RELIQUEFACTION SYSTEM OF AN LNG AND LPG SHIP, CAPABLE OF EFFICIENTLY COOLING AN LPG FUEL, AND A SUPPLYING METHOD THEREOF

摘要

PURPOSE: A reliquefaction system of an LNG and LPG ship and a supplying method thereof are provided to perform a stable reliquefaction work and to utilize a part of evaporation gas, which is discharged from an LNG evaporation gas compressor, as a fuel for a duel fuel diesel electric (DFDE) engine.;CONSTITUTION: A reliquefaction system of an LNG and LPG ship includes an LNG evaporative gas cycle line (110), an LNG evaporative gas compressor (120), an engine fuel supply line (130), an LNG evaporative gas reliquefaction unit (140), an LPG evaporative gas cycle line (210), an LPG evaporative gas compressor (220), an LPG evaporative gas reliquefaction unit (230), and an LNG liquid fuel supply unit. The LNG evaporative gas compressor is installed on the LNG evaporative gas cycle line. An evaporative gas in an LPG storage tank (200) circulates through the LPG evaporative gas cycle line to the outside. The LPG evaporative gas compressor is installed on the LPG evaporative gas cycle line. The LPG evaporative gas reliquefaction unit is installed on the LPG evaporative gas cycle line. The LNG liquid fuel supply unit sprays the liquid fuel in the LNG storage tank to the LPG evaporative reliquefaction unit, and returns the liquid fuel to the LNG storage tank.;COPYRIGHT KIPO 2013