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Language: korean

Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received August 7, 2009
Accepted October 5, 2009

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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직·간접석탄액화공정의 경제성 평가

Economic Evaluations of DCL/ICL Processes

박주원 배종수 권영진 김학주¹ 정헌¹ 한춘^†

Joo-Won Park Jong-Soo Bae Yeong-jin Kweon Hak-Joo Kim¹ Heon Jung¹ Choon Han^†

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 ¹Synfuel Research Center, Korea Institute of Energy Research, 102 Gajeong-ro, Yuseong-gu, Daejeon 305-343, Korea

chan@kw.ac.kr

Korean Chemical Engineering Research, December 2009, 47(6), 781-787(7), NONE Epub 6 January 2010

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Abstract

석탄액화(Coal to Liquid, CTL) 공정은 직접액화(Direct Coal Liquefaction, DCL) 공정과 간접액화(Indirect Coal Liquefaction, ICL) 공정으로 대분되며, 각 공정의 경제성을 분석하기 위하여 주요 제품(디젤, 납사) 생산량이 50,000 barrel per day(BPD)의 직·간접석탄액화공정을 선정하고 공정에 적합한 검토기준을 세워 건설비용 및 매출액 등을 산정하였다. 또한 석탄액화공정에 대한 중요 변수들의 가격 변동에 따른 민감도 분석을 실시하였다. 생산량을 기준으로 선정된 원료탄(Illinois #6 유연탄)을 사용하였을 때, 총 투자액은 각각 DCL $3,994,858,000, ICL $4,962,263,000로 나타났다. 경제성 분석결과 내부수익률(internal rate of return, IRR)은 기본조건에서 각각 13.27%(DCL), 12.68%(ICL)로 나타났으며, 두 공정 모두 원료석탄 가격과 생산 제품 판매가에 가장 크게 영향을 받는 것으로 나타났다. 원금상환 기간은 DCL이 6.6년, ICL이 6.8년으로 나타났으며, 민감도 분석 결과 제품가격, 원료석탄가격, 건설비의 변동률 순서로 수익률에 변화를 주는 것으로 나타났다.

This report investigates the economic proprieties of commercial 50,000 barrel per day direct/indirect coal liquefaction(DCL/ICL) plants to produce commercial-grade diesel and naphtha liquids. The scope of the study includes capital and operating cost estimates, sensitivity analyses and a comparative financial analyses. Based on plant capacity of 50,000BPD, employing Illinois #6 bituminous coal as feed coal, the total capital cost appeared $3,994,858,000(DCL) and $4,962,263,000(ICL). Also, the internal rate of return of DCL/ICL appeared 13.27% and 12.68% on the base condition respectively. In this case, coal price and sale price of products were the most influence factors. And ICL’s payback period(6.8 years) was longer than DCL’s(6.6 years). According to sensitivity analyses, the important factors on both DCL/ICL processes were product sale price, feed coal price and the capital cost in order.

Keywords

Coal to Liquid Direct Coal Liquefaction Indirect Coal Liquefaction Sensitivity Analysis Economic Evaluation

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