BOIL-OFF GAS RECOVERY SYSTEM

• Main Authors: TEZUKA, Satoshi, AKAMO, Naoki, SEYAMA, Katsuhiro
• Format: Patent
• Language: English; French; German
• Published: 23.09.2020
• Subjects: BLASTING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; HEATING; LIGHTING; LIQUEFACTION SOLIDIFICATION OF GASES; LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS; MANUFACTURE OR STORAGE OF ICE; MECHANICAL ENGINEERING; MIXTURES BY PRESSURE AND COLD TREATMENT; REFRIGERATION OR COOLING; WEAPONS

A boil-off gas recovery system capable of suppressing performance deterioration of a heat exchanger in a boil-off gas re-liquefying system is provided. A boil-off gas recovery system includes a tank where a liquefied gas is stored, a reciprocating compressor to which poly-±-olefin lubricating oil is supplied, the compressor that compresses a boil-off gas generated by vaporization of part of the liquefied gas in the tank, a separator that separates the poly-±-olefin lubricating oil contained in the boil-off gas which is discharged from the compressor, and a re-liquefying system having a heat exchanger that cools the boil-off gas from which the poly-±-olefin lubricating oil is already separated by the separator by heat exchange with the boil-off gas supplied to the compressor from the tank, the re-liquefying system where the liquefied boil-off gas is returned to the tank.