Liquefied gas supercooling system using mixed refrigerant

A liquefied gas supercooling system using a mixed refrigerant, comprising:

• a compressor that compresses the mixed refrigerant;
• a first separator that is provided at a rear end of the compressor to phase-separate the mixed refrigerant into a gaseous refrigerant and a liquid refrigerant;
• a first line through which the liquid refrigerant separated from the first separator flows through a first pressure reducing valve;
• a second line through which the gaseous refrigerant separated from the first separator flows through a first heat exchanger and a second separator;
• a second separator that is provided at a rear end of the first heat exchanger to phase-separate the mixed refrigerant separated from the first separator and passing through the second line into the gaseous refrigerant and the liquid refrigerant;
• a 2-1th line through which the gaseous refrigerant separated from the second separator flows through a second heat exchanger, a second pressure reducing valve, and a re-introduction into the second heat exchanger;
• a 2-2th line through which the liquid refrigerant separated from the second separator flows through a third pressure reducing valve;
• and
• a third line through which the mixed refrigerant joined from the first line, the 2-1th line, and the 2-2th line flows through the first heat exchanger, the compressor, and the first separator,
• wherein, in the first heat exchanger, the gaseous refrigerant separated from the first separator and flowing along the second line, and the mixed refrigerant flowing along the third line are heat-exchanged,
• in the second heat exchanger, the gaseous refrigerant separated from the second separator along the 2-1th line, the mixed refrigerant passing through the second pressure reducing valve along the 2-1th line, and the liquefied gas are heat-exchanged, and
• the liquefied gas is supercooled by the heat exchange in the second heat exchanger.