| THEORETICAL AND EXPERIMENTAL STUDIES ON BUBBLE DIAMETER AND GAS HOLDUP IN AERATED STIRRED TANKS |
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| 引用本文： | 高正明,王英琛,施力田,傅举孚. THEORETICAL AND EXPERIMENTAL STUDIES ON BUBBLE DIAMETER AND GAS HOLDUP IN AERATED STIRRED TANKS[J]. 中国化学工程学报, 1996, 4(4): 283-289 |
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| 作者姓名： | 高正明 王英琛 施力田 傅举孚 |
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| 作者单位： | Gao Zhengming Wang YingchenShi Litian Fu JufuDepartment of Chemical Engineering，Beijing University of Chemical Technology，Beijing 100029，China |
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| 基金项目： | Supported by the National Nature Science Foundation of China. |
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| 摘 要： | 1 INTRODUCTIONBubble diameter distribution and gas holdup are very important parameters indicatingthe characteristics of gas-liquid dispersion,works done are mostly experimentalobservation.Theoretical analysis of bubble diameter has been mostly focused on thebreak-up of bubbles in the impeller region,and only the theoretical relationship be-tween bubble diameter and operating variables in the impeller region has been reported
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| 关 键 词： | bubble diameter gas holdup mathematical model gas-liquid stirred tank agitated tank |
| 收稿时间： | 1995-06-26 |
| 修稿时间： | 1995-11-30 |
THEORETICAL AND EXPERIMENTAL STUDIES ON BUBBLE DIAMETER AND GAS HOLDUP IN AERATED STIRRED TANKS |
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| GAO Zhengming,WANG Yingchen,SHI Litian,FU Jufu. THEORETICAL AND EXPERIMENTAL STUDIES ON BUBBLE DIAMETER AND GAS HOLDUP IN AERATED STIRRED TANKS[J]. Chinese Journal of Chemical Engineering, 1996, 4(4): 283-289 |
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| Authors: | GAO Zhengming WANG Yingchen SHI Litian FU Jufu |
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| Affiliation: | Department of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China |
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| Abstract: | Experiments were carried out in geometrically similar vessels with diameters of 0.287, 0.495 and 1.1m respectively. Bubble diameter distribution was measured with a dual electric conductivity probe placed in the tanks. Gas holdup was measured by spillover method. Considering the coalescence of bubbles in the upper circulation region of the aeration stirred tank, introducing the concepts of turbulence decay and effective viscosity of gas-liquid system into this work, and taking into account the equilibrium between the surface energy of the bubbles and the energy supplied by agitation, mathematical models for bubble diameter and mean gas holdup were derived. The mathematical models were confirmed by experimental data. |
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| Keywords: | bubble diameter gas holdup mathematical model gas-liquid stirred tank agitated tank |
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