METHOD OF METHANOL PRODUCTION Russian patent published in 2007 - IPC C07C31/04 C07C29/151 

FIELD: chemical industry; methods of production of methanol.

SUBSTANCE: the invention is pertaining to method of production of methanol. The method provides for: mixing of the main stream of the synthesis gas with the circulating gas; partition of the gained mixture into two streams; heating up of one of the streams of the gas mixture up to the starting temperature of the synthesis; the passage of the both streams through the reactor of the methanol synthesis, consisting of four or five adiabatic catalyst layers; at that the heated stream is fed to the inlet of the first layer and the cold stream is divided and fed in the form of the cold by-passes between the layers of the catalyst; refrigeration of the reacted gas; separation of the condensed crude methanol and division of the non-condensed gas stream into the blowdown gas, which is withdrawn from the system, and the gas stream, which is compressed in the compressor and fed to the circulation. At that in the existing by-passes of the last two layers of the catalyst they introduce the additional stream of the synthesis gas, and the total percent of the additional stream of the synthesis gas introduced into existing by-passes of two last catalyst beds is introduced into the existing by-passes of the last two catalyst layers, in respect to the main stream of the synthesis gas varies from 36.3 % at the high activity of the catalyst up to 3.6 % at the lowered activity of the catalyst and the distribution of the additional stream of the synthesis gas between the layers varies from 10 up to 90 %. The method allows the fullest usage of the catalyst activity in its last layers.

EFFECT: the invention ensures the fullest usage of the catalyst activity in its last layers.

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