Transactions of the Korean Society of Mechanical Engineers (대한기계학회논문집)

The Korean Society of Mechanical Engineers (대한기계학회)
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An Experimental Study on the Combustion Behavior of Single Coal-Water Slurry Droplet

석탄-물 혼합물 단일액적의 연소 특성에 관한 실험적 연구

  • 채재우 (인하대학교 기계공학과) ;
  • 조용철 (인하대학교 기계공학과) ;
  • 전영남 (인하대학교 기계공학과 대학원) ;
  • 한영수 (인하대학교 기계공학과 대학원)
  • Published : 1992.11.01
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Abstract

Coal-water slurry is considered to have the potential for displacing petroleum used in the existing oil-fired industrial and utility boilers. The combustion of coal-water slurry(CWS) is a complex process and little is known about the detailed mechanism. In this paper the combustion behavior of a single suspended droplet of CWS in hot gas stream was investigated. The effect of coal particle size, water content in droplet, initial droplet size, ambient temperature and oxygen fraction in ambient gas were studied. The results are as follows; (1) Increasing the oxygen fraction in ambient gas considerably reduced the char combustion time. (2) The variation of water content and coal particle size in droplet showed little effect on the combustion behavior. (3) In the relatively high temperature ambient gas, the water evaporation time became shorter and the combustion process was stable.

본 연구에서는 CWS 액적의 가열 및 연소에 관한 현상규명에 있어서 액적크기, CWS 석탄함량 및 연소분위기 가스온도, CWS 액적중의 미분된 석탄입자의 크기와 특히 분위기중의 산소농도의 변화에 의한 영향을 파악하고자 한다.

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