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:
Jun. 07, 2016
Filed:
Feb. 27, 2013
Applicant:
L'air Liquide Societe Anonyme Pour L'etude ET L'exploitation Des Procedes Georges Claude, Paris, FR;
Inventors:
Bao Ha, San Ramon, CA (US);
Jean-Renaud Brugerolle, Houston, TX (US);
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F25J 3/00 (2006.01); F25J 3/04 (2006.01);
U.S. Cl.
CPC ...
F25J 3/04448 (2013.01); F25J 3/04 (2013.01); F25J 3/042 (2013.01); F25J 3/0409 (2013.01); F25J 3/0429 (2013.01); F25J 3/04054 (2013.01); F25J 3/04175 (2013.01); F25J 3/04296 (2013.01); F25J 3/04303 (2013.01); F25J 3/04381 (2013.01); F25J 3/04393 (2013.01); F25J 3/04454 (2013.01); F25J 2200/08 (2013.01); F25J 2200/10 (2013.01); F25J 2200/32 (2013.01); F25J 2200/50 (2013.01); F25J 2200/78 (2013.01); F25J 2205/30 (2013.01); F25J 2230/30 (2013.01); F25J 2230/40 (2013.01); F25J 2235/52 (2013.01); F25J 2245/02 (2013.01); F25J 2250/04 (2013.01); F25J 2250/52 (2013.01); F25J 2290/12 (2013.01);
Abstract
The present invention relates to a process and apparatus for the separation of air by cryogenic distillation. In particular, it relates to a process for separation of air using three cryogenic distillation columns for the production of gaseous oxygen. Certain embodiments of the invention are particularly efficient for the production of gaseous oxygen at pressures between 30 and 45 bars abs, in which the oxygen is produced by removing liquid oxygen from a distillation column, pressurizing the oxygen and vaporizing the pressurized liquid by heat exchange with air.