Methanol

Details Methanol Methanol

C - Chemistry, Metallurgy

07

C

260/638

C07C 29/12 (2006.01) C07C 31/02 (2006.01)

Patent

CA 1110664

ABSTRACT OF THE DISCLOSURE In a process for producing methanol by generating methanol synthesis gas, generating high pressure steam by heat exchange with a hot gaseous stream produced in the course of synthesis gas generation, bringing synthesis gas to synthesis gas pressure by means of a compressor powered from an engine in which such high pressure steam is let down, and synthesising methanol over a catalyst at an outlet temperature of under 300°C, thermal efficiency is improved by transferring heat evolved in the synthesis to water maintained under a pressure too high to permit boiling and the resulting hot water is used as feed for the high pressure steam generation. If the methanol synthesis is of the recirculatory type and involves a purge, the purge gas is heated and let down in pressure in an expansion engine.

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