FIELD: oil and gas industry.
SUBSTANCE: proposed method for processing natural hydrocarbon gas with admixture of water, carbon dioxide, hydrogen sulfide and methanol, containing the stage of low-temperature adsorption drying and purification of natural hydrocarbon gas from methanol and a stage of cryogenic separation of natural hydrocarbon gas to produce helium, nitrogen, methane, ethane fractions and the general fraction of light hydrocarbons. At the stage of low-temperature adsorption drying and purification of natural hydrocarbon gas from methanol, as the stripping agent at the high temperature regeneration of the adsorbent, as the heating agent at the high temperature regeneration of the adsorbent and refrigerant, while the adsorbent cooling upto the adsorption temperature, use the part of methane or ethane fraction.
EFFECT: invention allows to prepare natural hydrocarbon gas for the cryogenic separation.
13 cl, 5 dwg
