Process for extracting gasoline from a gas containing condensable hydrocarbons

A process for extracting gasoline from a gas G containing condensable hydrocarbons, said process comprising:

• (a) refrigeration of a gas comprising methanol GM obtained from (d), producing a partially condensed fluid GL1;
• (b) separating said partially condensed fluid GL1, carried out in a three-phase separator, producing
• a first aqueous liquid phase A1 comprising methanol,
• a first liquid phase H1 of hydrocarbon(s) comprising methanol, and
• a gaseous phase G1;
• (c) first contacting a first portion of the gas G with said first aqueous liquid phase A1 comprising methanol, producing
• a second aqueous liquid phase A2 comprising methanol and depleted in methanol compared to said first aqueous liquid phase A1,
• a gaseous phase of gas to be treated comprising methanol GM′;
• (d) mixing said gaseous phase of gas to be treated comprising methanol GM′ with a second portion of the gas G, with optional adjustment of the methanol content of the mixture, producing a gas to be treated comprising methanol GM which is intended to be sent to a);
• (e) stabilizing all or part of said first liquid phase H1 of hydrocarbon(s) comprising methanol, producing a stabilized condensate GL2 and a C1-C4-rich gaseous phase G2 comprising methanol.