Disclosed is a reliquefaction system for a vessel storage tank. According to an embodiment of the present invention, the reliquefaction system for a vessel storage tank includes: a refrigerant circulation line extended from the inside of at least one of a liquid dome and a vapor dome provided to protrude from the top of a storage tank storing liquefied gas and its boil-off gas to an upper part of the inside of the storage tank where the boil-off gas exists, and circulating a refrigerant; a heat exchanger provided on the refrigerant circulation line, and liquefying the boil-off gas by exchanging heat between the boil-off gas and the refrigerant; a compressor placed on the refrigerant circulation line, and compressing the heat-exchanged refrigerant; a condenser condensing the compressed refrigerant; and an expander decompressing the condensed refrigerant to send the same to the heat exchanger. Therefore, the present invention is capable of controlling pressure in a storage tank by effectively liquefying boil-off gas in the tank.
선박 저장탱크의 재액화시스템을 개시한다. 본 발명의 실시 예에 따른 선박 저장탱크의 재액화시스템은 액화가스 및 이의 증발가스를 저장하는 저장탱크의 상단에 돌출되게 마련된 리퀴드돔 및 베이퍼돔 중 하나 이상의 내측으로부터 증발가스가 존재하는 저장탱크의 내측 상부 쪽으로 연장되며, 냉매가 순환하는 냉매순환라인; 냉매순환라인에 마련되며, 증발가스와 냉매를 열교환시켜 증발가스를 액화시키는 열교환기; 냉매순환라인 상에 배치되며, 열교환된 냉매를 압축시키는 압축기; 압축된 냉매를 응축시키는 응축기; 및 응축된 냉매를 감압하여 열교환기로 보내는 팽창기;를 포함한다.
RELIQUEFACTION SYSTEM AND PRESSURE CONTROL SYSTEM OF STORAGE TANK OF SHIP
선박 저장탱크의 재액화시스템 및 압력조절시스템
2021-03-30
Patent
Electronic Resource
Korean
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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