FIELD: oil and gas industry.
SUBSTANCE: invention relates to gas processing industry and can be used for liquefaction of natural gas. Natural gas supply pipeline is connected after the mixer to the input of the compression unit, at the output of which is connected to the input of the liquefaction unit and passes in series the first counter-flow heat exchange apparatus, unit for drying complex cleaning unit, first auxiliary heat exchange apparatus, cleaning unit, additional heat exchange apparatus and second auxiliary and counterflow heat exchange apparatus and then through throttle-ejector is connected to input of phase separator, at outlet of which pipeline with liquid phase is connected to cryogenic tank. Upper outlet of cryogenic tank and inlet of throttle-ejector are connected by steam discharge pipeline. At the outlet of the second counterflow heat exchanger from the pipeline of the direct flow the additional flow pipeline is branched, which after exiting the liquefaction unit through the mixer is connected to the input of the compression unit. To the steam output of the phase separator there connected is a reverse flow pipeline, which at the outlet from the liquefaction unit is divided into two branches. First branch is connected to the input of the compression unit, and the second branch is connected to the input of the gas power station unit.
EFFECT: high reliability and independence of the complex and simplification of its design.
1 cl, 1 dwg
