| 低固含率气-液-固循环流化床流动特性 |
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| 引用本文： | 刘建华,刘明言,胡宗定. 低固含率气-液-固循环流化床流动特性[J]. 化工学报, 2013, 64(2): 504-516. DOI: 10.3969/j.issn.0438-1157.2013.02.014 |
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| 作者姓名： | 刘建华 刘明言 胡宗定 |
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| 作者单位： | 1. 天津大学化工学院,天津 300072;2. 化学工程联合国家重点实验室(天津大学),天津 300072 |
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| 摘 要： | 应用基于互补金属氧化物半导体(complementary metal oxide semiconductor,CMOS)传感器的高速图像采集和处理技术,实验研究了低固含率条件下,低密度大孔吸附树脂固体颗粒气-液-固三相循环流化床的流体力学行为,分析了操作条件、液相物性、颗粒性质等对床内的固体颗粒循环速率、相含率、气泡运动等特性的影响,得到了具有合理物理解释的实验数据和结果。
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| 关 键 词： | 大孔树脂颗粒 气-液-固 循环流化床 动力学 低固含率 |
| 收稿时间： | 2012-06-19 |
| 修稿时间： | 2012-08-15 |
Hydrodynamics in gas-liquid-solids circulating fluidized beds with low solids holdups |
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| LIU Jianhua , LIU Mingyan , HU Zongding. Hydrodynamics in gas-liquid-solids circulating fluidized beds with low solids holdups[J]. Journal of Chemical Industry and Engineering(China), 2013, 64(2): 504-516. DOI: 10.3969/j.issn.0438-1157.2013.02.014 |
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| Authors: | LIU Jianhua LIU Mingyan HU Zongding |
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| Affiliation: | 1. School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China;2. State Key Laboratory of Chemical Engineering(Tianjin University), Tianjin 300072, China |
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| Abstract: | Hydrodynamics in gas-liquid-solids circulating fluidized beds with low solids holdups of resin particles was experimentally investigated with a high-speed image measurement and treatment technique of complementary metal oxide semiconductor.Influences of superficial liquid velocity, particle diameter and density, liquid surface tension and viscosity on the phase holdups, average gas bubble diameter, circulating rate of solids particles both in the riser and in the downer and bubble motions were investigated. Experimental data with reasonable physical explanations of the hydrodynamics of gas-liquid-solids circulating fluidized beds were obtained. |
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| Keywords: | macroporous resin particles gas-liquid-solids circulating fluidized bed hydrodynamics low solids holdup |
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