Berty-type internal recycle reactors offer great opportunities for screening catalysts and reproducing catalytic reacting conditions in multiple processes, thus approaching industrial reactions while amplifying kinetic information. However, the rational design of these reactors requires a deeper understanding of their governing hydrodynamics and equations so that they can be better utilized in batch or continuous mode or as packed or fluidized beds. In this work, by adopting a slice model to represent a three-dimensional symmetric geometry with porous zone settings for catalyst beds, coupled with a species transport model, multiple reference frame, and SST k–ω turbulence model, we developed a computational fluid dynamic simulation strategy of a commercial Berty reactor manufactured by Integrated Lab Solutions (ILS). We conducted experiments to validate the proposed modeling approach under continuous packed bed operations, through which the hydrodynamic behaviors with packed/fluidized beds under the batch mode were also investigated by studying the influences of the transient injection, bed porosities, and rotation rates. As a result, we reported a set of equations to assess the bed velocity and contact time under different porosities, which simplified the performance improvements while replacing the need to perform complex simulations or conduct costly experiments. On the grounds of these hydrodynamic simulations and under various operating conditions, we discussed the pertinence of these instruments for intrinsic kinetic measurements in the batch/continuous or packed/fluidized bed operational modes.

中文翻译：

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间歇/连续或填充/流化床模式的内部循环伯蒂催化反应器的流体动力学特性

伯蒂型内部循环反应器为筛选催化剂和在多个过程中再现催化反应条件提供了巨大的机会，从而在放大动力学信息的同时接近工业反应。然而，这些反应器的合理设计需要更深入地了解它们的控制流体动力学和方程，以便它们可以更好地以间歇或连续模式或作为填充床或流化床使用。在这项工作中，通过采用切片模型来表示具有用于催化剂床的多孔区设置的三维对称几何结构，并结合物质传输模型、多参考系和 SST k–ω 湍流模型，我们开发了由 Integrated Lab Solutions (ILS) 制造的商用 Berty 反应器的计算流体动力学模拟策略。我们进行了实验以验证在连续填充床操作下提出的建模方法，通过该方法还通过研究瞬态注入、床孔隙率和旋转速率的影响来研究间歇模式下填充/流化床的流体动力学行为。因此，我们报告了一组方程来评估不同孔隙率下的床速度和接触时间，这简化了性能改进，同时取代了执行复杂模拟或进行昂贵实验的需要。基于这些流体动力学模拟和在各种操作条件下，