A liquefied gas treatment system

摘要

Provided is a liquefied gas treatment system for a vessel, which includes a storage tank (11) storing liquefied natural gas, and an engine using the liquefied natural gas stored in the tank as fuel. The liquefied gas treatment system includes: a first stream of boil-off gas, which is generated from the liquefied natural gas in the tank (11) and is discharged from the tank; a second stream of the boil-off gas, which is supplied as fuel to the engine; and a third stream of the boil-off gas, which is not supplied to the engine in the first stream. The first stream is compressed at about 150 to 400 bara in a compressor (13) and is branched into the second stream and the third stream. The compressed third stream is cooled and the cooled third stream is decompressed to be in a gas-liquid state and is supplied to a gas-liquid separator.