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Received November 12, 2007
Accepted December 1, 2007
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직·간접 석탄액화 기술 동향
Trends of Direct/Indirect Coal Liquefaction Technologies
광운대학교 화학공학과, 139-701 서울시 노원구 월계동 447-1 1한국에너지기술연구원 합성석유연구단, 305-343 대전시 유성구 가정로 102
Department of Chemical Engineering, Kwangwoon University, 447-1 Wolgye-dong, Nowon-gu, Seoul 139-701, Korea 1Synfeul Research Center, Korea Institute of Energy Research, 102 Gajeong-ro, Yuseoung-gu, Daejeon 305-343, Korea
chan@kw.ac.kr
Korean Chemical Engineering Research, April 2008, 46(2), 248-257(10), NONE Epub 29 May 2008
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Abstract
1920년대 독일에서 최초로 시도되어진 석탄액화(coal liquefaction, coal-to-liquid, CTL)는 액화 방법에 따라 직접석탄액화(direct coal liquefaction, DCL)와 간접석탄액화(indirect coal liquefaction, ICL)로 나누어진다. 석탄액화 기술은 1970년대부터 2000년대까지 다양한 연구개발을 통해 원유를 대체할 수 있는 자원으로 개발되고 최적화 되어왔다. 특히 최근에는 국제유가의 상승 및 원유수급의 불안정으로 인해 안정적이고 매장량이 풍부한 석탄에 대한 관심이 더욱 높아지고 있으며 여러 국가에서 석탄액화 프로젝트가 진행 중에 있다. 본고의 취지는 석탄액화기술의 기술개발 현황 및 동향을 검토하는데 있다. 따라서 직·간접 석탄액화공정 비교와 함께 각국의 석탄액화 사업 현황 및 동향을 소개하였다. 석탄액화 사업은 대규모의 국책사업으로 추진되어야 하며 정부의 지원하에 해외 선진기술습득의 길을 모색하여야 할 것이다.
Coal liquefaction technology was established in Germany in 1920s. Coal liquefaction refers to the process in which coal is converted into liquid fuels such as gasoline and diesel oil under certain conditions. Coal liquefaction is usually classified into direct coal liquefaction (DCL) and indirect coal liquefaction (ICL). Various technologies for coal liquefaction, conducted between 1970s and 2000s, resulted in the development and optimization of a communication ready technology for the production of petroleum substitutes as refinery feedstocks. The purpose of this paper is to review the research, development and demonstration of coal liquefaction. In these respects, various DCL and ICL processes under development were illustrated and compared. Also, the status and perspective of coal liquefaction projects in the world were viewed. Considering the scale, and technical difficulties of domestic coal liquefaction, the project has be leaded by the government.
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