The present invention relates to a refrigerant tank maintenance method of a floating liquefied natural gas (FLNG) ship, and specifically is configured to be able to use liquefied natural gas that is classified in a gassing up step (S1c) and a warm up step (S2b) during a process of refrigerant tank maintenance. To this end, the present invention, which is a refrigerant tank maintenance method of a FLNG ship storing a refrigerant for liquefying classified hydrocarbon, uses one of extracted natural gas liquid, ethane (C_2H_6), propane (C_3H_8), and butane (C_4H10) as a fluid supplied to the refrigerant tank in the gassing up step for substituting inert gas with refrigerant gas in the refrigerant tank, and in the warm up step for substituting the refrigerant gas with room temperature refrigerant gas in the refrigerant tank.

    본 발명은 부유식 채취선의 냉매탱크 관리방법에 관한 것으로서, 특히 냉매탱크를 관리하는 과정 중에 개싱 업(Gassing up)단계(S1c)와 웜 업(Warm up)단계(S2b)에서 분류된 액화천연가스를 이용할 수 있도록 구성한 것이다. 상기와 같은 목적을 달성하기 위한 본 발명은 분류된 탄화수소를 액화하기 위한 냉매를 보관하는 부유식 채취선의 냉매탱크 관리방법으로서, 냉매탱크의 내부를 불활성가스에서 냉매가스로 치환하는 개싱 업단계와 냉매탱크의 내부를 상온의 냉매가스로 치환하는 웜 업단계에서 냉매탱크로 공급되는 유체는 추출된 천연가스액체(NGL), 에탄(C2H6), 프로판(C3H8), 부탄(C4H10) 중 어느 하나인 것을 기술적 특징으로 한다.


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    Title :

    Refrigerant Tank Maintenance Method of FLNG Ship


    Additional title:

    부유식 채취선의 냉매탱크 관리방법


    Contributors:
    SUH YEON MI (author)

    Publication date :

    2017-12-06


    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 / F25J LIQUEFACTION, SOLIDIFICATION, OR SEPARATION OF GASES OR GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT , Verflüssigen, Verfestigen oder Trennen von Gasen oder Gasgemischen durch Druck- und Kältebehandlung



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