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

Kim, Dae-Hee (한국과학기술원 기계공학과 대학원)
Choi, Sang-Min (한국과학기술원 대학원)
Publication Information
Journal of the Korean Society of Combustion / v.15, no.2, 2010 , pp. 19-26 More about this Journal
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
Combustion behavior; Pulverized coal; Cross-section micrography; Scanning electron microscopy (SEM); Volatile release;
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