한국연소학회지 (Journal of the Korean Society of Combustion)
- 제11권2호
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- Pages.1-6
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- 2006
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- 1226-0959(pISSN)
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- 2466-2089(eISSN)
고효율 화염 안정형 접선식 석탄 버너 개발
The Development of High Performance Flame Stability(HPFS) Tangential Coal-Fired Burner
- 발행 : 2006.06.30
초록
This report presents a study of the development of an advanced coal nozzle used in burners to reduce unburned carbon (UBC) in a tangential coal-fired boiler. To understand the mechanism of UBC reduction, experiments using conventional burners were carried out to evaluate the effects of air injection velocity, coal fineness and over fired air (OFA) on combustion efficiency. It was confirmed that ignition of pulverized coal particles close to the burner is helpful toward the complete burn of residual carbon in fly ash. These efforts indicated the additional results that UBC was strongly dependent on the primary air velocity and coal fineness; especially that UBC dramatically decreased when the weight fraction of pulverized coal under
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