Liquefaction system of gas and ship having the same

摘要

The present invention relates to a gas re-liquefaction system and a ship including the same, comprising: a liquefied part for liquefying boil-off gas using a mixed refrigerant, the liquefied part, a mixed refrigerant compressor for compressing the mixed refrigerant; A re-liquefier for liquefying the boil-off gas by exchanging heat with the mixed refrigerant; A pressure reducing valve for decompressing the mixed refrigerant compressed in the mixed refrigerant compressor and re-introducing it into the reliquefier; And a suction unit which sucks the liquid mixed refrigerant discharged from the reliquefier through the liquid mixed refrigerant depressurized by the pressure reducing valve, and further depressurizes the reduced liquid mixed refrigerant.