The present invention relates to a boiloff gas liquefication system and a vessel including the same. The boiloff gas liquefication system includes: a liquefied gas storage tank storing liquefied gas; a boiloff gas compressor compressing boiloff gas produced from the liquefied gas storage tank to supply the same to an engine; and a boiloff gas liquefication part liquefying a surplus of the boiloff gas discharged from the liquefied gas storage tank. The boiloff gas liquefication part includes: a liquefier liquefying the boiloff gas through a heat exchange with a refrigerant; a boiloff gas heat exchanger provided in the upstream of the liquefier and cooling the boiloff gas compressed by the boiloff gas compressor with the boiloff gas discharged from the liquefied gas storage tank; and a boosting compressor provided in the upstream of the boiloff gas heat exchanger and changing the boiloff gas discharged from the boiloff gas compressor to 35 bar to 50 bar by additionally compressing the same in order to reduce cold required for liquefication in the liquefier. Therefore, the present invention is capable of reducing the size of a heat exchanger to a compact size.

    본 발명은 증발가스 액화 시스템 및 이를 포함하는 선박에 관한 것으로서, 액화가스를 저장하는 액화가스 저장탱크; 상기 액화가스 저장탱크에서 발생하는 증발가스를 압축하여 엔진에 공급하는 증발가스 압축기; 및 상기 액화가스 저장탱크에서 배출된 증발가스 중 잉여분을 액화하는 증발가스 액화부를 포함하며, 상기 증발가스 액화부는, 증발가스를 냉매와 열교환해 액화하는 액화기; 상기 액화기의 상류에 마련되며 상기 증발가스 압축기에 의해 압축된 증발가스를 상기 액화가스 저장탱크에서 배출되는 증발가스로 냉각하는 증발가스 열교환기; 및 상기 증발가스 열교환기의 상류에 마련되며 상기 액화기에서 액화를 위해 필요한 냉열을 줄이기 위하여, 상기 증발가스 압축기에서 토출된 증발가스를 추가 압축하여 35bar 내지 50bar로 변화시켜 부스팅 압축기를 포함하는 것을 특징으로 한다.


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    Title :

    boil-off gas reliquefaction system and a ship having the same


    Additional title:

    증발가스 액화 시스템 및 이를 포함하는 선박


    Contributors:
    JANG HYUN MIN (author) / PARK JONG WAN (author) / NAM KI IL (author) / LEE JAE JUN (author) / PARK CHEONG GI (author) / SON JAE WOOK (author) / LEE EUNG CHAN (author)

    Publication date :

    2021-04-12


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Korean


    Classification :

    IPC:    B63B Schiffe oder sonstige Wasserfahrzeuge , SHIPS OR OTHER WATERBORNE VESSELS / 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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