Disclosed are a boil-off gas treatment system for a ship and a method thereof. The boil-off gas treatment system for a ship comprises: a boil-off gas supply line provided in a ship and connected from a storage tank, in which liquefied gas is stored, to a main engine in the ship; a compressor provided on the boil-off gas supply line to receive the boil-off gas generated from the liquefied gas and compress the same with the fuel supply pressure of the main engine; a reliquefaction line which is branched from the boil-off gas supply line downstream of the compressor to connect to the storage tank and cools and reliquefies compressed gas that is not supplied as fuel for the main engine; a precooler provided on the reliquefaction line to receive the compressed gas and cool the same through heat exchange with a refrigerant; a heat exchanger which is provided on the reliquefaction line and receives the compressed gas cooled by the precooler and cools the same through heat exchange with the uncompressed boil-off gas to be supplied to the compressor; a refrigerant circulation line through which the refrigerant for cooling the compressed gas in the precooler circulates; and a refrigerant heat exchanger which is provided on the refrigerant circulation line and cools the refrigerant through heat exchange with the uncompressed boil-off gas that is to be supplied to the compressor after heat-exchanged by the heat exchanger. Therefore, the boil-off gas treatment system can cool the boil-off gas more effectively, thereby increasing reliquefaction performance.

    선박의 증발가스 처리 시스템 및 방법이 개시된다. 본 발명의 선박의 증발가스 처리 시스템은, 선박에 마련되며 액화가스가 저장된 저장탱크로부터 선내 주엔진으로 연결되는 증발가스 공급라인; 상기 증발가스 공급라인에 마련되며 상기 액화가스로부터 발생하는 증발가스를 공급받아 상기 주엔진의 연료공급압력으로 압축하는 압축기; 상기 압축기의 하류에서 상기 증발가스 공급라인으로부터 분기되어 상기 저장탱크로 연결되며, 상기 주엔진의 연료로 공급되지 않은 압축가스를 냉각하여 재액화시키는 재액화 라인; 상기 재액화 라인에 마련되어 상기 압축가스를 공급받아 냉매와의 열교환으로 냉각시키는 예냉기; 상기 재액화 라인에 마련되며 상기 예냉기에서 냉각된 상기 압축가스를 공급받아 상기 압축기로 공급될 미압축 증발가스와 열교환으로 냉각시키는 열교환기; 상기 예냉기에서 상기 압축가스를 냉각시키는 냉매가 순환하는 냉매순환라인; 및 상기 냉매순환라인에 마련되며 상기 냉매를, 상기 열교환기에서 열교환 후 상기 압축기로 공급될 상기 미압축 증발가스와 열교환으로 냉각시키는 냉매 열교환기;를 포함한다.


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    Title :

    Boil-Off Gas Treatment System and Method for Ship


    Additional title:

    선박의 증발가스 처리 시스템 및 방법


    Contributors:
    PARK JU WOON (author) / SHIN HYUN JUN (author) / CHOI WON JAE (author) / AHN SUNG IL (author) / CHOI DONG KYU (author)

    Publication date :

    2021-02-04


    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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