FIELD: liquefaction of natural gas. SUBSTANCE: natural is liquefied when it is cooled by refrigerant of closed refrigerating cycle. After compression of refrigerant of closed cycle by first-stage compressor, it is directed for first heat exchanger for cooling followed by separation into gaseous and liquid fractions. Gaseous is again compressed in second-stage compressor and then it is fed to heat exchanger for cooling followed by separation into gaseous and liquid fractions. Liquid fractions are combined with gaseous fraction and are fed to heat exchanger after throttling for cooling and liquefying of natural gas. EFFECT: reduced power requirements. 22 cl, 3 dwg
