US 12,269,751 B2
Ammonia plant having a start-up furnace and method for producing ammonia
Maximilian Schaaf, Dortmund (DE); Dirk Meurer, Dortmund (DE); and Klaus Nölker, Dortmund (DE)
Assigned to thyssenkrupp Uhde GmbH, Dortmund (DE); and thyssenkrupp AG, Essen (DE)
Filed by thyssenkrupp Uhde GmbH, Dortmund (DE); and thyssenkrupp AG, Essen (DE)
Filed on Mar. 6, 2024, as Appl. No. 18/597,600.
Application 18/597,600 is a division of application No. 17/047,907, granted, now 11,939,226, previously published as PCT/EP2019/059649, filed on Apr. 15, 2019.
Claims priority of application No. 10 2018 108 989.9 (DE), filed on Apr. 16, 2018.
Prior Publication US 2024/0246830 A1, Jul. 25, 2024
Int. Cl. C01C 1/04 (2006.01)
CPC C01C 1/0452 (2013.01) [C01C 1/0482 (2013.01)] 6 Claims
 
1. A method of producing ammonia, comprising:
heating, with a start-up oven, a first synthesis gas for a first ammonia synthesis in a first reactor;
transferring the heated first synthesis gas to the first reactor for initiating a chemical reaction;
heating, with the start-up oven, a second synthesis gas for a second ammonia synthesis in a second reactor; and
transferring the heated second synthesis gas to the second reactor for initiating a chemical reaction, wherein a high-pressure synthesis of ammonia is carried out in the first reactor and a low-pressure synthesis of ammonia is carried out in the second reactor at a process pressure which is lower than the process pressure in the first reactor.