| 煤颗粒热解的传热传质分析 |
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| 引用本文： | 刘训良,曹欢,王淦,温治.煤颗粒热解的传热传质分析[J].计算物理,2014,31(1):59-66. |
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| 作者姓名： | 刘训良 曹欢 王淦 温治 |
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| 作者单位： | 北京科技大学机械工程学院 热能工程系, 北京 100083 |
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| 基金项目： | 国家自然科学基金(51276015)资助项目 |
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| 摘 要： | 采用分布活化能模型及能量守恒方程对煤颗粒热解的传热传质过程建立数学模型,模型考虑煤热解的吸热效应及挥发分逸出时对流换热的影响.与有关煤粉和大颗粒煤热解的实验数据对比,对模型进行验证.针对煤颗粒的温度变化过程和煤热解过程进行数值分析,研究煤热解的吸热效应、挥发分气体逸出的对流效应、颗粒尺寸等参数的影响.
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| 关 键 词： | 煤热解 传热传质 数学模型 |
| 收稿时间： | 2013-03-22 |
| 修稿时间： | 2013-06-11 |
Numerical Analysis of Heat and Mass Transfer During Pyrolysis of Coal Particle |
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| LIU Xunliang,CAO Huan,WANG Gan,WEN Zhi.Numerical Analysis of Heat and Mass Transfer During Pyrolysis of Coal Particle[J].Chinese Journal of Computational Physics,2014,31(1):59-66. |
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| Authors: | LIU Xunliang CAO Huan WANG Gan WEN Zhi |
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| Institution: | School of Mechanical Engineering, University of Science and Technology of Beijing, Beijing 100083, China |
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| Abstract: | A mathematical model is developed to analyze numerically coal pyrolysis and heat transfer inside a heated coal particle.Endothermic effect of decomposition and transpirational convective heat transfer are taken into account.A coupled comprehensive model was validated with experimental data of pulverized coal and large particles.Then,temperature history and coal pyrolysis of coal particle heated were analyzed numerically.Effects of endothermic of pyrolysis,transpirational convection,volatile content and particle size were investigated to understand physically transient temperature and volatile evolution of coal particle. |
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| Keywords: | coal pyrolysis heat and mass transfer mathematical model |
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