FIELD: gas industry.
SUBSTANCE: invention relates to equipment for field preparation of natural gas and can be used in gas industry. Proposed is a plant comprising two separators, two recuperative heat exchangers, a demethanizer, reducing devices and a fractionation unit. During operation of the plant, raw natural gas is separated in the first separator into a residue which is reduced and a gas which is divided into two streams, first is supplied for cooling into demethanizer heater, mixed with second flow cooled in first heat exchanger and separated in second separator into gas cooled in second recuperative heat exchanger, and a residue which are reduced and, together with the reduced residue of input separation, is fed into a demethanizer, from the bottom of which the demethanized condensate is fed into a fractionation unit, from which hydrocarbon fractions are withdrawn in a given range. Prepared gas removed from demethanizer top is reduced, heated in recuperative heat exchangers and discharged.
EFFECT: technical result is high output of heavy components and low power consumption.
1 cl, 1 dwg
