선박용 엔진의 연료 공급 시스템이 개시된다. 상기 선박용 엔진의 연료 공급 시스템은, 저장탱크로부터 배출된 증발가스를 다단계로 압축시키는 다단압축기; 상기 저장탱크로부터 배출된 액화천연가스를 압축시키는 제2 펌프; 상기 저장탱크로부터 배출된 액화천연가스를 냉매로, 상기 저장탱크로 복귀되는 액화천연가스를 열교환시켜 냉각시키는 제2 열교환기; 상기 제2 열교환기에서 냉매로 사용된 유체를 냉매로, 천연가스를 열교환시켜 냉각시키는 제3 열교환기; 상기 제3 열교환기에서 냉매로 사용된 액화천연가스를 기화시키는 기화기; 및 상기 제3 열교환기에 의해 냉각된 유체를 천연가스와 액화천연가스를 분리시키는 기액분리기;를 포함하고, 상기 기화기에 의해 기화된 천연가스는, 상기 제3 열교환기로 공급되어 상기 제2 열교환기에서 냉매로 사용된 유체를 냉매로 열교환되어 냉각되고, 상기 기액분리기에 의해 분리된 천연가스는 제2 엔진으로 공급되고, 상기 기액분리기에 의해 분리된 액화천연가스는 상기 제2 열교환기에 의해 냉각된 후 상기 저장탱크로 복귀되고, 상기 기액분리기에 의해 분리된 천연가스는, 상기 기액분리기로 공급되는 유체에 비해 메탄의 함량이 높아지고, 상기 기액분리기에 의해 분리된 액화천연가스는, 상기 기액분리기로 공급되는 유체에 비해 중탄화수소의 함량이 높아지며, 상기 제2 엔진은 일정값 이상의 메탄가를 요구하는 엔진이다.

    Disclosed is a fuel supply system of a vessel engine, capable of adjusting a methane value of natural gas supplied as fuel of an engine. According to the present invention, the fuel supply system of a vessel engine comprises: a multistage compressor to compress boil-off gas (BOG) discharged from a storage tank in multiple stages; a second pump to compress liquefied natural gas (LNG) discharged from the storage tank; a second heat exchanger to cool the LNG returned to the storage tank through heat exchange using the LNG discharged from the storage tank as a refrigerant; a third heat exchanger to cool the natural gas through heat exchange using a fluid, which is used as the refrigerant in the second heat exchanger, as the refrigerant; an evaporator to evaporate the LNG used as the refrigerant in the third heat exchanger; and a gas-liquid separator to separate a fluid cooled by the third heat exchanger into the natural gas and the LNG. The natural gas evaporated by the evaporator is cooled through heat exchange using the fluid, which is supplied to the third heat exchanger and is used as the refrigerant in the second heat exchanger, as the refrigerant. The natural gas separated by the gas-liquid separator is supplied to a second engine and the LNG separated by the gas-liquid separator is returned to the storage tank after being cooled by the second heat exchanger. The content of methane in the natural gas separated by the gas-liquid separator is increased in comparison with the fluid supplied to the gas-liquid separator, the content of heavy hydrocarbon of the LNG separated by the gas-liquid separator is increased in comparison with the fluid supplied to the gas-liquid separator, and the second engine is an engine requiring a methane value equal to or greater than a predetermined value.


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    Titel :

    Fuel Supply System and Method of Engine for Vessel


    Weitere Titelangaben:

    선박용 엔진의 연료 공급 시스템 및 방법


    Erscheinungsdatum :

    2024-05-14


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Koreanisch


    Klassifikation :

    IPC:    B63H Schiffsantrieb oder Steuerung der Schiffe , MARINE PROPULSION OR STEERING / B63B Schiffe oder sonstige Wasserfahrzeuge , SHIPS OR OTHER WATERBORNE VESSELS / F02M Zuführen von Brennstoff-Luft-Gemischen oder deren Bestandteilen bei Brennkraftmaschinen allgemein , SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF / F17C Behälter zum Aufnehmen oder Speichern verdichteter, verflüssigter oder verfestigter Gase , VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES



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