METHOD OF METHANOL RECOVERY FROM GAS-VAPOUR MIXTURE AT ITS STORAGE AND TRANSSHIPMENT Russian patent published in 2014 - IPC C07C31/04 B01D5/00 

FIELD: oil and gas industry.

SUBSTANCE: invention is related to the method of methanol recovery from gas-vapour mixture at its storage and transhipment and may be used in chemical industry, petrochemical industry, oil and gas producing and processing industries. The method includes extraction of vapours from the gas-vapour mixture in the plant vessel, cooling of the gas-vapour mixture and condensation of vapours in the vapour-condensing unit, condensate return to the vessel and emptying of the vessel. At that cooling of the gas-vapour mixture in the vapour-condensing unit consisting of a vessel for cooled methanol and a packed column installed on it is made to counter-flow interaction of the gas-vapour mixture containing vapours of methanol cooled up to the temperature within the range of minus 25 up to minus 36°C at pressure close to atmosphere pressure when condensed methanol is returned to the vessel for cooled methanol.

EFFECT: method allows increasing quality of storage due to recovery and return of methanol vapours to the vessel.

1 dwg, 1 tbl