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:
Aug. 11, 2026

Filed:

Jul. 20, 2023
Applicants:

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

American Air Liquide, Inc., Fremont, CA (US);

Inventors:

Remi Tsiava, Saint Germain-les-Corbeil, FR;

Bhupesh Dhungel, Middletown, DE (US);

Assignees:

L'Air Liquide, Societe Anonyme Pour l'Etude et l'Exploitation, Des Procedes Georges Claude Paris, FR;

American Air Liquide, Inc., Fremont, CA (US);

Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C03B 5/237 (2006.01); B01D 53/56 (2006.01); B01D 53/79 (2006.01); C01B 3/047 (2026.01); C03B 5/225 (2006.01); F23J 15/04 (2006.01); F23L 15/04 (2006.01); F27D 17/10 (2025.01); F23J 15/06 (2006.01); F27D 17/00 (2006.01);
U.S. Cl.
CPC ...
C03B 5/237 (2013.01); B01D 53/56 (2013.01); B01D 53/79 (2013.01); C01B 3/047 (2013.01); C03B 5/225 (2013.01); F23J 15/04 (2013.01); F23L 15/045 (2013.01); F27D 17/10 (2025.01); B01D 2251/2062 (2013.01); B01D 2257/404 (2013.01); C01B 2203/0272 (2013.01); C01B 2203/0277 (2013.01); C01B 2203/0811 (2013.01); C01B 2203/0827 (2013.01); C01B 2203/0833 (2013.01); C01B 2203/1064 (2013.01); F23C 2900/9901 (2013.01); F23G 2900/50201 (2013.01); F23G 2900/50202 (2013.01); F23J 15/06 (2013.01); F23J 2215/50 (2013.01); F27D 17/00 (2013.01);
Abstract

A method for operating a furnace, the method including the steps of: combusting fuel with oxidant, thereby generating thermal energy and fumes, heating the furnace with a first part of the thermal energy generated in step a, evacuating the generated fumes from the furnace at a temperature of at least 900° C., the evacuated fumes containing a second part of the thermal energy generated in step a, and using the second part of the thermal energy generated in step a for heating the oxidant and as a heat source for cracking ammonia in a cracker into a mixture including hydrogen, nitrogen and un-cracked ammonia, at least part of the mixture produced in step d-ii being combusted as fuel in step a with at least part of the heated oxidant produced in step d-i.


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