Abstract
The experiments of the fly ash recycle combustion using Guizhou anthracite were carried out in a bench scale circulating fluidized bed (CFB) combustor. Effects of some key operating parameters such as recycle ash to coal mass ratio (Ca to S molar ratio), temperature, reactivation modeof fly ash, circulation rateand fluidization velocity on the desulfurization efficiency were intensively investigated. It is shown that thelimestone utilization efficiency could be improved about 30% with the following operating conditions: the mass ratio of fly ash (reactivated by water and dried at 90°C) to coal was 0.45, the furnace temperature was 880°C, the water to ash mass ratio was 4.5% (the water-to-calcium molar ratio was 0.55) and circulation rate was 18.
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© 2009 Tsinghua University Press, Beijing and Springer-Verlag Berlin Heidelberg
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Li, S.F., Fang, M.X., Yu, B., Wang, Q.H., Luo, Z.Y. (2009). Desulfurization Characteristics of Fly Ash Recirculation and Combustion in the Circulating Fluidized Bed Boiler. In: Yue, G., Zhang, H., Zhao, C., Luo, Z. (eds) Proceedings of the 20th International Conference on Fluidized Bed Combustion. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-02682-9_146
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DOI: https://doi.org/10.1007/978-3-642-02682-9_146
Publisher Name: Springer, Berlin, Heidelberg
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