METHOD FOR TREATING NATURAL GAS FROM DEPOSITS IN THE FAR NORTH Russian patent published in 2021 - IPC F25J3/00 

FIELD: gas industry.

SUBSTANCE: method includes primary separation of reservoir gas, resulting in unstable primary separation condensate and primary separation gas, supply of methanol to the primary separation gas and low-temperature separation thereof, resulting in unstable low-temperature separation condensate, water and methanol solution and low-temperature separation gas, consecutive heating, compression and cooling of the low-temperature separation gas, extraction of water, methanol, C₅₊ hydrocarbons from the low-temperature separation gas, resulting in commercial gas, and cooling of the commercial gas with the low-temperature separation gas. Low-temperature separation is conducted at a temperature of minus 10 ÷ minus 15°C. Extraction of water, methanol, C₅₊ hydrocarbons from the low-temperature separation gas is conducted by adsorption. To regenerate adsorbents, part of the commercial gas is used, and the regeneration gas is directed for mixing with the formation gas.

EFFECT: increase in the efficiency of treating natural gas, additional extraction of liquid hydrocarbons, reduction in the methanol losses, and reduction in the capital and operating costs.

1 cl, 1 dwg, 1 tbl