METHOD AND DEVICE FOR EXTRACTING PRODUCTS FROM SYNTHETIC GAS Russian patent published in 2010 - IPC F25J3/00 

FIELD: chemistry.

SUBSTANCE: method of extracting a stream of carbon monoxide gas from a stream of initial substances is realised by separating the stream on a cryogenic gas-separation installation by cooling it through indirect heat exchange with heated process streams and single-step partial condensation with subsequent low-temperature fractionation of the CO rich and H₂-containing condensate in a separation column by evaporating and/or heating cold separation products and compressing CO gas to pressure of the end product. Liquid CO from the still of the separation column is supercooled through heat exchange with the heated process streams with subsequent separation into several separate streams which undergo expansion preferably with reduction of the pressure of each to its own distinct level, evaporated through heat exchange with cooled process streams, heated and fed in gaseous state into a compressor or directly into the stream of obtained CO. The liquid CO extracted from the still of the separation column is preferably supercooled such that its during its expansion to the lowest pressure, only a liquid-gas mixture which is separated in a separator is formed.

EFFECT: cheaper production of CO.

21 cl, 1 dwg