FIELD: heating.
SUBSTANCE: invention is related to methods for fractionating of natural gas and may be used in oil and gas refining industry. Method for fractionating of natural gas includes adsorption drying and cleaning of gas, further low temperature condensation and rectification of dried and cleaned gas with extraction of ethane fraction, long fraction of light hydrocarbons, helium concentrate, methane fractions of medium and low pressures (MFMP and MFLP). Part of dried and cleaned gas prior to its low temperature condensation and rectification is discharged and mixed with flow of MFLP in ratio of 2.3-2.5:1, which provides for combustion heat at standard conditions of at least 32.5 MJ/m3.
EFFECT: provides for utilisation of produced methane fraction of low pressure by its application in the form of fuel gas.
1 dwg, 1 tbl, 1 ex
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