Disclosed is a reliquefaction method for evaporation gas of a vessel. The reliquefaction method for evaporation gas of a vessel includes: a first step of using evaporation gas as a refrigerant in a first heat exchanger; a second step of enabling the evaporation gas used as the refrigerant in the first heat exchanger in the first step to diverge into two flows; a third step of enabling one flow to move into a first compressor and enabling the other flow to move into a second compressor among the flow diverging into the two flows in the second step; a fourth step of heat-exchanging the evaporation gas compressed by the first compressor or the second compressor by the first heat exchanger and cooling the same by using the evaporation gas supplied to the first heat exchanger as the refrigerant in the first step; a fifth step of heat-exchanging a fluid cooled by the first heat exchanger in the fourth step by a second heat exchanger and cooling the evaporation gas by using the evaporation gas circulating in a refrigerant cycle as the refrigerant; and a sixth step of decompressing the fluid cooled by the second heat exchanger in the fifth step. The evaporation gas circulating in the refrigerant cycle is processed by a step 5-1) of being compressed by the first compressor or the second compressor (the compressor compressing the evaporation gas supplied to the refrigerant cycle is called a compressor for a refrigerant cycle); a step 5-2) in which the density thereof is measured by a flowmeter; a step 5-3) of being cooled by the second heat exchanger; a step 5-4) of being decompressed; a step 5-5) of being used as the refrigerant in the second heat exchanger; a step 5-6) of being compressed; and a step 5-7) in which nitrogen is injected.

    선박용 증발가스 재액화 방법이 개시된다. 상기 선박용 증발가스 재액화 방법은, 1) 증발가스를 제1 열교환기에서 냉매로 사용하는 단계; 2) 상기 1)단계에서 상기 제1 열교환기에서 냉매로 사용된 증발가스를 두 흐름으로 분기시키는 단계; 3) 상기 2)단계에서 두 흐름으로 분기된 흐름 중, 한 흐름은 제1 압축기로 보내고, 나머지 흐름은 제2 압축기로 보내는 단계; 4) 상기 제1 압축기 또는 상기 제2 압축기에 의해 압축된 증발가스를, 상기 1)단계에서 상기 제1 열교환기로 공급된 증발가스를 냉매로 사용하여, 상기 제1 열교환기에 의해 열교환시켜 냉각시키는 단계; 5) 상기 4)단계에서 상기 제1 열교환기에 의해 냉각된 유체를, 냉매 사이클을 순환하는 증발가스를 냉매로 사용하여, 제2 열교환기에 의해 열교환시켜 냉각시키는 단계; 및 6) 상기 5)단계에서 상기 제2 열교환기에 의해 냉각된 유체를 감압시키는 단계;를 포함하고, 상기 냉매 사이클을 순환하는 증발가스는, 5-1) 상기 제1 압축기 또는 상기 제2 압축기에 의해 압축되는 단계(이하, 냉매 사이클로 공급되는 증발가스를 압축시키는 압축기를 '냉매 사이클용 압축기;라고 한다.); 5-2) 유량계에 의해 밀도가 측정되는 단계; 5-3) 상기 제2 열교환기에 의해 냉각되는 단계; 5-4) 감압되는 단계; 5-5) 상기 제2 열교환기에서 냉매로 사용되는 단계; 5-6) 압축되는 단계; 및 5-7) 질소가 주입되는 단계;를 포함하는 과정을 거친다.


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    Title :

    Boil-Off Gas Reliquefaction System and Method for Vessel


    Additional title:

    선박용 증발가스 재액화 시스템 및 방법


    Contributors:

    Publication date :

    2019-06-27


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Korean


    Classification :

    IPC:    B63B Schiffe oder sonstige Wasserfahrzeuge , SHIPS OR OTHER WATERBORNE VESSELS / B63H Schiffsantrieb oder Steuerung der Schiffe , MARINE PROPULSION OR STEERING / 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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