Korean Chemical Engineering Research

  • 제50권3호
  • /
  • Pages.449-454
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  • 2012
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  • 0304-128X(pISSN)
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  • 2233-9558(eISSN)
한국화학공학회 (The Korean Institute of Chemical Engineers)
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무회분 석탄 생산을 위한 온순조건 용매추출 공정의 경제성 분석

An Economic Analysis of Solvent Extraction Process under Mild Condition for Production of Ash-Free Coal

  • 최호경 (한국에너지기술연구원 청정석탄센터) ;
  • 김상도 (한국에너지기술연구원 청정석탄센터) ;
  • 유지호 (한국에너지기술연구원 청정석탄센터) ;
  • 전동혁 (한국에너지기술연구원 청정석탄센터) ;
  • 임정환 (한국에너지기술연구원 청정석탄센터) ;
  • 임영준 (한국에너지기술연구원 청정석탄센터) ;
  • 이시훈 (한국에너지기술연구원 청정석탄센터)
  • Choi, Ho-Kyung (Clean Coal Research Center, Korea Institute of Energy Research) ;
  • Kim, Sang-Do (Clean Coal Research Center, Korea Institute of Energy Research) ;
  • Yoo, Ji-Ho (Clean Coal Research Center, Korea Institute of Energy Research) ;
  • Chun, Dong-Hyuk (Clean Coal Research Center, Korea Institute of Energy Research) ;
  • Lim, Jeong-Hwan (Clean Coal Research Center, Korea Institute of Energy Research) ;
  • Rhim, Young-Joon (Clean Coal Research Center, Korea Institute of Energy Research) ;
  • Lee, Si-Hyun (Clean Coal Research Center, Korea Institute of Energy Research)
  • 투고 : 2011.09.27
  • 심사 : 2011.12.01
  • 발행 : 2012.06.01
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초록

본 연구에서는 석탄의 연화온도보다 낮은 온도에서의 무회분 석탄 제조공정인 온순조건 용매추출 공정의 경제성을 분석하였다. 이를 위해 인도네시아 석탄 산지에 6,000 톤/일 규모의 온순조건 용매추출 플랜트를 건설하는 것으로 가정하였으며, 이 설비에 대하여 $96백만의 투자비용과, 내용년수 15년에 대한 IRR, B/C ratio, NPV, DPP를 계산하였다. 계산 결과 이 플랜트의 IRR은 31%, NPV는 $87백만, B/C ratio는 1.08, DPP는 3.9년인 것으로 계산되었으며, 이를 통해 석탄의 온순조건 용매추출 플랜트는 충분한 경제성이 있는 것으로 판단하였다. 민감도 분석 결과 무회분 석탄의 판매가격보다는 원료탄의 구입가격과 고품위 잔탄의 판매가격이 온순조건 용매추출 플랜트의 경제성을 크게 좌우하였다.

Economic feasibility of the process for a coal extraction under mild condition, which will produce ash-free coal at a temperature lower than that of coal softening, was analyzed. To this end, the plant of 6000 t/d in capacity was assumed to be constructed near a coal mine in Indonesia, and the IRR, NPV, B/C ratio, and DPP of the plant were calculated based on $96 million investment cost and 15 years service life. The IRR, NPV, B/C ratio, and DPP of the plant were calculated to be 31%, $87 million, 1.08, and 3.9 years, respectively, and which satisfied the evaluation criteria of investment. The economic feasibility of the plant was mainly dependent on the price of the coal initially fed and the residue coal remaining after the extraction, according to sensitivity analysis.

키워드

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  1. A Trend of Producing Technologies of the Ashless Hyper Coal as a Clean Energy Source vol.21, pp.4, 2012, https://doi.org/10.5855/ENERGY.2012.21.4.325
  2. An Analysis of Characteristics for the Non-catalytic Esterification of Palm Fatty Acid Distillate (PFAD) vol.52, pp.3, 2014, https://doi.org/10.9713/kcer.2014.52.3.395
  3. 무회분 석탄(AFC)을 바인더로 이용한 코크스의 물리적 및 화학적 특성 vol.55, pp.3, 2012, https://doi.org/10.9713/kcer.2017.55.3.395