| 液-固流化床中滤料流场及固含率分布 |
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| 引用本文： | 刘旭晓,张吕鸿,肖红.液-固流化床中滤料流场及固含率分布[J].化学工业与工程,2007,24(3):231-235. |
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| 作者姓名： | 刘旭晓 张吕鸿 肖红 |
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| 作者单位： | 天津大学化工学院,天津,300072 |
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| 摘 要： | 用PV4A测速仪和CFD数值模拟的方法对液-固流化床内滤料(固体颗粒)的流动行为进行了研究,得出了流化床内滤料的流场分布状况.试验结果表明:流化床中铜锌合金(KDF)滤料的运动速度和固含率随流化床高度的增加分别呈现出先上升后下降的趋势;而沿径向从中心至管壁则呈下降趋势.模拟结果显示的固相运动速度和体积分率的轴径向分布趋势与试验测定结果基本吻合.
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| 关 键 词： | 液-固流化床 滤料 固含率 数值模拟 流化床 滤料 流场 固含率分布 Fluidized Bed Solid Holdup Velocity 测定结果 分布趋势 轴径向 体积分率 固相 显示 模拟结果 管壁 中心 加分 高度 运动速度 铜锌合金 |
| 文章编号： | 1004-9533（2007）03-0231-05 |
| 收稿时间： | 2006-01-14 |
| 修稿时间： | 2006年1月14日 |
Distributions of Solid Velocity and Solid Holdup in Liquid-Solid Fluidized Bed |
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| LIU Xu-xiao,ZHANG Lü-hong,XIAO Hong.Distributions of Solid Velocity and Solid Holdup in Liquid-Solid Fluidized Bed[J].Chemical Industry and Engineering,2007,24(3):231-235. |
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| Authors: | LIU Xu-xiao ZHANG Lü-hong XIAO Hong |
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| Affiliation: | School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China |
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| Abstract: | Flow behaviors of KDF filter media(solid) in liquid-solid fluidized bed are studied with PV4A velocity meter and CFD numerical stimulation and flow field distribution of the KDF filter media are obtained.Experimental results show that filter media velocity and solid holdup increases at the beginning and then decreases with the increase of axial position.KDF filter media velocity and solid holdup have a tendency of falling from center to the wall of fluidized bed in different radial position.The simulation results show that the axial and radial distribution tendency of solid velocity and solid holdup in modeling process are consistent with those of experimented results. |
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| Keywords: | liquid-solid fluidized bed filter media solid holdup numerical simulation |
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