FIELD: storage of liquefied gases. SUBSTANCE: system plant for production of liquid nitrogen consists of a Stirling machine, fractionating tower and a heat exchanger for freezing out of air moisture and carbon dioxide. The liquid nitrogen drain line has a Dewar flask, high-pressure pump and a check valve. The nitrogen vapor overcondensation line has a safety valve, throttle valve, expansion vessel and an actuator valve, which connect the plant for production of liquid nitrogen and the heat-insulated vessel with liquid nitrogen, forming a closed nitrogen circuit. EFFECT: enhanced efficiency of systems and reduced material costs at liquefaction and storage of liquefied gases. 1 dwg
