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Consecutive Flow Distributor Device for Mesostructured Reactors and Networks of Reactors
Chemical Engineering and Processing: Process Intensification ( IF 3.8 ) Pub Date : 2021-07-11 , DOI: 10.1016/j.cep.2021.108541
Isabel S.O. Barbosa 1 , Ricardo J. Santos 1 , Cláudia G. Silva 1 , Margarida S.C.A. Brito 1
Affiliation  

A manifold is introduced for homogeneous flow distribution to feed arrays of mesoreators or mesostructured networks of reactors. The flow distributor, hereafter the channelCOMB, consists of a main prismatic channel with an array of prismatic outlet channels. The configuration of channelCOMB enables the fabrication from both additive and subtractive manufacturing technologies. The flow distribution in channelCOMB is studied from Computational Fluid Dynamics (CFD) simulations. The parametric design of the device is made with CFD and addresses all the relevant dimensions. The best design of channelCOMB in terms of flow distribution is analysed for fabrication through Additive Manufacturing by stereolithography considering fabrication tolerance typically around ±50µm. A better flow distribution is reached for lower inlet velocity values, larger depth values, smaller expansion ratios from the inlet channel to the main chamber of ChannelCOMB, and narrower outlet chambers. An analytical mechanistic model was developed to calculate the pressure drop inside the device and to determine the outlet channels flow rate distribution. The model was implemented in an optimisation algorithm using Excel solver, and from the model analytical solution using Maple. These computer tools enable the fast design of channelCOMB distributors for multichannel devices and were validated from results of CFD simulations.



中文翻译:

用于细观结构反应器和反应器网络的连续流动分配器装置

引入歧管以实现均匀的流动分布,以进料中观反应器阵列或反应器中观结构网络。流量分配器,以下称为通道COMB,由一个主棱柱通道和一系列棱柱出口通道组成。channelCOMB 的配置使得可以通过增材制造和减材制造技术进行制造。通过计算流体动力学 (CFD) 模拟研究 channelCOMB 中的流量分布。设备的参数化设计是用 CFD 进行的,并解决了所有相关的尺寸问题。考虑到制造公差通常在 ±50μm 左右,分析了 channelCOMB 在流量分布方面的最佳设计,以便通过立体光刻的增材制造进行制造。较低的入口速度值可达到更好的流量分布,较大的深度值,从入口通道到 ChannelCOMB 主室的较小膨胀比,以及更窄的出口室。开发了一种分析机械模型来计算设备内部的压降并确定出口通道的流速分布。该模型使用 Excel 求解器在优化算法中实现,并使用 Maple 从模型解析解中实现。这些计算机工具支持多通道设备的 channelCOMB 分配器的快速设计,并通过 CFD 模拟结果进行验证。该模型使用 Excel 求解器在优化算法中实现,并使用 Maple 从模型解析解中实现。这些计算机工具支持多通道设备的 channelCOMB 分配器的快速设计,并通过 CFD 模拟结果进行验证。该模型使用 Excel 求解器在优化算法中实现,并使用 Maple 从模型解析解中实现。这些计算机工具支持多通道设备的 channelCOMB 分配器的快速设计,并通过 CFD 模拟结果进行验证。

更新日期:2021-07-12
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