한국광물학회지 (Journal of the Mineralogical Society of Korea)

  • 제23권3호
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  • Pages.199-209
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  • 2010
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  • 1225-309X(pISSN)
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  • 2288-7172(eISSN)
한국광물학회 (The Mineralogical Society of Korea)
권호 표지

석탄가스화를 위한 중국산 저급 석탄의 광물학적 및 건조 특성

Mineralogical and Drying Characteristics of Chinese Low Rank Coal for Coal Gasification

  • 박종력 (한국지질자원연구원 광물자원연구본부) ;
  • 김병곤 (한국지질자원연구원 광물자원연구본부) ;
  • 전호석 (한국지질자원연구원 광물자원연구본부) ;
  • 김상배 (한국지질자원연구원 광물자원연구본부) ;
  • 박석환 (한국지질자원연구원 광물자원연구본부) ;
  • 이재령 (강원대학교 에너지자원공학과)
  • Park, Chong-Lyuck (Mineral Resources Research division, Korea Institute of Geoscience and Mineral Resources) ;
  • Kim, Byoung-Gon (Mineral Resources Research division, Korea Institute of Geoscience and Mineral Resources) ;
  • Jeon, Ho-Seok (Mineral Resources Research division, Korea Institute of Geoscience and Mineral Resources) ;
  • Kim, Sang-Bae (Mineral Resources Research division, Korea Institute of Geoscience and Mineral Resources) ;
  • Park, Suk-Hwan (Mineral Resources Research division, Korea Institute of Geoscience and Mineral Resources) ;
  • Lee, Jae-Ryeong (Department of Energy & Mineral Resources Engineering, Kangwon National University)
  • 투고 : 2010.09.07
  • 심사 : 2010.09.15
  • 발행 : 2010.09.30
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초록

석탄가스화는 청정석탄이용기술의 한 분야로 최근 국제 유가의 급격한 변동과 더불어 매우 각광을 받고 있는 기술이다. 본 연구에서는 중국 내몽고 지역의 저급석탄을 출발물질로 가스화를 위한 광학적 특성, X선 분광특성, X선 회절특성, 광물학적 특성, 건조특성 등을 분석하였다. 분석결과 석탄의 등급은 slagging성과 fouling성이 매우 낮으며 착화온도가 $250^{\circ}C$ 정도인 brown coal인 것으로 조사되었고, 석영, 능철석, 점토광물 등이 주요 불순물로 혼재하는 것을 알 수 있었다. 또한 초기 수분이 28%로 매우 높기 때문에 이를 쉽게 건조하기 위한 방법으로 열풍건조와 마이크로웨이브 건조기술을 적용하여 비교한 결과, 마이크로웨이브를 이용한 건조가 좀 더 효과적인 것을 알 수 있었다.

Coal gasification technology in the sector of domestic clean coal technologies is being into the limelight since recent dramatic rise of international oil price. In this study, we used a low rank coal from Inner Mongolia, China as a starting material for gasification. Various properties including optical, mineralogical, X-ray spectroscopic, X-ray diffraction, and drying property were measured and tested in order to estimate the suitability of the coal to gasification. The coal was identified as a brown coal of lignite group from the measurement of vitrinite reflectance. The coal has very low slagging and fouling potentials, and the ignition temperature is about $250^{\circ}C$. The major impurities consist of quartz, siderite, and clay minerals. Additionally, the coal had moisture content above 28%. Tests for finding effective drying method showed that the microwave drying is more effective than thermal drying.

키워드

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