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Insights into the Impact of Small Particle Liquid Film on the Spatiotemporal Distribution of Suspension in Stirred Reactors
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2024-07-17 , DOI: 10.1021/acs.iecr.4c01444 Hao Chen 1 , Bo Ouyang 1 , Xiu-Guang Yi 2 , Xi-Bao Zhang 1 , Zheng-Hong Luo 1
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2024-07-17 , DOI: 10.1021/acs.iecr.4c01444 Hao Chen 1 , Bo Ouyang 1 , Xiu-Guang Yi 2 , Xi-Bao Zhang 1 , Zheng-Hong Luo 1
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The liquid film has a significant impact on solid–liquid interactions. There is limited research on the effect of liquid film on the distribution of suspended particles in stirred tanks. This study proposes a drag model incorporating particle liquid film and analyzes the effect of liquid film thickness on solid–liquid mixing. First, the formation mechanism of liquid film on the surface of particles, the influence of liquid film on particle dynamics, and interphase forces were introduced. Second, the accuracy of the modified drag model was validated by comparing predicted solid concentration distribution with experimental data and employed to analyze and study the interaction between fluids and solids. The results indicate that the simulation results obtained by the modified model are consistent with the experimental values, with an average relative error of only 9.82%. Furthermore, the results indicate that under low Reynolds number conditions, the influence of particle liquid film thickness is significant. Under high Reynolds number conditions, the influence of liquid film thickness on particle distribution can be ignored.
中文翻译：
深入研究小颗粒液膜对搅拌反应器中悬浮液时空分布的影响
液膜对固液相互作用具有重大影响。关于液膜对搅拌槽内悬浮颗粒分布影响的研究有限。本研究提出了一种包含颗粒液膜的阻力模型，并分析了液膜厚度对固液混合的影响。首先介绍了颗粒表面液膜的形成机理、液膜对颗粒动力学的影响以及相间力。其次，通过将预测的固体浓度分布与实验数据进行比较，验证了修正阻力模型的准确性，并用于分析和研究流体与固体之间的相互作用。结果表明，修正模型得到的模拟结果与实验值一致，平均相对误差仅为9.82%。此外，结果表明，在低雷诺数条件下，颗粒液膜厚度的影响显着。在高雷诺数条件下，液膜厚度对颗粒分布的影响可以忽略不计。
更新日期：2024-07-17
中文翻译：
深入研究小颗粒液膜对搅拌反应器中悬浮液时空分布的影响
液膜对固液相互作用具有重大影响。关于液膜对搅拌槽内悬浮颗粒分布影响的研究有限。本研究提出了一种包含颗粒液膜的阻力模型，并分析了液膜厚度对固液混合的影响。首先介绍了颗粒表面液膜的形成机理、液膜对颗粒动力学的影响以及相间力。其次，通过将预测的固体浓度分布与实验数据进行比较，验证了修正阻力模型的准确性，并用于分析和研究流体与固体之间的相互作用。结果表明，修正模型得到的模拟结果与实验值一致，平均相对误差仅为9.82%。此外，结果表明，在低雷诺数条件下，颗粒液膜厚度的影响显着。在高雷诺数条件下，液膜厚度对颗粒分布的影响可以忽略不计。
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