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NTIS 바로가기韓國海洋工學會誌 = Journal of ocean engineering and technology, v.32 no.2, 2018년, pp.95 - 105
유원우 (서울대학교 조선해양공학과) , 채민호 (현대자동차) , 박재욱 (삼성중공업) , 임영섭 (서울대학교 조선해양공학과)
An FLNG (floating liquefied natural gas) or LNG FPSO (floating production, storage and offloading) unit is a notable offshore unit with the increasing demand for LNG. The liquefaction process on an FLNG unit is the most important process because it determines the economic feasibility, but would be a...
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핵심어 | 질문 | 논문에서 추출한 답변 |
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FLNG, LNG-FPSO은 무엇아며 어떤 장점이 있는가? | FLNG(Floating liquefied natural gas), 혹은 LNG-FPSO(Floating production, storage and offloading)는 해양에서 LNG를 생산하는 해양시설로, 해저면의 상태에 크게 영향을 받지 않고 천해에서 심해까지 설치가 가능하며 설비의 이동 및 재활용이 가능하고, 육상에 설치되는 사회적 법적 제약을 경감할 수 있는 장점이 있다(Zhao et al., 2011; Mokhatab et al. | |
LNG는 어떤 특징이 있고 어디에 주로 사용되는가? | , 2013). LNG는 기체상태에 비하여 부피가 약 400-600배 줄어들기 때문에 천연가스의 원거리 수송을 위하여 널리 사용되고 있으며, 향후 그 수요와 공급이 더욱 증가할 것으로 기대받고 있다. LNG생산에 있어서 가장 핵심이 되는 것은 액화공정 설계 기술로 70년대부터 다양한 공정 설계안이 제시되어 왔다(Barron, 1985; Venkatarathnam and Timmerhaus, 2008; Timmerhaus and Flynn, 2013). | |
LNG생산에 핵심인 액화공정 설계 기술의 역사는 어떻게 되는가? | LNG생산에 있어서 가장 핵심이 되는 것은 액화공정 설계 기술로 70년대부터 다양한 공정 설계안이 제시되어 왔다(Barron, 1985; Venkatarathnam and Timmerhaus, 2008; Timmerhaus and Flynn, 2013). 초기에는 다른 성분의 냉매를 순차적으로 이용하는 복합 사이클이나(Kanoğlu, 2002; Mokhatab and Poe, 2012) 단일 혼합물을 냉매로 이용하는 SMR(Single mixed refrigerant)을 사용하였다(Swenson, 1977; Moein et al., 2015). 이후 다중 사이클 구조가 도입되면서 APCI(Air Products and Chemicals Inc.)에서 프로판(C3)을 사전냉각용으로 사용하는 C3MR(Propane precooled mixed refrigerant) 이 개발되어 산업적으로 널리 이용되어 왔다(Gaumer and Newton, 1973; Lee et al., 2012). Shell은 두가지 혼합냉매를 이용하는 DMR(Dual mixed refrigerant) 냉각 공정을 제안하였으며, C3MR 과 동급의 효율을 가짐을 보였다(Buijs et al., 2005; Wang et al., 2012). 최근에는 높은 효율을 갖는 삼중냉각사이클 공정인 AP-X등의 설계가 제시되고 있다(Barclay and Yang, 2006; Wang et al., 2012). |
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