FIELD: cryogenics.
SUBSTANCE: invention relates to cryogenic equipment and can be used for liquefaction of natural gas at gas distribution stations. Plant for liquefaction of natural gas includes a drying unit, 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 a compressor connected to the expander, as well as a cleaning unit, the main heat exchanger, a reducing device and a separator with lines for supply of return gas and LNG outlet. On the production gas line downstream the compressor, a "compressed production gas/return gas" heat exchanger is installed, as well as a "compressed production gas/low-pressure gas" heat exchanger and/or a cooler, after which a cleaning unit and a "compressed production gas/reduced process gas" heat exchanger are arranged. Return gas line downstream of the main heat exchanger is connected to the line of reduced process gas, and also connected to cleaning and drying units, which are connected by regeneration gases supply lines with the line of reduced process gas after the preliminary heat exchanger, forming a low pressure gas supply line.
EFFECT: increased yield of liquefied natural gas.
1 cl, 1 dwg
