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.

Date of Patent:
Jan. 12, 2021

Filed:

Nov. 08, 2016
Applicant:

L'air Liquide, Société Anonyme Pour I'etude ET I'exploitation Des Procédés Georges Claude, Paris, FR;

Inventors:

Nicolas Chambron, Saint Maur des Fosses, FR;

Richard Dubettier-Grenier, La Varenne Saint Hilaire, FR;

Loic Joly, Paris, FR;

Vianney Meunier, Paris, FR;

Christophe Szamlewski, Combs la Ville, FR;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F25J 1/02 (2006.01); F25J 3/04 (2006.01); F25J 1/00 (2006.01);
U.S. Cl.
CPC ...
F25J 1/0022 (2013.01); F25J 1/005 (2013.01); F25J 1/0015 (2013.01); F25J 1/0037 (2013.01); F25J 1/0072 (2013.01); F25J 1/0202 (2013.01); F25J 1/0204 (2013.01); F25J 1/0234 (2013.01); F25J 1/0236 (2013.01); F25J 1/0288 (2013.01); F25J 3/04224 (2013.01); F25J 3/04278 (2013.01); F25J 3/04357 (2013.01); F25J 3/04393 (2013.01); F25J 3/04412 (2013.01); F25J 2245/42 (2013.01); F25J 2270/06 (2013.01); F25J 2270/16 (2013.01); F25J 2270/42 (2013.01);
Abstract

A method for producing liquefied natural gas and a stream of liquid nitrogen including step a): producing gaseous nitrogen in an air separation unit; step b): liquefying a stream of natural gas in a natural gas liquefaction unit including a main heat exchanger and a system for producing cold; step c): liquefying the nitrogen stream resulting from step a) in the main exchanger of the natural gas liquefaction unit in parallel with the liquefied natural gas in step b); wherein all the cold necessary for liquefying the stream of nitrogen and for liquefying the natural gas is supplied by the system for producing cold of the natural gas liquefaction unit.


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