| 多层桨搅拌槽内气-液两相局部气含率研究 |
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| 引用本文： | 高娜,包雨云,高正明.多层桨搅拌槽内气-液两相局部气含率研究[J].高校化学工程学报,2011,25(1):11-17. |
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| 作者姓名： | 高娜 包雨云 高正明 |
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| 作者单位： | 北京化工大学,化学工程学院,北京,100029 |
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| 基金项目： | 国家自然科学基金资助项目(20776008,20821004,20990224) |
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| 摘 要： | 在直径0.48 m的椭圆底搅拌槽中,研究了以半椭圆管盘式涡轮(HEDT)为底桨、上两层为四叶翼型轴流桨下压操作(WHD)的组合桨(HEDT+2WHD)在搅拌槽内沿径向和轴向的局部气含率分布及不同表观气速对局部气含率的影响.局部气含率沿轴向分布比较均匀,仅在底桨附近有一个极大值,其它位置局部气含率差异较小.随着表观气速增...
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| 关 键 词： | 搅拌槽 组合桨 电导探针 下压操作 局部气含率 PIV |
Local Void Fraction in a Sparged Reactor with a Multi-Impeller Agitator |
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| GAO Na,BAO Yu-yun,GAO Zheng-ming.Local Void Fraction in a Sparged Reactor with a Multi-Impeller Agitator[J].Journal of Chemical Engineering of Chinese Universities,2011,25(1):11-17. |
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| Authors: | GAO Na BAO Yu-yun GAO Zheng-ming |
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| Affiliation: | GAO Na,BAO Yu-yun,GAO Zheng-ming(School of Chemical Engineering,Beijing University of Chemical Technology,Beijing 100029,China) |
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| Abstract: | In an agitator tank of 0.48 m diameter equipped with an ellipsoidal bottom cap,the vertical and radial distributions of local void fraction were measured,and the influence of superficial gas velocity on the local void fraction was studied.The triple-impeller used in the agitator tank consists of a hollow half elliptical disk turbine(HEDT) installed below and two down-pumping wide blade hydrofoils(WHD) installed above.In the stirred tank,the vertical local void fraction distributions appear evenly and the da... |
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| Keywords: | stirred tank multiple impeller conductivity probe down-pumping operation local void fraction PIV |
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