PROBLEM TO BE SOLVED: To provide a fuel gas supply system, a fuel gas supply method and a vessel adapted to prevent use of a boil-off gas liquefier from causing a fluctuation in a composition ratio of boil-off gas when pressurized boil-off gas is supplied to an engine as fuel gas.SOLUTION: A fuel gas supply system which supplies fuel gas to an engine comprises: a tank to store liquefied gas; a pressurization mechanism which pressurizes the boil-off gas vaporized from the liquefied gas and delivers the same to the engine as a fuel; a liquefier which liquefies a portion of the boil-off gas pressurized and delivered by the pressurization mechanism and returns the liquefied boil-off gas to the tank; and a control device which controls an amount of the boil-off gas flowing in the liquefier. The liquefier has recovery piping which returns gas-liquid mixed fluid, a mixture of the liquefied gas liquefied in the liquefier with the boil-off gas not liquefied therein, to a liquid phase of the liquefied gas in the tank.SELECTED DRAWING: Figure 1

    【課題】加圧したボイルオフガスを燃料ガスとしてエンジンに供給するとき、ボイルオフガスの液化装置の使用によってボイルオフガスの組成比率が変化しないように構成された燃料ガス供給システム、燃料ガス供給方法、及び船舶を提供する。【解決手段】エンジンに燃料ガスを供給する燃料ガス供給システムは、液化ガスを貯留するタンクと、前記液化ガスから気化したボイルオフガスをエンジンに燃料ガスとして供給するために、前記ボイルオフガスを加圧し送出する加圧機構と、前記加圧機構で加圧されて送出されたボイルオフガスの一部を液化して前記タンクに戻す液化装置と、前記液化装置に流れるボイルオフガスの量を制御する制御装置と、を備え、前記液化装置は、前記液化装置で液化した液化ガスと液化しなかったボイルオフガスの気液混合流体を、前記タンク内の液化ガスの液相中に戻す回収配管を備える。【選択図】 図1


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    Title :

    FUEL GAS SUPPLY SYSTEM, VESSEL AND FUEL GAS SUPPLY METHOD


    Additional title:

    燃料ガス供給システム、船舶、及び燃料ガス供給方法


    Contributors:

    Publication date :

    2018-05-10


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    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



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