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:
Mar. 11, 2025

Filed:

Mar. 08, 2023
Applicants:

Brian R. Kromer, Buffalo, NY (US);

Neil M. Prosser, Lockport, NY (US);

Jeremy M. Cabral, Clarence Center, NY (US);

James R. Handley, East Amherst, NY (US);

Inventors:

Brian R. Kromer, Buffalo, NY (US);

Neil M. Prosser, Lockport, NY (US);

Jeremy M. Cabral, Clarence Center, NY (US);

James R. Handley, East Amherst, NY (US);

Assignee:

LINDE GmbH, Pullach, DE;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F25J 3/04 (2006.01);
U.S. Cl.
CPC ...
F25J 3/04412 (2013.01); F25J 3/04084 (2013.01); F25J 3/0409 (2013.01); F25J 3/04096 (2013.01); F25J 3/04181 (2013.01); F25J 3/04187 (2013.01); F25J 3/04212 (2013.01); F25J 3/04357 (2013.01); F25J 3/04393 (2013.01); F25J 3/04496 (2013.01); F25J 3/04672 (2013.01); F25J 3/04036 (2013.01); F25J 2200/34 (2013.01); F25J 2205/60 (2013.01); F25J 2210/42 (2013.01); F25J 2230/52 (2013.01); F25J 2235/42 (2013.01); F25J 2245/42 (2013.01); F25J 2245/50 (2013.01);
Abstract

A nitrogen liquefier configured to be integrated with an argon and nitrogen producing cryogenic air separation unit and method of nitrogen liquefaction are provided. The integrated nitrogen liquefier and associated methods may be operated in at least three distinct modes including: (i) a nil liquid nitrogen mode; (ii) a low liquid nitrogen mode; and (iii) a high liquid nitrogen mode. The present systems and methods are further characterized in an oxygen enriched stream from the lower pressure column of the air separation unit is an oxygen enriched condensing medium used in the argon condenser.


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