Transactions of the Korean Society of Mechanical Engineers B (대한기계학회논문집B)

The Korean Society of Mechanical Engineers (대한기계학회)
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Determination of Char Oxidation Rates with Different Analytical Methods

국내 수입탄 촤의 산화반응률 측정을 위한 해석기법 비교

  • 이병화 (부산대학교 대학원 기계공학과) ;
  • 송주헌 (부산대학교 기계공학부) ;
  • 강기태 (부산대학교 대학원 기계공학과) ;
  • 장영준 (부산대학교 기계공학부) ;
  • 전충환 (부산대학교 기계공학부, 화력발전에너지분석센터)
  • Published : 2009.11.01
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Abstract

Char oxidation experiments were performed with a sub-bituminous roto-middle coal in the Drop Tube Furnace (DTF) at atmospheric pressure condition. While temperatures varied between 900, 1100, 1400 $^{\circ}C$, particle size, mass, particle temperature, and CO/$CO_2$ concentration were obtained to be used for kinetic analysis of the char oxidation. This study addresses several different methods to analyze the char consumption rate, which are classified as energy balance method, ash-traced mass method, flue-gas based method, and particle size based method. The char consumption rate obtained with such methods was compared with the results of Monson et al.$^{(24)}$ While there are some differences between them because of differences in experimental apparatus and parameters to be measured, the kinetic results seems to be reasonable enough to be incorporated in a numerical modeling of coal combustion.

Keywords

References

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