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http://dx.doi.org/10.9713/kcer.2019.57.6.853

Evaluation of Limestone for In-Situ Desulfurization in CFB Boilers  

Lee, See Hoon (Department of Mineral Resources Energy Engineering, Chonbuk National University)
Kim, Dong Won (KEPCO Research Institute)
Lee, Jong Min (KEPCO Research Institute)
Bae, Yong Chae (KEPCO Research Institute)
Publication Information
Korean Chemical Engineering Research / v.57, no.6, 2019 , pp. 853-860 More about this Journal
Abstract
In order to meet more severe environmental regulations, oxy-fuel circulating fluidized bed(CFB) boilers or ultra supercritical CFB boilers, which are a kind of process in that solid particles moves similar to fluid, have been developed in the world. In CFB power generation processes, the method to reduce or remove sulfur dioxide is in-situ desulfurization reaction via limestone directly injected into CFB boilers. However, the desulfurization efficiencies have continuously changed because limestones injected into CFB boilers are affected by various operation conditions (Bed temperature, pressure, solid circulating rate, solid holdup, residence time, and so on). In this study, a prediction method with physical and chemical properties of limestone and operation conditions of CFB boiler for in-situ desulfurization reaction in CFB boilers has developed by integrating desulfurization kinetic equations and hydrodynamics equations for CFB previously published. In particular, the prediction equation for in-situ desulfurization was modified by using experimental results from desulfurization reactions of various domestic limestones.
Keywords
Desulfurization; Circulating Fluidized Bed; Limestone; Empirical equation;
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Times Cited By KSCI : 11  (Citation Analysis)
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