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 a marine structure with a high-pressure natural gas injection engine and a re-liquefying apparatus is provided to reduce energy consumption by reducing flash gas while subcooling LBOG(Liquefied Boil-Off Gas). CONSTITUTION: A fuel supply system of a marine structure comprises a LNG(Liquefied Natural Gas) storage tank(11), a re-liquefying device(20), a high pressure pump(33), and a high pressure vaporizer(37). The NBOG(Natural Boil-Off Gas) generated in the LNG(Liquefied Natural Gas) storage tank is compressed in a BOG compression unit(13) at 12~45bara, and supplied to the re-liquefying device. The re-liquefied LBOG is compressed in the high pressure pump at 150~400bara, and supplied to the high pressure vaporizer. The vaporized BOG is continuously supplied to a high-pressure natural gas injection engine.