FIELD: chemistry.
SUBSTANCE: described is a method of extracting high- and low-boiling compounds from a crude fraction with high content of hydrocarbons, preferably from natural gas, according to which feedstock fraction (1) is partially condensed (E1, E2), rectification (T1) separating liquid fraction (8) with high content of high-boiling components (first separation stage). Formed gaseous fraction (10) depleted of high-boiling components is at least partially condensed (E4) and by rectification (T2) is separated into a liquid fraction with high content of methane (11) and gas fraction with high content of low-boiling components (12) (second separation stage). According to the invention, the first separation stage (T1) and the second separation stage (T2) are thermally isolated.
EFFECT: technical result is providing flexibility of production.
8 cl, 2 dwg
