Optimized Stirred Reactor for Enhanced Particle Dispersion
Optimized Stirred Reactor for Enhanced Particle Dispersion
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DOI：
10.1002/ceat.201500458
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发表时间：
2016-04
影响因子：
2.1
通讯作者：
Steven Wang;Mo Jiang;S. Ibrahim;Jie Wu;Xin Feng;Xiaoxia Duan;Zhao Yang;Chao Yang;N. Ohmura
中科院分区：
文献类型：
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作者：
Steven Wang;Mo Jiang;S. Ibrahim;Jie Wu;Xin Feng;Xiaoxia Duan;Zhao Yang;Chao Yang;N. Ohmura
颗粒的均匀分散对于许多反应速率高度依赖于混合的相对速率或均匀化程度的过程是至关重要的。这些过程包括结晶、聚合和一些矿物精炼过程。对高浓度浆体中颗粒的完全分散进行了实验研究和数值模拟。计算流体动力学结果表明，云高是一个很好的混合均匀性的指标，和能量效率可以提高通过删除挡板在一个范围内的固体浓度下完全分散的条件。通过简单的功率数分析，可以预测在搅拌槽中维持高云高所需的功率。所提出的无挡板设计可以潜在地有益于一些工业过程，如结晶。
Homogeneous dispersion of particles is crucial for many processes where the reaction rate is highly dependent on relative rates of mixing or degree of homogenization. These processes include crystallization, polymerization, and some mineral-refining processes. Complete particle dispersion in high-concentration slurries is researched experimentally and numerically. Computation fluid dynamics results suggest that cloud height is an excellent indicator for mixing homogeneity, and energy efficiency can be enhanced by removing baffles over a range of solids concentrations under the complete dispersion condition. The power required to maintain a high cloud height in a stirred tank can be predicted via a simple power number analysis. The proposed unbaffled design can be potentially beneficial to some industrial processes like crystallization.