Method and system for treating a liquefied gas

A liquefied gas treatment system, comprising:

• a liquefied gas supply line connected from a liquefied gas storing tank to a source of demand;
• a pump provided on the liquefied gas supply line and configured to pressurize liquefied gas discharged from the liquefied gas storing tank;
• a heat exchanger provided on the liquefied gas supply line between the source of demand and the pump, and configured to exchange heat between the liquefied gas supplied from the pump and heat transfer media;
• a media heater configured to heat the heat transfer media;
• a media circulation line connected from the media heater to the heat exchanger;
• a calculator calculating a flow rate of the liquefied gas supplied to the heat exchanger on the basis of a driving degree of the pump;
• a controller configured to change a flow rate of the heat transfer media flowing into the media heater on the basis of a flow rate of the liquefied gas supplied to the heat exchanger or calories supplied to the heat transfer media by the media heater on the basis of a flow rate of the liquefied gas supplied to the heat exchanger;
• wherein the pump comprises a boosting pump and a high pressure pump, wherein the boosting pump is positioned between the liquefied gas storing tank and the high pressure pump or inside the liquefied gas storing tank;
• and
• wherein the boosting pump pressures the liquefied gas to 1-25 bar, and the high pressure pump pressures the liquefied gas to 200-400 bar.