FIELD: oil and gas industry.
SUBSTANCE: method includes feeding compressed natural gas stream from high pressure main pipeline from gas distribution station inlet and dividing the flow into production and process streams. The process stream is expanded in expander with performance of an operation, fed to main preliminary heat exchanger, and supplied to the consumer at low pressure. The production stream is cooled by heating the process gas to form gas-liquid mixture further cooled and expanded in a throttle valve, at which outlet the liquid phase is separated by separator. The liquid phase is sent to the storage facility or to consumers of liquefied natural gas. The remaining part of the stream is mixed with the main process stream and sent to cold inlet of the heat exchanger. The production stream is subjected to purification and drying in a block of regenerative heat exchangers due to crystallization of CO2 on surface of their plates. After passing through the process stream, CO2 is dissoluted and removed with the flow of gas supplied to the consumers in the low pressure line.
EFFECT: increase the efficiency of the production process.
1 cl, 1 dwg
