SYSTEM AND METHOD FOR BOOSTING BOG IN A LNG FUEL SYSTEM

摘要

A gas supply system for dual-fuel or gas engines, comprising at least one liquid natural gas (LNG) cargo tank (1), a first pump (2), a compressor (30), a cryogenic heat exchanger (16) and a high pressure pump (10) delivering gas to the engines. According to the present invention the system further comprises an ejector (4) and a suction drum (6); the ejector (4) is arranged to receive LNG motive fluid from the first pump, draw condensate from the cryogenic heat exchanger (16) and discharge a mixture of the motive fluid and condensate to the suction drum (6); and the suction drum (6) is arranged to supply the mixture of the LNG motive fluid and the condensate to the high pressure pump (10).