Simulation of large coal particles pyrolysis by circulating ash heat carrier toward the axial dimension of the moving bed
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- 作者：Ya-Qing Zhang ; Jia-Long Zhu ; Xiao-Hang Wang ; Xi-Wang Zhang ; Shi-Xue Zhou ; Peng Liang ; liangpeng202@hotmail.com" class="auth_mail" title="E-mail the corresponding author
- 关键词：Coal pyrolysis ; Solid heat carrier ; Large coal particle ; Heat transfer ; Volatile evolution
- 刊名：Fuel Processing Technology
- 出版年：2016
- 出版时间：15 December 2016
- 年：2016
- 卷：154
- 期：Complete
- 页码：227-234
- 全文大小：622 K
文摘
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A mathematical model for large coal pyrolysis using ash heat carrier is developed.
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There is a significant temperature gradient inside the large coal particles.
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Devolatilization process has a transient delay compared with the heating process.
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3–4 min design residence time of the moving bed pyrolyzer is reasonable.
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The model can be applied to different coal species.
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