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. 09, 2008
Filed:
Jun. 17, 2005
Vijayaraghavan Srinivasan Chakravarthy, Williamsville, NY (US);
Richard John Jibb, Amherst, NY (US);
Michael James Lockett, Grand Island, NY (US);
John Henri Royal, Grand Island, NY (US);
Vijayaraghavan Srinivasan Chakravarthy, Williamsville, NY (US);
Richard John Jibb, Amherst, NY (US);
Michael James Lockett, Grand Island, NY (US);
John Henri Royal, Grand Island, NY (US);
Praxair Technology, Inc., Danbury, CT (US);
Abstract
A cryogenic air separation system wherein nitrogen vapor from a higher pressure column and oxygen liquid from a lower pressure column each pass down through a once-through main condenser in heat exchange relation and some but not all of the oxygen liquid is vaporized such that the oxygen liquid and vapor exit the condenser in a liquid to vapor mass flowrate ratio within the range of from 0.05 to 0.5 whereby the need for a recirculation pump to ensure avoidance of oxygen boiling to dryness is eliminated.