Disclosed is a boil-off gas (BOG) reliquefaction system for a vessel, capable of being flexibly operated. According to the present invention, the BOG reliquefaction system for a vessel comprises: a first compressor compressing BOG; a second compressor installed in parallel to the first compressor; a third compressor additionally compressing a part or all of a flow in which the BOG compressed by the first compressor is joined with the BOG compressed by the second compressor; a first heat exchanger using the BOG before being compressed by the first or second compressor as a refrigerant to exchange heat of the BOG compressed by the third compressor to cool the same; a refrigerant cycle circulating the BOG compressed by the second compressor; and a second decompressor decompressing the BOG passing a first cooling process by the first heat exchanger and a second cooling process using the BOG circulated in the refrigerant cycle as a refrigerant after being compressed by the third compressor. The first and second compressors are simultaneously operated.

    선박용 증발가스 재액화 시스템이 개시된다. 상기 선박용 증발가스 재액화 시스템은, 증발가스를 압축시키는 제1 압축기; 상기 제1 압축기와 병렬로 설치되는 제2 압축기; 상기 제1 압축기에 의해 압축된 증발가스와 상기 제2 압축기에 의해 압축된 증발가스가 합류된 흐름의 일부 또는 전부를 추가로 압축시키는 제3 압축기; 상기 제1 압축기에 의해 압축되거나 상기 제2 압축기에 의해 압축되기 전의 증발가스를 냉매로 사용하여, 상기 제3 압축기에 의해 압축된 증발가스를 열교환시켜 냉각시키는 제1 열교환기; 상기 제2 압축기에 의해 압축된 증발가스를 순환시키는 냉매 사이클; 및 상기 제3 압축기에 의해 압축된 후, 상기 제1 열교환기에 의한 1차 냉각 과정 및 상기 냉매 사이클을 순환하는 증발가스를 냉매로 사용한 2차 냉각 과정을 거친 증발가스를 감압시키는 제2 감압장치;를 포함하고, 상기 제1 압축기와 상기 제2 압축기가 동시에 구동되는 것을 특징으로 한다.


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    Title :

    BOG Reliquefaction System and Method for Vessels


    Additional title:

    선박용 증발가스 재액화 시스템 및 방법


    Contributors:

    Publication date :

    2020-02-26


    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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