한국연소학회:학술대회논문집
- 한국연소학회 2006년도 제33회 KOSCO SYMPOSIUM 논문집
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- Pages.299-303
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- 2006
운전조건병경에 의한 미분탄화력의 미연분 저감
Reduction of unburned carbon derived from coal-fired power plant by changing operating conditions
초록
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.