| 气-液-固三相流化床中气泡大小分布的随机模型 |
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| 引用本文： | 张立国,胡宗定.气-液-固三相流化床中气泡大小分布的随机模型[J].化工学报,1990,41(5):546-554. |
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| 作者姓名： | 张立国 胡宗定 |
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| 作者单位： | 天津大学化工系,天津大学化工系,天津大学化工系 天津
,天津
,天津 |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 本文利用马尔柯夫过程理论,建立了一个包括气泡上升速率、气泡大小以及气泡在床内出现位置的随机模型.利用热力学理论分析了模型参数.同时,本文利用四组元组合电导探针测定了气泡大小及其分布密度,验证了随机模型.结果表明,模型值与实验拟合很好.
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| 关 键 词： | 流化床 气泡 气相 固相 液相 |
A Stochastic Model of Bubble Size Distribution in a Three-phase Fluidized Bed |
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| Zhang Liguo,Hu Zongding and Wang Yiping.A Stochastic Model of Bubble Size Distribution in a Three-phase Fluidized Bed[J].Journal of Chemical Industry and Engineering(China),1990,41(5):546-554. |
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| Authors: | Zhang Liguo Hu Zongding and Wang Yiping |
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| Affiliation: | Zhang Liguo,Hu Zongding and Wang Yiping
Department of Chemical Engineering,Tianjin University,Tianjin |
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| Abstract: | In this paper, the theory of Markov chain is used to discuss the behavior of bubbles in G-L-S fluidized bed. A generalized stochastic model is proposed.
On the basis oi thermodynamics, the model parameters were analysed and discussed to obtain a simplified stochastic model of bubble size distribution.
In addition, the distribution of bubble size in a twodimensional G-L-S three-phase fluidized bed were measured by using conductivity probe method and micro-computer sampling technique.
The calculated values with the stochastic model were very close to the experimental data. |
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