FIELD: oil, gas and coke-chemical industries.
SUBSTANCE: invention relates to equipment for field preparation of natural gas and can be used in gas industry. Proposed is an installation including inlet and intermediate separators, a recuperative heat exchanger, a fractionating column with top and bottom heat and mass exchange sections, reducing devices and a fractionation unit. During the operation of the plant crude gas is separated in the inlet separator to obtain hydrocarbon condensate and gas, which is divided into two flows. First stream is supplied for cooling to lower heat and mass exchange section of column, mixed with second flow cooled in heat exchanger, is separated in an intermediate separator to obtain hydrocarbon condensate and gas, which is reduced and supplied to the middle part of the column, together with hydrocarbon condensates supplied into its lower part after reduction. From the bottom of the column, the demethanised condensate is fed into a fractionation unit from which liquid products are withdrawn in a given range, wherein a portion of the conditioned gas is supplied as a coolant. Prepared gas is removed from top of column, reduced, heated in upper heat exchange section of column, then in heat exchanger and removed.
EFFECT: technical result is increased output of hydrocarbons C2+ and elimination of use of external sources of low-temperature cold.
1 cl, 1 dwg
