Clean Technology (청정기술)

The Korean Society of Clean Technology (한국청정기술학회)
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Stabilization Characteristics of Upgraded Coal Using Palm Oil Residues

팜 잔사유를 이용한 고품위화 석탄의 안정화 특성분석

  • Park, In Su (Clean Fuel Center, Korea Institute of Energy Research) ;
  • Chun, Dong Hyuk (Clean Fuel Center, Korea Institute of Energy Research) ;
  • Jo, Wan Taek (Clean Fuel Center, Korea Institute of Energy Research) ;
  • You, Ji Ho (Clean Fuel Center, Korea Institute of Energy Research) ;
  • Lee, Si Hyun (Clean Fuel Center, Korea Institute of Energy Research) ;
  • Rhee, Young Woo (Graduate School of Green Energy Technology, Chungnam National University)
  • 박인수 (한국에너지기술연구원 청정연료연구단) ;
  • 전동혁 (한국에너지기술연구원 청정연료연구단) ;
  • 조완택 (한국에너지기술연구원 청정연료연구단) ;
  • 유지호 (한국에너지기술연구원 청정연료연구단) ;
  • 이시훈 (한국에너지기술연구원 청정연료연구단) ;
  • 이영우 (충남대학교 녹색에너지기술전문대학원)
  • Received : 2013.09.09
  • Accepted : 2013.10.01
  • Published : 2013.12.31
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Abstract

In this research, the stabilization characteristics of upgraded coal using palm oil residues were investigated. The Eco coal, which is the Indonesian low-rank coal, was used as a raw material. The low-rank coal was mixed with palm fatty acid distillate (PFAD), and then dried in a nitrogen atmosphere at $107^{\circ}C$. The trend of spontaneous combustion of upgraded coal was studied by measuring of crossing-point temperature (CPT), low temperature oxidation and moisture readsorption. The results of the CPT measuring and low temperature oxidation showed that the propensity of spontaneous combustion of the upgraded coal was improved compared to the dried coal. The moisture readsorption characteristics of the upgraded coal was also improved. The upgraded coal was stabilized through the surface coating with PFAD, and stability of upgraded coal was proportional to the content of PFAD.

본 연구에서는 팜 잔사유를 이용하여 고품위화된 저등급 석탄의 건조 안정화 특성을 알아보았다. 인도네시아 저등급 석탄인 에코탄을 사용하였고, 팜지방산증류물(palm fatty acid distillate, PFAD)을 혼합시킨 후 $107^{\circ}C$ 질소분위기에서 건조하였으며 그 후에 안정화 특성을 평가하였다. 교차점온도(crossing-point temperature, CPT) 측정을 통해 자연발화 경향을 확인하였으며, 저온산화 실험을 통해 $CO_2$, CO 가스 배출량은 건조석탄보다 고품위 석탄이 감소하는 것을 확인하였다. 수분 재흡착 실험을 통해 고품위 석탄이 대기방치와 항온항습 분위기에서 수분 재흡착이 줄어드는 것을 확인하였다. 고품위화된 석탄은 PFAD의 표면코팅을 통해 안정화 되며, 함량이 증가할수록 안정화도가 높아졌다.

Keywords

References

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Cited by

  1. Drying Characteristics of High Moisture Low Rank Coal using a Steam Fluidized-bed Dryer vol.20, pp.3, 2014, https://doi.org/10.7464/ksct.2014.20.3.321
  2. Feasibility Comparison of Drying and Briquetting Processes Using Palm Oil Residue Based on a Pilot-scale Test with Indonesian Low-rank Coal pp.1939-2702, 2021, https://doi.org/10.1080/19392699.2018.1475355