Boil-off gas re-liquefaction system and ship having the same

• Main Authors: YOUN YEO BUM, KIM YOO RI
• Format: Patent
• Language: English; Korean
• Published: 22.11.2022
• Subjects: BLASTING; EQUIPMENT FOR SHIPPING; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED,LIQUEFIED, OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; HEATING; LIGHTING; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; RELATED EQUIPMENT; SHIPS OR OTHER WATERBORNE VESSELS; STORING OF DISTRIBUTING GASES OR LIQUIDS; TRANSPORTING; VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED ORSOLIDIFIED GASES; WEAPONS

The present invention relates to a boil-off gas re-liquefaction system for treating liquefied gas, which is heavy hydrocarbon or ammonia, and a ship. According to the present invention, the boil-off gas re-liquefaction system comprises: a compressor for compressing boil-off gas generated in a liquefied gas storage tank in multiple stages; a condenser condensing the boil-off gas compressed by the compressor; an intercooler for performing mutual heat exchange between a part and the remainder of the boil-off gas liquefied in the condenser and transferring the boil-off gas generated by the heat exchange to the compressor; and a moisture removal filter for filtering out moisture contained in the boil-off gas that is liquefied in the condenser and then transferred to the liquefied gas storage tank via the intercooler. 본 발명은 증발가스 재액화 시스템 및 선박에 관한 것으로서, 중탄화수소 또는 암모니아인 액화가스를 처리하는 시스템으로서, 액화가스 저장탱크에서 발생하는 증발가스를 다단으로 압축하는 압축기; 상기 압축기에서 압축된 증발가스를 응축시키는 응축기; 상기 응축기에서 액화된 증발가스 중 일부와 나머지를 상호 열교환시키며, 열교환에 의해 발생한 증발가스를 상기 압축기에 전달하는 인터쿨러; 및 상기 응축기에서 액화된 후 상기 인터쿨러를 경유해 상기 액화가스 저장탱크로 전달되는 증발가스에 포함되는 수분을 걸러내는 수분제거필터를 포함한다.