에너지공학 (Journal of Energy Engineering)

  • 제23권2호
  • /
  • Pages.1-6
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  • 2014
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  • 1598-7981(pISSN)
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  • 2713-7074(eISSN)
한국에너지학회 (The Korean Society for Energy)
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중질유 분무 코팅에 의한 저등급 석탄의 고품위화와 자연발화 특성 분석

Experimental Analysis of Propensity for Spontaneous Combustion of Low-Rank Coal Upgraded by Spray Coating with Heavy Oil

  • 전동혁 (한국에너지기술연구원 청정연료연구실) ;
  • 박인수 (한국에너지기술연구원 청정연료연구실) ;
  • 김상도 (한국에너지기술연구원 청정연료연구실) ;
  • 임영준 (한국에너지기술연구원 청정연료연구실) ;
  • 최호경 (한국에너지기술연구원 청정연료연구실) ;
  • 유지호 (한국에너지기술연구원 청정연료연구실) ;
  • 임정환 (한국에너지기술연구원 청정연료연구실) ;
  • 이시훈 (한국에너지기술연구원 청정연료연구실)
  • Chun, Dong Hyuk (Clean Fuel Laboratory, Korea Institute of Energy Research) ;
  • Park, In Soo (Clean Fuel Laboratory, Korea Institute of Energy Research) ;
  • Kim, Sang Do (Clean Fuel Laboratory, Korea Institute of Energy Research) ;
  • Rhim, Young Joon (Clean Fuel Laboratory, Korea Institute of Energy Research) ;
  • Choi, Ho Kyung (Clean Fuel Laboratory, Korea Institute of Energy Research) ;
  • Yoo, Jiho (Clean Fuel Laboratory, Korea Institute of Energy Research) ;
  • Lim, Jeong Hwan (Clean Fuel Laboratory, Korea Institute of Energy Research) ;
  • Lee, Si Hyun (Clean Fuel Laboratory, Korea Institute of Energy Research)
  • 투고 : 2013.01.14
  • 심사 : 2014.04.17
  • 발행 : 2014.06.30
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초록

저등급석탄을 효율적으로 활용하기 위한 고품위화 기술에 대한 연구를 수행하였다. 저등급석탄을 건조시켜 고발열량 석탄으로 제조하는 과정에서 자연발화에 대한 안정화를 위해 중질유를 분무 코팅하는 방법을 적용하였다. 수분 30wt% 이상의 저등급석탄을 고품위화하여 6,000 kcal/kg 이상의 고발열량 석탄을 제조하였으며, 중질유 분무 코팅을 통해 자연발화에 대한 안정성을 확인하였다. 중질유 분무 코팅의 방법은 석탄을 건조시킨 후 분무 코팅하는 것이 가장 적절한 것으로 나타났으며, 자연발화에 대한 충분한 안정성을 갖기 위해서는 중질유를 2wt% 이상 석탄 표면에 흡착시켜야 하는 것으로 나타 났다.

Upgrading technology has been studied for efficient utilization of low rank coal. Spray coating of heavy oil was applied on the upgrading process in order to stabilize low rank coal against spontaneous combustion. Low rank coal, which contains more than 30wt% of moisture, was upgraded to high calorific coal and stabilized by spray coating of heavy oil. It was identified that spray coating of heavy oil after drying coal is the optimum procedure of upgrading low rank coal. The experimental results show that more than 2wt% of heavy oil should be adsorbed on the coal in order to stabilize sufficiently for spontaneous combustion.

키워드

참고문헌

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