FIELD: liquefied natural gas.
SUBSTANCE: gas liquefaction system includes a cooling system with mixed coolant and several pressure levels, which include cooling of compressed mixed coolant flow and separation of cooled compressed mixed coolant flow into vapor and liquid parts. Liquid part ensures cooling capacity of the first pre-cooling heat exchanger. Steam-like part is additionally compressed, cooled and condensed and used to ensure cooling capacity of the second pre-cooling heat exchanger. Gas of flash evaporation, separated from liquefied natural gas, is heated and combined with natural gas flow.
EFFECT: technical result is increased throughput capacity of natural gas liquefaction device.
19 cl, 1 tbl, 6 dwg
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