FIELD: chemistry.
SUBSTANCE: invention relates to a method of treating hydrocarbon feedstock containing hydrogen and hydrocarbons, including C1-C4 hydrocarbons. Method includes the following steps: a) separation of hydrocarbon material into gas phase (6) and liquid phase (4) containing hydrocarbons; b) cooling liquid phase (4) coming from step a) to temperature less than or equal to 45 °C by cooling device (15); c) performing the first repeated contact of the cooled liquid phase (4) with gas phase (6) in column (16) operating in countercurrent mode in order to separate the first gas stream (17) enriched with hydrogen and the first liquid stream of hydrocarbons (18); note here that prior to cooling step liquid phase from step a) is pre-cooled by heat exchange in heat exchanger (11) whereto first gas flow and/or first liquid hydrocarbon stream fed from step c) are fed.
EFFECT: technical result is higher extraction of hydrogen and hydrocarbons C3 and C4.
11 cl, 3 dwg, 4 tbl, 3 ex
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