FIELD: oil and gas production.
SUBSTANCE: method for ethane fraction extraction by way of low-temperature rectification includes supply of hydrocarbon gas into rectification column for deethanising, low-temperature condensation of obtained vapours in heat-exchanger and their supply to reflux reservoir, discharging part of condensed fluid into rectification column for sprinkling and output of commercial products. The second part of condensed fluid in a form of distillation product - commercial ethane fraction is discharged from reflux reservoir, it is pressed to specified pressure, then it is evaporated due to chill recuperation and supplied to pipeline with specified pressure.
EFFECT: invention allows reduction of operation and capital costs.
2 cl, 1 dwg, 1 tbl
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