Reduction of unburned carbon derived from coal-fired power plant by changing operating conditions

운전조건병경에 의한 미분탄화력의 미연분 저감

  • 박호영 (한국전력공사 전력연구원 연소열공학그룹) ;
  • 김영주 (한국전력공사 전력연구원 연소열공학그룹) ;
  • 유근실 (한국전력공사 전력연구원 연소열공학그룹) ;
  • 김춘근 (한국남동발전(주) 영흥화력본부) ;
  • 김동훈 (한국남동발전(주) 영흥화력본부)
  • Published : 2006.10.20

Abstract

From the analysis of fly ash, which contains unburned carbon, collected from the coal-fired Yong Hung power station, most particles are turned out to be hollow cenosphere and agglomerated soot particles. The sooting potential from six coals used in the plant were investigated with CPD model. The results show that the higher potential presented to Peabody, Arthur, Shenhua coals rather than other coals. It is necessary to measure the coal flow rates at each coal feeding pipe for four burner levels since they affect the extent of mixing of soot with oxidant, in turn, the oxidation rate of soot particles. The unbalance in coal flow rate was found in several coal pipes. We successfully reduced unburned carbon in ash by increasing the excess air and changing the SOFA yaw angle.

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