| 变孔径颗粒分布板的颗粒分布性能实验研究 |
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| 引用本文： | 袁达.变孔径颗粒分布板的颗粒分布性能实验研究[J].河北工业大学学报,2009,38(3). |
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| 作者姓名： | 袁达 |
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| 作者单位： | 河北省科技成果转化服务中心,河北,石家庄,050021 |
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| 基金项目： | 河北省教育厅计划项目 |
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| 摘 要： | 设计了一种用于液固循环流化床换热装置的变孔径颗粒分布板,在具有18根换热管的实验装置上,利用自行研制的CCD图像采集系统对安装该分布板的颗粒分布性能进行了测试,考察了颗粒体积分率、循环流量等对颗粒分布性能的影响.实验结果表明:在流化床的进口段管箱内安装变孔径分布板时,随着固体颗粒体积分率的增加,颗粒浓度径向分布明显趋于均匀;在同一分布板安装高度下,大流量更易于实现颗粒的均匀分布,并且使得颗粒流速在床层截面的径向分布较为均匀.结果证明变孔径颗粒分布板的颗粒分布性能优良,为液固循环流化床换热装置的工程设计提供了参考.
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| 关 键 词： | 液固流化床 分布板 颗粒分布 不均匀度 固含率 |
Experimental Study of Particle Distributing Performance on Variable Aperture Particle Distributor |
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| YUAN Da.Experimental Study of Particle Distributing Performance on Variable Aperture Particle Distributor[J].Journal of Hebei University of Technology,2009,38(3). |
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| Authors: | YUAN Da |
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| Affiliation: | Hebei Scientific and Technological Achievement Transformation Service Center;Hebei Shijiazhuang 050021;China |
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| Abstract: | A variable aperture particle distributor for multi-pipe heat exchanger was designed.The CCD image measurement and data processing system was used to study particle distributing performance.The influence of particle volume content and liquid circulation flow on particle distributing performance was discussed.The experimental results show that radial distribution of particles concentration is more uniform with increase of particle volume content,when variable aperture particle distributor was fixed in inlet c... |
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| Keywords: | liquid-solid circulating fluidized bed distributor particle distribution nonuniform solid holdup |
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