Disclosed is a fuel gas supplying system which can improve efficiency of reliquefaction, and can efficiently utilize and manage fuel gas. The system for supplying fuel gas in accordance with an embodiment of the present invention, comprises: a storage tank which receives liquefied gas and evaporation gas; an evaporation gas supplying line including a compression part that pressurizes the evaporation gas of the storage tank; a nitrogen separator which passes through the compression part to separate a nitrogen ingredient contained in the pressurized evaporation gas; a first fuel gas supplying line which supplies a first gas flow containing a nitrogen ingredient with a first concentration separated by the nitrogen separator to a first engine; and a reliquefaction line which receives a second gas flow containing a nitrogen ingredient with a second concentration separated by the nitrogen separator for reliquefaction. In regards to this, the reliquefaction line includes: a cooling part which cools the second gas flow; a first expansion valve which primarily decompresses the second gas flow passing through the cooling part; a first gas-liquid separator which passes through the first expansion valve to separate evaporation gas in a mixed state of gas and liquid into a gas ingredient and a liquid ingredient; and an evaporation gas circulation line which supplies the gas ingredient separated by the first gas-liquid separator to a second engine.
연료가스 공급시스템이 개시된다. 본 발명의 실시 예에 의한 연료가스 공급시스템은 액화가스 및 증발가스를 수용하는 저장탱크, 저장탱크의 증발가스를 가압하는 압축부를 구비하는 증발가스 공급라인, 압축부를 통과하여 가압된 증발가스에 함유된 질소성분을 분리하는 질소분리기, 질소분리기에 의해 분리된 제1농도의 질소성분을 함유하는 제1가스흐름을 제1엔진으로 공급하는 제1연료가스 공급라인 및 질소분리기에 의해 분리된 제2농도의 질소성분을 함유하는 제2가스흐름을 공급받아 재액화시키는 재액화라인을 포함하고, 재액화라인은 제2가스흐름을 냉각시키는 냉각부와, 냉각부를 통과한 제2가스흐름을 1차적으로 감압시키는 제1팽창밸브와, 제1팽창밸브를 통과하여 기액 혼합상태의 증발가스를 기체 성분과 액체 성분으로 분리하는 제1기액분리기와, 제1기액분리기에서 분리된 기체 성분을 제2엔진으로 공급하는 증발가스 순환라인을 포함하여 제공될 수 있다.
FUEL GAS SUPPLYING SYSTEM IN SHIPS
연료가스 공급시스템
2016-10-11
Patent
Electronic Resource
Korean
IPC: | F02M Zuführen von Brennstoff-Luft-Gemischen oder deren Bestandteilen bei Brennkraftmaschinen allgemein , SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF / B63B Schiffe oder sonstige Wasserfahrzeuge , SHIPS OR OTHER WATERBORNE VESSELS / B63H Schiffsantrieb oder Steuerung der Schiffe , MARINE PROPULSION OR STEERING / F02D CONTROLLING COMBUSTION ENGINES , Steuern oder Regeln von Brennkraftmaschinen / F17C Behälter zum Aufnehmen oder Speichern verdichteter, verflüssigter oder verfestigter Gase , VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES |