METHOD FOR PRODUCING LOW-CARBON AMMONIA FROM NATURAL GAS DECARBONIZED AMMONIA-3000 Russian patent published in 2023 - IPC C01C1/04 C01B3/02 C01B3/36 

FIELD: synthesis.

SUBSTANCE: ammonia synthesis methods that use natural gas as a raw material. The invention concerns a method for producing ammonia from natural gas; it consists in the fact that on a production line, natural gas and steam are heated and subjected to primary reforming. The resulting converted gas is subjected to secondary reforming using a steam-air-oxygen mixture, after which the resulting converted gas is sent for carbon dioxide conversion. The resulting synthesis gas is purified from carbon dioxide, then the purified synthesis gas is methanated, followed by ammonia synthesis. Purge gas from the ammonia synthesis process is used as fuel to heat natural gas and steam. In the fuel line, natural gas and steam are heated and subjected to primary reforming. The resulting converted gas is subjected to secondary reforming using a steam-air-oxygen mixture, after which the resulting converted gas is sent for carbon dioxide conversion. The resulting synthesis gas is purified from carbon dioxide, then the pressure of the purified synthesis gas is reduced and part of it is used as fuel for heating natural gas and steam in the fuel line and the other part together with purge gas is used as fuel for heating natural gas and steam on the production line.

EFFECT: ensuring the possibility of using the entire volume of synthesis gas on the production line for the synthesis of ammonia.

4 cl, 1 dwg