FIELD: technological processes.
SUBSTANCE: invention relates to natural gas treatment plants, namely, to design of devices for low-temperature separation and cold recovery in low-temperature gas separation plants and can be used in gas industry. Low-temperature separation and cold recuperation unit is equipped with gas feed lines of input separation and blowing gas, commercial gas discharge lines and heated blown reduced condensate of low-temperature separation, includes low-temperature separation unit, device for reducing condensate of low-temperature separation and separator of reduced condensate. Unit has fractional column for inlet separation gas equipped with three heat-mass-exchange sections for fractionating inlet separation gas due to cooling by low-temperature separation gas and condensate, as well as low-temperature separation condensate reduced to stabilisation pressure.
EFFECT: higher quality of commercial gas.
3 cl, 1 dwg
