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:
Nov. 06, 2018
Filed:
Oct. 23, 2013
Praxair Technology, Inc., Danbury, CT (US);
David Parsnick, Shanghai, CN;
James P. Meagher, Buffalo, NY (US);
John F. Billingham, Getzville, NY (US);
Gerald A. Paolino, Lancaster, NY (US);
David Parsnick, Amherst, NY (US);
James Meagher, Buffalo, NY (US);
Gerald A. Paolino, Lancaster, NY (US);
John F. Billingham, Getzville, NY (US);
PRAXAIR TECHNOLOGY, INC., Danbury, CT (US);
Abstract
A method and backup system for backing up a supply oxygen in an air separation plant in which during normal operation, a stream of oxygen-rich liquid is pumped through a main flow path, extending from a surge tank to a heat exchanger, to deliver an oxygen product. The surge tank receives the oxygen-rich liquid from a bottom region of the lower pressure column of the plant. Additionally, during normal operations, a stream of the oxygen-rich liquid is also introduced to a reserve storage tank through a backup flow path. During a transient operation, where the air separation plant has ceased operation, the surge tank is isolated and liquid is pumped from the surge tank through an auxiliary flow path to an auxiliary vaporizer to continue the supply of the oxygen product and the surge tank is replenished with oxygen-rich liquid previously stored in the reserve storage tank.