FIELD: technological processes.
SUBSTANCE: invention relates to equipment for separation of gaseous mixtures. Described is an apparatus for separating hydrocarbons from a gas mixture, comprising a recuperative heat exchanger and a fractionating column arranged on the crude gas line, as well as reducing devices, in which the fractionating column is equipped with a heat-mass-exchange section in the reinforcing portion and a heater in the stripping part, which is located on bypass line of recuperative heat exchanger, bottom of the column is equipped with a line for outputting hydrocarbon fraction C1+, on which a reducing device and a recuperative heat exchanger are located, and the top of the column is equipped with a line for outputting a mixture of non-condensed gases, on which reducing device, heat-mass exchange section and recuperative heat exchanger are successively located. Described is an apparatus for separating hydrocarbons from a gas mixture, comprising a recuperative heat exchanger and a fractionating column arranged on a feed gas line, as well as a separator and reducing devices, in which the fractionating column is equipped with a heat-mass-exchange section in the reinforcing portion and a heater in the stripping part, which is located on bypass line of recuperative heat exchanger, bottom of column is equipped with hydrocarbon fraction discharge line C1+, on which there are a reducing device and a separator, equipped with a liquefied natural gas outlet line and a separation gas discharge line with a recuperative heat exchanger connected to the raw gas line, and the top of the column is equipped with a line for outputting a mixture of non-condensed gases, on which there are successively arranged a reducing device, a heat-mass exchange section and a recuperative heat exchanger.
EFFECT: simplified installation and increased output of commercial gas.
2 cl, 2 dwg
