A TREATMENT SYSTEM OF LIQUEFIED NATURAL GAS

摘要

The present invention relates to an LNG treatment system comprising: a plurality of evaporation gas supply compressors installed on an evaporation gas supply line connected to an LNG storage tank by one end in order to pressurize evaporation gas from the LNG storage tank and supply the gas to a first demander; an evaporation gas recovery line of which one end is connected between the evaporation gas compressors on the evaporation gas supply line and of which the other end is connected to a temporary storage tank; a BOG/BOG heat exchanger arranged at a point where the evaporation gas supply line between the LNG storage tank and the evaporation gas compressors meets the evaporation gas recovery line between the evaporation gas compressors and the temporary storage tank; and a cold supply device to produce a low temperature heat source by using a high temperature heat source from an exhaust gas discharged from the first demander or a high temperature heat source from evaporation gas compressed in the evaporation gas compressors. According to the present invention, the LNG treatment system has increased the LNG or evaporation gas treating efficiency, thereby reducing fuel consumption and maximizing energy efficiency.