FUEL GAS SUPPLY SYSTEM USING RECYCLED PRODUCTION GAS

摘要

PURPOSE: A fuel supply device using the re-circulating of fuel supply gas is provided to simplify the entire structure by omitting an evaporator to produce and control separate make-up gas controlling the inner pressure of an LNG vessel. CONSTITUTION: A fuel supply device using the re-circulating of fuel supply gas comprises an LNG vessel(10), an LNG evaporator(11), an LNG high-pressure pump(12), an evaporation-gas compressor(13), and a pressure control expanding valve(14). The LNG vessel is connected to a ship engine to supply LNG gas to the ship engine. The LNG evaporator is installed between the LNG vessel and the ship engine to evaporate LNG from the LNG vessel. The LNG high-pressure pump is installed on an LNG supply line, which connects the LNG vessel to the LNG evaporator. The evaporation-gas compressor compresses evaporation gas from the LNG vessel to supply to the LNG evaporator.