AUTONOMOUS PLANT OF LIQUEFIED NATURAL GAS CLEANING (VERSIONS) Russian patent published in 2017 - IPC F25J3/02 

FIELD: oil and gas industry.

SUBSTANCE: plant contains a raw liquefied natural gas (LNG) heater, a compressor, a clean LNG tank separator with a separated vapor discharge line and a rectification column with a bottom liquid outlet branch pipe. The pipeline for discharging the heating medium from the raw LNG heater is connected to the supply line of the clean LNG tank separator and to the reflux liquid supply line to the rectification column. In the first, second and third embodiment, the plant comprises of an evaporator, and partially condensed compressed steam is used as the heating medium in the raw LNG heater. The cooling medium of the rectification column evaporator is the bottom liquid of the rectification column.

EFFECT: improving the quality of liquefied natural gas cleaning.

4 cl, 4 dwg