Korean Chemical Engineering Research

The Korean Institute of Chemical Engineers (한국화학공학회)
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Economic Evaluations of DCL/ICL Processes

직·간접석탄액화공정의 경제성 평가

  • Park, Joo-Won (Department of Chemical Engineering., Kwangwoon University) ;
  • Bae, Jong-Soo (Department of Chemical Engineering., Kwangwoon University) ;
  • Kweon, Yeong-jin (Department of Chemical Engineering., Kwangwoon University) ;
  • Kim, Hak-Joo (Synfuel Research Center, Korea Institute of Energy Research) ;
  • Jung, Heon (Synfuel Research Center, Korea Institute of Energy Research) ;
  • Han, Choon (Department of Chemical Engineering., Kwangwoon University)
  • 박주원 (광운대학교 화학공학과) ;
  • 배종수 (광운대학교 화학공학과) ;
  • 권영진 (광운대학교 화학공학과) ;
  • 김학주 (한국에너지기술연구원 합성석유연구단) ;
  • 정헌 (한국에너지기술연구원 합성석유연구단) ;
  • 한춘 (광운대학교 화학공학과)
  • Received : 2009.08.07
  • Accepted : 2009.10.05
  • Published : 2009.12.31
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Abstract

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.

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.

Keywords

Acknowledgement

Supported by : 한국에너지기술연구원

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