| 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 (11); 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 third stream compressed in the compressor is cooled in a heat exchanger (21) by exchanging heat with the first stream without employing a reliquefaction apparatus using a separate refrigerant, the thus cooled third stream is decompressed and the decompressed third stream is in a gas-liquid mixed state, and its gas and liquid components are returned to the tank (11). |
