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Application of computational fluid dynamics to fixed bed adsorption calculations: Effect of hydrodynamics at laboratory and industrial scale

机译：计算流体动力学在固定床吸附计算中的应用：流体动力学在实验室和工业规模上的影响

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摘要

A numerical model has been developed to simulate the adsorption of chemical species inside different geometries of columns filled with solid adsorbent particles. In this model hydrodynamics, mass transfer and adsorption equilibrium are accounted for. It has been applied at two different scales: at the laboratory scale in order to estimate the impact of the near wall channelling effect inside small columns, and at the industrial scale in order to calculate the equivalent axial dispersion induced by pipes or beams that can be found inside very large adsorption towers. For both applications, hydrodynamics were found to have a strong impact on the adsorption efficiency. These examples demonstrate how the use of computational fluid dynamics proves to be very relevant for process design and scale-up of adsorption columns.
机译：已经开发了一个数值模型来模拟填充固体吸附剂颗粒的不同几何形状的色谱柱内化学物质的吸附。在该模型中，考虑了流体动力学，传质和吸附平衡。它已在两个不同的规模上应用：在实验室规模上，以估计小柱内近壁窜动效应的影响;在工业规模上，以计算由管道或梁引起的等效轴向色散。发现在非常大的吸附塔内。对于这两种应用，发现流体力学对吸附效率都有很大的影响。这些示例说明了如何使用计算流体动力学证明与过程设计和吸附塔规模放大非常相关。

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