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:
Sep. 10, 2019
Filed:
Sep. 05, 2017
Maulik R. Shelat, Williamsville, NY (US);
Hanfei Tuo, East Amherst, NY (US);
Nick J. Degenstein, East Amherst, NY (US);
James R. Dray, Buffalo, NY (US);
Maulik R. Shelat, Williamsville, NY (US);
Hanfei Tuo, East Amherst, NY (US);
Nick J. Degenstein, East Amherst, NY (US);
James R. Dray, Buffalo, NY (US);
PRAXAIR TECHNOLOGY, INC., Danbury, CT (US);
Abstract
A system and method for neon recovery in a double column or triple column air separation unit is provided. The neon recovery system comprises a non-condensable stripping column configured to produce a liquid nitrogen-rich liquid column bottoms and a non-condensable gas containing overhead and one or more condensing units arranged to produce a crude neon vapor stream that contains greater than about 50% mole fraction of neon with the overall neon recovery exceeding 95%. In addition, there is minimal liquid nitrogen consumption and since much of the liquid nitrogen is recycled back to the lower pressure column of the air separation unit, there is minimal impact on the recovery of other products from the air separation unit.