METHOD OF PRODUCING CARBAMIDE AND CO AND APPARATUS FOR ITS IMPLEMENTATION Russian patent published in 2025 - IPC C07C273/04 C01C1/04 

FIELD: chemistry.

SUBSTANCE: invention relates to a method of producing carbamide and CO, comprising: obtaining ammonia from methane-containing gas in an ammonia production line and obtaining CO from a methane-containing gas in a CO production line, wherein a CO₂ stream is removed from the ammonia production line. In the CO production line, methane-containing gas is reformed to obtain converted gas, from which a CO₂ stream is first removed, and then CO is extracted. CO₂ stream from the CO production line is divided into a main part and a secondary part, the main part of the CO₂ stream from the CO production line is mixed with the CO₂ stream from the ammonia production line to obtain a mixed stream of CO₂, and a secondary part of the CO₂ stream from the CO production line is recycled for reforming in the CO production line. Mixed flow of CO₂ and ammonia is fed for synthesis of carbamide. Volumetric flow rate of CO₂ from the CO production line is controlled so as to ensure the ratio of the amount of ammonia to the amount of CO₂ in the mixed flow of CO₂ in range of 1.8-2.2. Invention also relates to an apparatus for producing carbamide and CO.

EFFECT: providing high energy efficiency and environmental friendliness of the process of combined production of carbamide and CO, enabling flexible control of the amount of products obtained.

31 cl, 2 dwg, 1 tbl