovery purge gas (either co-current or counter-current) to release the co-adsorbed NFoff the saturated adsorber. The effluent of the inert purge gas can be combined with the effluent of the on-stream vessel or can be recycled to the feed of the on-stream vessel. 10%-100% of the co-adsorbed NFis recovered and made available as product in this novel TSA cycle. Thus the overall process yield of NFis increased. The removing of the co-adsorbed NFfrom the adsorber also prevents adsorber degradation thus prolonging the useful life of the adsorber.