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:
Oct. 06, 2020
Filed:
Aug. 03, 2018
Applicant:
L'air Liquide, Societe Anonyme Pour L'etude ET L'exploitation Des Procedes Georges Claude, Paris, FR;
Inventors:
Patrice Cavagne, Le Perreux, FR;
Benedicte Dos Santos, Annet sur Marne, FR;
Yann-Pierrick Lemaire, Antony, FR;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F25J 3/04 (2006.01); F25J 3/02 (2006.01);
U.S. Cl.
CPC ...
F25J 3/04818 (2013.01); F25J 3/0295 (2013.01); F25J 3/0406 (2013.01); F25J 3/04012 (2013.01); F25J 3/0423 (2013.01); F25J 3/04024 (2013.01); F25J 3/04066 (2013.01); F25J 3/0486 (2013.01); F25J 3/04109 (2013.01); F25J 3/04127 (2013.01); F25J 3/04187 (2013.01); F25J 3/04193 (2013.01); F25J 3/04254 (2013.01); F25J 3/04296 (2013.01); F25J 3/04381 (2013.01); F25J 3/04393 (2013.01); F25J 3/04406 (2013.01); F25J 3/04412 (2013.01); F25J 3/04775 (2013.01); F25J 3/04787 (2013.01); F25J 3/04812 (2013.01); F25J 3/04824 (2013.01); F25J 3/04866 (2013.01); F25J 3/04896 (2013.01); F25J 2200/04 (2013.01); F25J 2215/42 (2013.01); F25J 2215/50 (2013.01); F25J 2230/22 (2013.01); F25J 2230/40 (2013.01); F25J 2240/04 (2013.01); F25J 2240/10 (2013.01); F25J 2240/42 (2013.01); F25J 2245/40 (2013.01); F25J 2280/10 (2013.01); F25J 2280/20 (2013.01); F25J 2290/12 (2013.01);
Abstract
Method for separating air by cryogenic distillation, wherein air is compressed in a compressor and is subsequently sent to a heat exchanger, with the air cooled in the exchanger being sent to a check valve downstream of the heat exchanger and subsequently to a turbine, the valve being positioned so that air from a short-circuiting duct cannot return to the exchanger from the compressor.