FIELD: technological processes.
SUBSTANCE: invention relates to gas liquefaction technology. Natural gas liquefaction system 1 includes installation of 2 pressure reduction of raw gas, first heat exchanger 14 for heating by heat exchange with the raw gas refrigerant with reduced pressure, heating device 8 for heating the raw gas that is supplied from the first heat exchanger. System 1 also comprises installation 3 for removing acid gas from the feed gas that has been heated, second heat exchanger 16 for cooling the feed gas from which the acid gas component has been removed in installation 3, using heat exchange with the refrigerant used in the first heat exchanger, and liquefaction unit 6 for further cooling the feed gas.
EFFECT: use of the invention makes it possible to raise the temperature of the feed gas with a minimum additional energy supplied from the outside, so that the acid gas component can be removed from the feed gas after the pressure in it is reduced.
4 cl, 1 dwg
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