METHOD OF PREPARING HYDROCARBON GAS FOR TRANSPORTATION Russian patent published in 2016 - IPC B01D19/00 

FIELD: oil industry.

SUBSTANCE: invention relates to oil industry, particularly to treatment of hydrocarbon gas using low-temperature process, and can be used in the processes of field preparation for transportation of gas-condensate fields products. Method of preparing hydrocarbon gas for transportation, comprising feeding a gas stream from well clusters for primary separation, using the gas stream to desorb methanol from a water-methanol solution, feeding methanol into gas stream, cooling gas stream with air, hydrocarbon condensate, gas in two steps, secondary separation of gas flow is performed, methanol is fed into gas stream, gas stream is cooled with gas, and due to pressure reduction final separation of gas stream is performed, heating in three stages said separated gas with gas stream and outputting gas from apparatus, mixing liquid phase after primary separation of gas stream and aqueous solution after desorption of methanol is fed for separation from hydrocarbon gas condensate and aqueous solution, feeding gas into gas stream before final separation, dividing aqueous solution into two parts, outputting one part of aqueous solution from apparatus, hydrocarbon condensate is delivered for degassing, feeding liquid phase after final separation for separation into hydrocarbon condensate, gas and water-methanol solution, returning gas for repeated final separation together with gas stream, feeding water-methanol solution into gas flow for desorption of methanol, feeding aqueous solution from gas stream, heating hydrocarbon condensate with gas stream, feeding into hydrocarbon condensate a second part of aqueous solution, using aqueous solution to absorb methanol from hydrocarbon condensate, feeding liquid phase for separation into hydrocarbon condensate, low pressure gas and water-methanol solution, hydrocarbon condensate is mixed with hydrocarbon condensate, fed for degassing, water-methanol solution is introduced into water-methanol solution fed for desorption of methanol, low pressure gas is fed for ejection into gas stream, degassing hydrocarbon condensate, outputting hydrocarbon condensate from apparatus, feeding low pressure gas into gas for degassing.

EFFECT: invention is aimed at reducing consumption of hydrate formation inhibitor - methanol due to reduction of its losses with unstable condensate.

1 cl, 1 dwg, 1 tbl