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http://dx.doi.org/10.14478/ace.2011.22.5.566

Comparison of Design Concepts for Four Different Entrained-Bed Coal Gasifier Types with CFD Analysis  

Yun, Yongseung (Plant Engineering Center, Institute for Advanced Engineering)
Ju, Jisun (Power Generation Lab., KEPCO Research Institute)
Lee, Seung Jong (Plant Engineering Center, Institute for Advanced Engineering)
Publication Information
Applied Chemistry for Engineering / v.22, no.5, 2011 , pp. 566-574 More about this Journal
Abstract
Coal gasifier is a key component for achieving high efficiency in integrated gasification combined cycle and indirect coal liquefaction. Although there have been several successful coal gasifiers that were commercially proven, many different design configurations are still possible for a simple and reliable gasifier operation. Four different gasifier design concepts of dry-feeding were compared in terms of residence time, exit syngas temperature and syngas composition. First, cold-flow simulation was applied to pre-select the configuration concepts, and the hot-flow simulation including chemical reactions was performed to compare the concepts at more actual gasifier operating conditions. There are many limitations in applying CFD method in gasifier design, particularly in estimating slag behavior and slag-tap design. However, the CFD analysis proved to be useful in comparing the widely different gasifier design concepts as a pre-selection tool.
Keywords
gasifier; design; CFD; entrained-bed; residence time;
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Times Cited By KSCI : 3  (Citation Analysis)
Times Cited By SCOPUS : 0
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