PROBLEM TO BE SOLVED: To provide a ship which enables improvement of a reliquefaction rate of a boil-off gas (BOG) returned to a tank through a return line.SOLUTION: A ship 1A includes: a main gas engine 11; a tank 15 for storing a liquefied natural gas (LNG); a first supply line 2 which guides a boil-off gas (BOG) generated in the tank to a main gas engine as a fuel gas and is provided with a compressor 21; a return line 3 which is branched from the first supply line, leads to the tank, and is provided with an expansion device 31; a sub-gas engine 13; a second supply line 4 which takes out the LNG from the tank and guides a vaporized gas (VG) formed by the LNG being vaporized to the sub-gas engine; a first heat exchanger 61 which conducts heat exchange between the BOG flowing in a portion of the first supply line which is located at an upstream side of the compressor and the BOG flowing in a portion of the return line which is located at an upstream side of the expansion device; and a second heat exchanger 52 which conducts heat exchange between the BOG flowing out from the first heat exchanger in the return line and the LNG flowing in the second supply line to vaporize part of or all of the LNG.SELECTED DRAWING: Figure 1

    【課題】返送ラインを通じてタンクへ返送されるBOGの再液化率を向上させることができる船舶を提供する。【解決手段】船舶1Aは、主ガスエンジン11と、LNGを貯留するタンク15と、タンク内で発生したBOGを燃料ガスとして主ガスエンジンへ導く、圧縮機21が設けられた第1供給ライン2と、第1供給ラインから分岐してタンクへつながる、膨張装置31が設けられた返送ライン3と、副ガスエンジン13と、タンク内からLNGを取り出し、そのLNGが気化したVGを副ガスエンジンへ導く第2供給ライン4と、第1供給ラインにおける圧縮機よりも上流側部分に流れるBOGと返送ラインにおける膨張装置よりも上流側部分に流れるBOGとの間で熱交換を行う第1熱交換器61と、返送ラインにおいて第1熱交換器から流出するBOGと第2供給ラインに流れるLNGとの間で熱交換を行ってLNGの一部または全部を気化する第2熱交換器52と、を備える。【選択図】図1


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    Titel :

    SHIP


    Weitere Titelangaben:

    船舶


    Beteiligte:
    ANDO AKIHIRO (Autor:in) / TAKEDA HIROYUKI (Autor:in) / INTO NAOKO (Autor:in) / IWASAKI HIDEKAZU (Autor:in) / TAKADA HIROTAKA (Autor:in) / SHIMMURA NOBUHIRO (Autor:in)

    Erscheinungsdatum :

    2017-05-25


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Japanisch


    Klassifikation :

    IPC:    B63H Schiffsantrieb oder Steuerung der Schiffe , MARINE PROPULSION OR STEERING / B63B Schiffe oder sonstige Wasserfahrzeuge , SHIPS OR OTHER WATERBORNE VESSELS / B63J Hilfsanlagen auf Schiffen , AUXILIARIES ON VESSELS / F02B INTERNAL-COMBUSTION PISTON ENGINES , Brennkraftmaschinen mit innerer Verbrennung mit Verdrängerwirkung / 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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