The purpose of the present invention is to provide a system and a method to effectively and economically treat an boil-off gas generated from a storage tank and an boil-off gas returned in unloading in a ship. Disclosed are a system and a method to treat boil-off gases of a ship. According to the present invention, the system to treat boil-off gases of a ship in which an liquefied natural gas (LNG) storage tank is arranged and which stores and transports LNG comprises: a fuel tank in which the LNG used for a fuel of the ship is stored; a compressor to compress a boil-off gas generated from the LNG storage tank and a boil-off gas returned in unloading of the LNG outside the ship; a fuel supply line to supply the compressed boil-off gas as a fuel by connecting from a lower class of the compressor to a fuel consumption place of the ship; a re-liquefaction line to store a remaining boil-off gas, which is remained after being separated from the fuel supply line and being supplied as a fuel, in the LNG storage tank by liquefying and cooling the remaining boil-off gas and by exchanging heat with a boil-off gas which will be introduced to the compressor; and a gas separation line to supply a boil-off gas which is separated from the re-liquefaction line and which is not re-liquefied to a lower part of the fuel tank.
선박의 증발가스 처리 시스템 및 방법이 개시된다. 본 발명의 선박의 증발가스 처리 시스템은, LNG 저장탱크가 마련되어 LNG를 저장 및 운반하는 선박의 증발가스 처리 시스템에 있어서, 상기 선박의 연료로 사용되는 LNG가 저장되는 연료탱크; 상기 LNG 저장탱크에서 발생하는 증발가스(Boil-Off Gas) 및 상기 선박의 외부로 LNG를 하역시 반송되는 증발가스를 압축하는 압축기; 상기 압축기의 하류로부터 상기 선박의 연료소비처로 연결되어 압축된 상기 증발가스를 연료로 공급하는 연료공급라인; 상기 연료공급라인으로부터 분기되어 연료로 공급되고 남는 증발가스를, 상기 압축기로 도입될 증발가스와 열교환으로 냉각시켜 재액화하여 상기 LNG 저장탱크에 저장하는 재액화라인; 및 상기 재액화라인으로부터 분기되며 재액화되지 않은 증발가스를 상기 연료탱크의 하부로 공급하는 가스분리라인을 포함하는 것을 특징으로 한다.
BOIL-OFF GAS TREATMENT SYSTEM FOR SHIP
선박의 증발가스 처리 시스템 및 방법
2016-06-20
Patent
Electronic Resource
Korean
IPC: | B63B Schiffe oder sonstige Wasserfahrzeuge , SHIPS OR OTHER WATERBORNE VESSELS / F17C Behälter zum Aufnehmen oder Speichern verdichteter, verflüssigter oder verfestigter Gase , VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES / F25J LIQUEFACTION, SOLIDIFICATION, OR SEPARATION OF GASES OR GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT , Verflüssigen, Verfestigen oder Trennen von Gasen oder Gasgemischen durch Druck- und Kältebehandlung |