Journal of Energy Engineering (에너지공학)

The Korean Society for Energy (한국에너지학회)
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A Experimental Study of Oxidation Kinetics for a Sub-Bituminous Coal Char

아 역청탄 촤 산화 반응속도론에 관한 실험적 연구

  • Kang, Ki-Tae (Graduate School of Mechanical Engineering, Pusan National University) ;
  • Song, Ju-Hun (School of Mechanical Engineering, Pusan National University) ;
  • Lee, Chuen-Sueng (Graduate School of Mechanical Engineering, Pusan National University) ;
  • Chang, Young-June (School of Mechanical Engineering, Pusan National University) ;
  • Jeon, Chung-Hwan (School of Mechanical Engineering, Pusan National University)
  • 강기태 (부산대학교 기계공학부 대학원) ;
  • 송주헌 (부산대학교 기계공학부) ;
  • 이천성 (부산대학교 기계공학부 대학원) ;
  • 장영준 (부산대학교 기계공학부) ;
  • 전충환 (부산대학교 기계공학부)
  • Received : 2009.06.29
  • Accepted : 2009.11.26
  • Published : 2009.12.31
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Abstract

A fundamental investigation has been conducted on the combustion of single particle of a sub-bituminous coal char burning at different temperatures and residence times. The lab-scale test setup consisted of a drop tube furnace where gas temperatures varied from $900^{\circ}C$ to $1400^{\circ}C$. A calibrated two color pyrometer, mounted on the top of the furnace, provided temperature profiles of luminous particle during a char oxidation. An amount of char mass reacted during the reaction is measured with thermogravimetry analyzer by using an ash tracer method. As a result, mass and area reactivity as well as reaction rate coefficients are determined for the char burning at atmospheric pressure condition.

본 논문에서는 주위 가스 온도와 체류시간에 따른 아 역청탄 촤 입자의 연소 특성에 관한 기본적인 연구를 진행하였다. 실험용 장비로써 노 내 온도 범위가 $900^{\circ}C$에서 $1400^{\circ}C$까지 조절이 가능한 DTF(drop tube furnace)를 설치하였고, 온도가 보정된 two color pyrometer를 DTF의상부에 장착하여 촤가 산화할 때의 입자 온도를 측정할 수 있게 하였다. 촤 산화 시 반응한 총 질량을 구하기 위해 열중량 분석기를 사용하였으며, 회분 추적법을 통해분석하였다. 이를 통해대기압 조건에서 촤가산화 할때질량 및 면적 반응성, 반응속도 상수들을 결정하였다.

Keywords

References

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