FIELD: gas industry.
SUBSTANCE: invention relates to methods of preparing hydrocarbon gases for transfer by low-temperature separation and can be used in oil and gas industry. Method of low-temperature gas separation consists in fact that three-stage separation of raw gas is performed to obtain condensate and gas at first stage, which is divided into two parts, one of which is cooled down by third separation stage gas under dephlegmation conditions to produce first gas and condensate flows, another is cooled down by condensates mixture under dephlegmation conditions to produce second gas and condensate flows, then first and second gas flows are mixed with formation of second separation stage gas, and first and second condensate flows are mixed with first separation stage condensate, throttled, mixed with third separation stage condensate and stabilized by indirect heating first separation stage gas second part counterflow to produce stabilized condensate and weathering gas, and second separation stage gas is throttled, mixed with weathering gas and separated at third stage with production of condensate and gas, which is heated and brought out from plant as commercial gas.
EFFECT: invention provides higher degree of heavy components extraction and increased output of commercial gas.
1 cl, 1 dwg
