METHOD OF OBTAINING CO, H AND METHANOL FROM SYNTHESIS GAS, IN PARTICULAR FROM THE WASTE GAS PRODUCTION OF ACETYLENE Russian patent published in 2017 - IPC C01B3/12 C01B3/50 C01B3/52 C01B3/56 F25J3/02 

FIELD: chemistry.

SUBSTANCE: invention relates to a process of the preparation of a product of methanol, product H₂ and a CO product from a synthesis gas containing H₂ and CO, in particular from the exhaust gas of acetylene production. The method includes separating a syngas stream into first and second partial synthesis gas streams where only the CO present in the first partial synthesis gas stream is converted to CO₂ and H₂ using steam, washing the first partial synthesis gas stream and a portion of the second partial synthesis gas stream, each in a separate column with an amine-containing washing agent, in particular for washing from CO₂, wherein in particular the washing agent is regenerated in a common column, wherein the methanol product stream is formed from one portion of the washed converted first partial synthesis gas stream and/or another portion of the unconverted second syngas stream so that the ratio (H₂-CO₂)/(CO+CO₂), which is required for the synthesis of methanol, is regulated in the methanol product stream, in particular in the range of 2.0 to 2.1, where the washed one part of the second unconverted partial synthesis gas stream is used to produce the CO product stream and the H₂ product stream and where the other portion of the washed first partial synthesis stream is synthesized, gas is used to produce the product stream H₂.

EFFECT: invention provides an efficient and economical preparation of three methanol products, H₂ and CO from a synthesis gas containing H₂ and CO.

10 cl, 1 dwg