A system for reducing boil-off gas of a ship storage tank is disclosed. According to an embodiment of the present invention, a boil-off gas reduction system of a ship storage tank comprises: a supercooling line connected from a first storage tank to the first storage tank again through the inside of a second storage tank for transferring liquefied natural gas pumped by a pump in the first storage tank to the inside of the second storage tank to exchange heat with liquefied nitrogen stored in the second storage tank to supercool the liquefied natural gas, and recovering the supercooled liquefied natural gas to the inside of the first storage tank; and a first connection line connecting the supercooling line and a spray line provided in an upper portion of the inside of the first storage tank, and supplying the supercooled liquefied natural gas to the spray line to spray the supercooled liquefied natural gas to the inside of the first storage tank.
선박 저장탱크의 증발가스 감소시스템이 개시된다. 본 발명의 실시 예에 의한 선박 저장탱크의 증발가스 감소시스템은 제1저장탱크 내부의 펌프에 의해 펌핑된 액화천연가스를 제2저장탱크 내부로 보내어 제2저장탱크에 저장된 액화질소와 열교환하여 과냉각시키고, 과냉각된 액화천연가스가 제1저장탱크 내부로 다시 회수되도록, 제1저장탱크로부터 제2저장탱크의 내측을 거쳐 다시 제1저장탱크와 연결되도록 마련된 과냉각라인; 및 과냉각라인과 제1저장탱크의 내측 상부에 마련된 분사라인을 연결하며, 과냉각된 액화천연가스를 분사라인으로 공급하여 제1저장탱크의 내부에 분사되도록 하는 제1연결라인;을 포함한다.
SYSTEM FOR REDUCING BOIL OFF GAS OF STORAGE TANK OF SHIP
선박 저장탱크의 증발가스 감소시스템
2024-02-07
Patent
Electronic Resource
Korean
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