Assessing the Performance of Hydrotreating Reactor of Diolefin with Different Inlet Configurations via Computational Fluid Dynamics,Industrial & Engineering Chemistry Research

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Assessing the Performance of Hydrotreating Reactor of Diolefin with Different Inlet Configurations via Computational Fluid Dynamics
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2023-07-26 , DOI: 10.1021/acs.iecr.3c00910
Marcos R. M. Penteado ₁ , Pedro E. M. Peres ₁ , Raphael R. C. Santos ₁ , Isabela C. L. Leocadio ₂ , Marcus V. E. Duarte ₂ , José R. Nunhez ₁ , Dirceu Noriler ₁

Affiliation

Liquid maldistribution is an important parameter in the study of fixed bed reactors (FBRs) as it ensures uniformity in the catalytic reactions. The hydrotreating process in this study used a three-dimensional CFD model comparing six different inlet configurations. The model considers the bed porous structure, hydrodynamics, reaction kinetics, and heat and mass transfer. An industrial reactor was simulated using the commercial Ansys Fluent v19.2 CFD package. This study concluded that the performance of the reactor may increase as the flow uniformity improves, as a result of a better configuration in the inlet zone. This was performed by comparing the most frequently used configurations in the literature, and one ideal case was also studied. The rhomboid configuration showed a better result considering the maldistribution factor. As expected due to its flow uniformity, the diolefin conversion of the reactor has an improvement of 8% in comparison to the spiral configuration. The results presented in this work will be useful to optimize the design of existing and new commercial FBRs as well as their performance.

中文翻译：

通过计算流体动力学评估不同入口结构的二烯烃加氢处理反应器的性能

液体分布不均是固定床反应器 (FBR) 研究中的一个重要参数，因为它确保催化反应的均匀性。本研究中的加氢处理过程使用三维 CFD 模型来比较六种不同的入口配置。该模型考虑了床层多孔结构、流体动力学、反应动力学以及传热传质。使用商用 Ansys Fluent v19.2 CFD 软件包模拟工业反应堆。这项研究得出的结论是，由于入口区的配置更好，反应器的性能可能会随着流动均匀性的提高而提高。这是通过比较文献中最常用的配置来完成的，并且还研究了一种理想情况。考虑到分布不均因素，菱形配置显示出更好的结果。由于其流动均匀性，正如预期的那样，与螺旋结构相比，反应器的二烯烃转化率提高了 8%。这项工作中提出的结果将有助于优化现有和新的商业 FBR 的设计及其性能。

更新日期：2023-07-26

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