SYSTEM FOR SUPPLYING FUEL FOR A MARINE STRUCTURE HAVING A RELIQUEFACTION APPARATUS AND A HIGH PRESSURE NATURAL GAS INJECTION ENGINE

摘要

PURPOSE: A fuel supply system of an offshore structure with a high-pressure natural gas injection engine and a re-liquefying device is provided to stably maintain LBOG(Liquefied Boil Off Gas) in a supercooling state. CONSTITUTION: A fuel supply system of an offshore structure with a high-pressure natural gas injection engine and a re-liquefying device comprises a BOG compression unit(13), a re-liquefying device(20), a high pressure pump(33), a high pressure vaporizer(37), and a BOG return line. The BOG compression unit is supplied with BOG from a storage tank(11), and compresses the BOG. The re-liquefying device liquefies the compressed BOG. The high pressure pump compresses LBOG liquefied in the re-liquefying device. The high pressure vaporizer supplies the BOG to the high-pressure natural gas injection engine by vaporizing the compressed BOG. The BOG return line returns the compressed BOG to the upper stream of the BOG compression unit in order to constantly control the pressure of the compressed BOG.