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http://dx.doi.org/10.5855/ENERGY.2012.21.1.068

Characteristics of Unburned Material Derived from Coal-fired Power Plant Burning Low Grade Coal  

Park, Ho-Young (Green Energy Lab. Korea Electric Power Research Institute, KEPCO)
Kim, Young-Ju (Green Energy Lab. Korea Electric Power Research Institute, KEPCO)
Kim, Tae-Hyung (Green Energy Lab. Korea Electric Power Research Institute, KEPCO)
Baek, Se-Hyun (Green Energy Lab. Korea Electric Power Research Institute, KEPCO)
Kim, Kyung-Soo (Green Energy Lab. Korea Electric Power Research Institute, KEPCO)
Jeoung, Kwon-Dal (Combustion Technology Center, Hadong Thermal Power Division, Korea Southern Power)
Publication Information
Journal of Energy Engineering / v.21, no.1, 2012 , pp. 68-74 More about this Journal
Abstract
Sub-bituminous coals have been used increasingly in coal-fired power plants with a proportion of over 50% in the blend with bituminous coals. As a result, the unburned material in fly ash has increased and is causing problems in utilizing the fly ash as an additive for concrete production. In this study, analysis of fly ash obtained from a 500 MWe power plant was carried out and unburned material in the fly ash found to be soot. The coals used in the plant were analyzed with CPD model to investigate the sooting potential depending on the coal type and blending ratio.
Keywords
Boiler; Fly ash; Low grade coal; Soot;
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  • Reference
1 Seeker, W.R., Samuelsen, G.S., Heap, M.P., Ptolinger, J.D., "Thermal decomposition of pulverized coal particles", 18th symposium (International) on combustion, The combustion institute, Pittsburgh, 1213 (1980).
2 Nenniger, R.D., Howard, J.B., Sarofim, A.F., "Sooting potential of coals, International conference on coal science, Pittsburgh, 521 (1983).
3 Timothy, L.D., Froelich, D., Sarofim, A.F. and Beer, J.M., "Soot formation and burnout during the combustion of dispersed pulverised coal particles", Twenty-First Symposium (International) on Combustion, The Combustion Institute, Pittsburgh, 1141 (1986).
4 Ma, J., Fletcher, T.H. and Webb, B.W., "Conversion of coal tar to soot during coal pyrolysis in a postflame environment", Twenty-sixth Symposium (International) on Combustion, The Combustion Institute, Pittsburgh, 3161 (1996).
5 Brown, A.L., Fletcher, T.H., "Modeling soot in coal combustion flames", Western states section of the combustion institute, Los angeles, CA (1996).
6 Smoot, L.D., "Fundamentals of coal combustion for clean and efficient use", Elsevieer Science, Amsterdam (1993).
7 Xu, W. and Tomita, A., "Effect of coal type on the flash pyrolysis of various coals", Fuel, 66, 632 (1987).   DOI
8 김상돈, "석탄에너지변환기술", 민음사 (1985).
9 한국전력공사, "석탄회 이용가치와 재활용 기술" (1994).
10 여수대학교 환경문제연구소, "석탄회의 재활용 타당성 조사" (2000).
11 대한 주택공사 주택연구소, "플라이애쉬 콘크리트의 특성 및 적용성에 관한 연구" (1999).
12 박호영, 김영주, 유근실, 김춘근, 김동훈, "석탄화력발전소에서 발생하는 미연분의 특성분석 및 저감방법", 대한환경공학회 논문집 28, 1065-1073 (2006).
13 Serio,M.A., Hamblen, D.G., Markham, J.R., Solomon, P.R., "Kinetics of volatile product evolution in coal pyrolysis: Experiment and theory", Energy and Fuels, 1, 138 (1987).   DOI
14 Solomon, P.R., Serio, M. A. and Suuberg, E.M., "Coal Pyrolysis: Experiments, Kinetic Rates and Mechanisms", Progress in Energy and Combustion Science, 18, 133 (1992).   DOI
15 Fletcher, T.H, Ma, J., Rigby, J.R., Brown, A.L. and Webb, B.W., "Soot in coal combustion system", Progress in Energy and Combustion Science, 23, 283 (1997).   DOI
16 Bradley, D,. Lawes, M., Ho Young Park, Usta, N., "Modeling of laminar pulverized coal flames with speciated devolatilization and comparisons with experiments", Combustion and Flame144, pp. 190-204 (2006).   DOI
17 Lau, C.W. and Niksa, S., "The impact of soot on the combustion characteristics of coal particles of various types", Combustion and Flame, 95, 1 (1993).   DOI