METHOD FOR COMPRESSING THE STRIPPED GAS (VARIANTS) Russian patent published in 2022 - IPC F25J3/00 

FIELD: gas industry.

SUBSTANCE: invention relates to low-temperature gas processing and can be used at gas processing plants and liquefied natural gas plants. The method includes heating of the stripped gas obtained by separating hydrocarbons C_2+higher from the dried gas during its low-temperature condensation, expanding and rectification, dividing the heated flow of stripped gas into two parts and compressing them. After compression, the second part of the flow of the stripped gas is cooled and then combined with the first stream of the stripped gas pre-cooled after compression, after which the combined flow of the stripped gas is directed for further use. In the second variant of the method, the compression of the second part of the flow of the stripped gas is carried out in at least two stages, while a part of the first flow of the stripped gas the pre-cooled after compression is connected to the second part of the flow of the stripped gas coming out of the first stage of compression, after which the combined flow of the stripped gas is fed to the second stage of compression and after cooling is directed to further usage.

EFFECT: increase in the reliability of the compressor equipment and reduction of operating costs.

6 cl, 7 dwg