Journal of the Korean Society of Combustion (한국연소학회지)

The Korean Society of Combustion (한국연소학회)
권호 표지

Experimental Investigation of Burning Pulverized Coal Particles: Emission Analysis and Observation of Particle Sample

연소중 미분탄의 발광 분석 및 입자 채집 관찰

  • 김대희 (한국과학기술원 기계공학과 대학원) ;
  • 최상민 (한국과학기술원 대학원)
  • Received : 2010.03.29
  • Accepted : 2010.06.15
  • Published : 2010.06.30
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Abstract

Combustion behavior of pulverized coal particles in a post-combustion gas reactor was investigated. Radiation emission from coal particles were analyzed by direct photograph and $CH^*$ radical chemiluminescence intensity. Coal particles were sampled during the combustion and were observed by scanning electron microscopy (SEM) and cross section micrograpy technique. Two coal types(one bituminous and one subbituminous coals typically used in the Korean power plants) were tested at typical combustion environment. Gas flow conditions were controlled to represent temperature and oxygen concentration. Experimental data were discussed along with conceptual descriptions of pulverized coal combustion, where particle heat-up, release and combustion of volatiles, and char combustion were sequentially progressed.

Keywords

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