A TREATMENT SYSTEM OF LIQUEFIED GAS

摘要

The present invention relates to a treatment system of liquefied gas. The treatment system of liquefied gas comprises: an evaporation gas supply line to supply evaporation gas produced in a liquefied gas storage tank to a gas user; a liquefied gas supply line to supply liquefied gas stored in the liquefied gas storage tank to the gas user; and a control unit to control supply of the evaporation gas or the liquefied gas. The control unit preferentially supplies the evaporation gas to the gas user if a produced amount of the evaporation gas is larger than an amount needed by the gas user, supplies the liquefied gas to the gas user if an amount consumed by the gas user is larger than a supply amount of the evaporation gas, preferentially supplies the liquefied gas to the gas user if the produced amount of the evaporation gas is smaller than the amount needed by the gas user, and supplies the evaporation gas to the gas user if the amount consumed by the gas user is larger than a supply amount of the liquefied gas, or an internal pressure of the liquefied gas storage tank is higher than or equal to a prescribed pressure. The treatment system of liquefied gas in accordance with the present invention comprises the control unit which efficiently controls the evaporation gas and the liquefied gas in parallel to frequently operate a liquefied gas treatment device and an evaporation gas treatment device to stably drive the system in an unexpected situation, maximize system flexibility, and improve reliability of the treatment system of liquefied gas.