| 气固并流系统中弥散颗粒混合行为的研究 |
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| 引用本文： | 魏飞,陈卫,金涌,俞芷青.气固并流系统中弥散颗粒混合行为的研究[J].过程工程学报,1996(3). |
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| 作者姓名： | 魏飞 陈卫 金涌 俞芷青 |
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| 作者单位： | 清华大学化工系!北京100084 |
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| 基金项目： | 国家自然科学基金，清华大学基金 |
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| 摘 要： | 采用磷光瞩拉瞬态点源注入示踪技术，研究了气固并流系统中弥散颗粒的轴、径向混合行为，并引入二维扩散模型加以描述，收到了良好的效果。对在气固并流上行和下行系统中的研究进行对比表明：在两种系统中弥散颗粒的轴、径向混合行为类似．研究还给出了在实验条件下气固并流上行系统弥散颗粒的轴、径向Peclet数的关联式．
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| 关 键 词： | 气固并流系统 磷光颗粒示踪 颗粒混合 混合模型 |
LATERAL AND AXIAL MIXING OF THE DISPERSED PARTICLES IN A VERTICAL GAS-SOLID COCURRENT FLOW SYSTEM |
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| Wei Fei ,Chen Wei ,Jin Yong ,Yu Zhiqing.LATERAL AND AXIAL MIXING OF THE DISPERSED PARTICLES IN A VERTICAL GAS-SOLID COCURRENT FLOW SYSTEM[J].Chinese Journal of Process Engineering,1996(3). |
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| Authors: | Wei Fei Chen Wei Jin Yong Yu Zhiqing |
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| Abstract: | The lateral and axial wixing of particles in a vertical gas-solid cocurrent upflow system were measured using the phosphor tracer technique. The measured tracer concentration distribution was satisfactorily described by a two-dimensional dispersion model. Compared with that in the cocurrent dowaflow system, the Peclet numbers for lateral and axial mixing of dispersed particles in the upflow system have about the same value. Correlations of the Peclet numbers under the operating conditions are presented. |
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| Keywords: | Gas-solid cocurrent upflow system Phosphor tracer method Solids mixing model |
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