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Received December 17, 2008
Accepted January 5, 2009
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직접석탄액화 공정의 경제성 평가
Economic Evaluations of Direct Coal Liquefaction Processes
광운대학교 화학공학과, 139-701 서울시 노원구 월계동 447-1 1한국에너지기술연구원 합성석유연구단, 305-343 대전시 유성구 장동 71-2
Department of Chemical Engineering., Kwangwoon University, 447-1 Wolgye-dong, Nowon-gu, Seoul 139-701, Korea 1Synfeul Research Center, Korea Institute of Energy Research, 71-2 Jang-dong, Yuseong-gu, Daejeon 305-343, Korea
chan@kw.ac.kr
Korean Chemical Engineering Research, February 2009, 47(1), 127-132(6), NONE Epub 27 February 2009
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Abstract
석유를 대체할 수 있는 현실적 대안으로 주목받고 있는 직접석탄액화(direct coal liquefaction, DCL) 공정의 경제성을 평가하고자하였다. 이때 역청탄을 이용하여 주요 제품(디젤, 나프타) 생산량 50,000 bbl/day의 규모에 대하여 각 공정에 적합한 검토기준을 세워 비용 및 매출액등을 산정하였다. 또한 각 공정별 민감도 분석을 실시하여 공정에 대한 중요 변수들의 가격 변동에 따른 경제성을 평가하였다. 본 생산량을 기준으로 Illinois #6 유연탄을 원료탄으로 사용하였을 때, 총 투자액은 $3,994,858,000로 나타났다. 내부수익률(internal rate of return, IRR)의 경우, 기본조건에서 각각 6.60%로 나타났으며, 원료석탄 가격과 생산 제품 판매가에 가장 크게 영향을 받는 것으로 나타났다. 원금상환 기간은 12.8년으로 긴 시간을 요구하며, 이는 현재의 고석탄가 때문으로 해석된다. 또한 민감도 분석 결과 제품가격, 원료석탄_x000D_
가격, 건설비의 변동률 순서로 수익률에 변화를 주는 것으로 나타났다.
This report examines the economic feasibility of a commercial 50,000 barrel per day direct coal liquefaction(DCL) facility to produce commercial-grade diesel and naphtha liquids from medium-sulfur bituminous coal. The scope of the study includes capital and operating cost estimates, sensitivity analysis and a comparative financial analysis. Based on plant capacity of 50,000BPD, employing Illinois #6 bituminous coal as feed coal the total capital cost appeared $3,994,858,000. Also, the internal rate of return of DCL appeared 6.60% on the base condition. In this case, coal_x000D_
price and sale price of products were the most influence factors. And DCL’s payback period demanded a long time(12.3 years), because of high coal price at the present time. According to sensitivity analyses, the important factors on DCL processes were product sale price, feed coal price and the capital cost in order.
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