| 气液错流条件下孔口气泡直径的模型预测(英文) |
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| 引用本文： | 刘长军,梁斌,唐盛伟,张海广,闵恩泽. 气液错流条件下孔口气泡直径的模型预测(英文)[J]. 中国化学工程学报, 2010, 18(5): 770-776 |
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| 作者姓名： | 刘长军 梁斌 唐盛伟 张海广 闵恩泽 |
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| 作者单位： | 1. Multi-phases Mass Transfer and Reaction Engineering Laboratory, College of Chemical Engineering, Sichuan University, Chengdu 610065, China;2. SINOPEC CORP. Research Institute of Petroleum Processing, Beijing 100083, China |
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| 基金项目： | Supported by the National Natural Science Foundation of China (20736009) |
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| 摘 要： | The size of initial bubbles is an important factor to the developed bubble size distribution in a gas-liquid contactor. A liquid cross-flow over a sparger can produce smaller bubbles, and hereby enhance the performance of contactor. A one stage model by balancing the forces acting on a growing bubble was developed to describe the formation of the bubble from an orifice exposed to liquid cross-flow. The prediction with this model agrees with the experimental data available in the literatures, and show that orifice size strongly affects the bubble size. It is showed that the shear-lift force, inertia force, surface tension force and buoyancy force are major forces, and a simplified mathematical model was developed, and the detachment bubble diameter can be predicted with accuracy of ±21%.
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| 关 键 词： | bubble formation liquid cross-flow one stage model force balance |
| 收稿时间： | 2009-06-21 |
| 修稿时间： | 2009-6-21 |
A Theoretical Model for the Size Prediction of Single Bubbles Formed under Liquid Cross-flow |
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| LIU Changjun,LIANG Bin,TANG Shengwei,ZHANG Haiguang,MIN Enze. A Theoretical Model for the Size Prediction of Single Bubbles Formed under Liquid Cross-flow[J]. Chinese Journal of Chemical Engineering, 2010, 18(5): 770-776 |
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| Authors: | LIU Changjun LIANG Bin TANG Shengwei ZHANG Haiguang MIN Enze |
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| Affiliation: | 1. Multi-phases Mass Transfer and Reaction Engineering Laboratory, College of Chemical Engineering, Sichuan University, Chengdu 610065, China;2. SINOPEC CORP. Research Institute of Petroleum Processing, Beijing 100083, China |
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| Abstract: | The size of initial bubbles is an important factor to the developed bubble size distribution in a gas-liquid contactor. A liquid cross-flow over a sparger can produce smaller bubbles, and hereby enhance the performance of contactor. A one stage model by balancing the forces acting on a growing bubble was developed to describe the formation of the bubble from an orifice exposed to liquid cross-flow. The prediction with this model agrees with the experimental data available in the literatures, and show that orifice size strongly affects the bubble size. It is showed that the shear-lift force, inertia force, surface tension force and buoyancy force are major forces, and a simplified mathematical model was developed, and the detachment bubble diameter can be predicted with accu-racy of <±21%. |
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| Keywords: | bubble formation liquid cross-flow one stage model force balance |
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