The present invention relates to a boil-off gas re-liquefaction system for ships in which boil-off gas generated from a storage tank provided in a ship is compressed to supply the boil-off gas as fuel to a ship engine and the remaining boil-off gas is re-liquefied and recovered. More particularly, the present invention relates to a gas-liquid separator for a boil-off gas re-liquefaction system capable of safely recovering a lubricant component mixed during boil-off gas compression from the re-liquefaction boil-off gas and a boil-off gas re-liquefaction system including the same. The boil-off gas re-liquefaction system for ships according to the present invention includes a liquefied gas storage tank; an engine using boil-off gas generated in the liquefied gas storage tank as fuel; a compressor for compressing boil-off gas to be supplied as fuel of the engine; and a re-liquefaction device for re-liquefaction of the boil-off gas left after the compression by the compressor and the supply as the fuel of the engine. The re-liquefaction device includes a gas-liquid separator for performing gas-liquid separation on the re-liquefied boil-off gas. The compressor is a lubricating oil-lubricated compressor, the compressed boil-off gas introduced into the re-liquefaction device includes a lubricant component, and the gas-liquid separator has a liquid discharge portion in a side intermediate portion for discharging the liquid re-liquefaction boil-off gas from which the lubricant component is separated.

    본 발명은 선박에 마련된 저장탱크에서 생성된 증발가스를 압축시켜 선박의 엔진으로 연료로써 공급하고 남은 나머지 증발가스를 재액화시켜 회수하는 선박의 증발가스 재액화 시스템에 관한 것으로, 더욱 상세하게는, 증발가스의 압축 과정에서 혼입된 윤활제 성분을 재액화 증발가스로부터 분리하여 안전하게 회수할 수 있는 증발가스 재액화 시스템용 기액분리기와 이를 포함하는 증발가스 재액화 시스템에 관한 것이다. 본 발명에 따른 선박의 증발가스 재액화 시스템은, 액화가스 저장탱크; 상기 액화가스 저장탱크에서 생성된 증발가스를 연료로 하는 엔진; 상기 엔진의 연료로 공급할 증발가스를 압축시키는 압축기; 및 상기 압축기에서 압축되고 엔진의 연료로 공급하고 남은 압축 증발가스를 재액화시키는 재액화 장치;를 포함하고, 상기 재액화 장치는 재액화된 증발가스를 기액분리하는 기액분리기;를 포함하며, 상기 압축기는 급유 윤활식 압축기이고, 상기 재액화 장치로 도입되는 압축 증발가스에는 윤활제 성분이 포함되며, 상기 기액분리기에는 윤활제 성분이 분리된 액체 상태의 재액화 증발가스를 배출시키는 액체 배출부가 측면 중간부에 마련되는 것을 특징으로 한다.


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    Title :

    Boil-Off Gas Re-liquefaction System


    Additional title:

    선박의 증발가스 재액화 시스템


    Contributors:
    KIM JAE HWEE (author) / CHOI DONG KYU (author) / BAE JAE RYU (author) / CHOO GYO SIG (author)

    Publication date :

    2018-10-26


    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 / 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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