LIQUEFIED NATURAL GAS INSTALLATION Russian patent published in 2019 - IPC F25J1/00 

FIELD: cryogenic equipment.

SUBSTANCE: invention relates to cryogenic equipment and can be used for liquefaction of natural gas at gas distribution stations. Natural gas liquefaction plant includes a high pressure gas line with a drying unit, which is divided into a production gas line and a process gas line with a preliminary heat exchanger and an expander. Production flow line is equipped with compressor connected with expander, cleaning unit, main heat exchanger, reducing device and separator. After the compressor installed are a "compressed production gas/return gas" heat exchanger, a “compressed production gas/gas heat exchanger” and/or a cooler, purification unit and heat exchanger "compressed production gas/reduced process gas". Return gas line is connected to the line of the reduced process gas forming a low-pressure gas line and is also connected to the cleaning and drying units connected by the regeneration gases supply lines to the reduced process gas line. LNG outlet line accommodates second reduction device and second separator equipped with lines for LNG output to consumer and separation gas supply to line of reduced process gas with second compressor.

EFFECT: increased yield of liquefied natural gas.

1 cl, 1 dwg