METHOD NATURAL GAS PROCESSING Russian patent published in 2018 - IPC F25J3/02 

FIELD: gas industry.

SUBSTANCE: invention relates to the gas industry and may be used in gas condensate fields for the processing of natural gas and its preparation for transportation. Hydrocarbon gas processing method is that the hydrocarbon gas is subjected to primary separation, cooling, secondary separation, and again cooling. Absorbent absorbs hydrocarbons C_5+B using a liquid hydrocarbon absorbent, as a liquid hydrocarbon stream obtained by primary separation of natural gas or a mixture of said liquid hydrocarbon stream with a liquid hydrocarbon stream, obtained by secondary separation, and / or with a liquid hydrocarbon stream carried off the absorber. Liquid hydrocarbon absorbent is prepared, after which the content of the hydrocarbon fraction having a boiling point higher than 120 °C and the end of boiling is not higher than 170 °C, is at least 85 % of the total mass. Gas carried off the absorber is cooled and its final separation and heating are carried out.

EFFECT: technical result is to improve the quality of natural gas processing by increasing the recovery of hydrocarbons C_5+B.

4 cl, 2 dwg