FIELD: cooling; chemical or physical processes.
SUBSTANCE: present invention relates to a method of cooling and separating hydrocarbon flow. Flow of hydrocarbon material (7) is passed through the first stage of cooling and separation to produce upper stream of steam enriched with methane (110), and flow of lean liquid to methane of liquid (10). Flow of lean liquid to methane (10) is passed to fractionation column (200) to obtain bottom condensate flow (210), upper stream enriched with C1-C2 (220) and average flow enriched with C3-C4 (230). Upper part of fractionation column (201) is cooled with condenser (206). Split flow (112) is obtained from upper stream of steam enriched with methane (110), cooled split flow (112') by cooling by expansion of volume of split flow (112). Cooling capacity is provided in upper part of fractionation column (201) by means of cooled split flow (112').
EFFECT: technical result is increased compactness and reduced weight of structure.
14 cl, 3 dwg
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