Liquid distributors have an important influence on packed towers' hydrodynamics and mass transfer performances. This work has designed a narrow-trough liquid distributor with stepped baffle plates to regulate liquid flow. The liquid mainstream is diverted layer by stepped baffles to realize the uniform distribution of liquid. The relationship between liquid flow and the baffle plates arrangement is studied by computational fluid dynamics (CFD) simulation. Furthermore, we put forward a CFD-based structural optimization scheme to arrange baffle plates in an arc shape, which leads to a uniform and stable flow of each distribution orifice in the range of liquid spray density of 5–120 m³·(m²·h)⁻¹. The simulation results agree with experiments, which proved that the novel liquid distributor has excellent performance. Compared with the traditional trough liquid distributor, the novel liquid distributor can provide more liquid drip points, more gas-phase channels, higher operating flexibility, and take up less space.

中文翻译：

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一种基于计算流体动力学的新型液体分配器研究和优化方法

液体分布器对填料塔的流体动力学和传质性能有重要影响。这项工作设计了一种带有阶梯挡板的窄槽液体分配器来调节液体流量。液体主流通过阶梯式挡板分流层，实现液体的均匀分布。通过计算流体动力学（CFD）模拟研究了液体流动与挡板排列之间的关系。此外，我们提出了一种基于CFD的结构优化方案，将挡板布置成弧形，使得每个分布孔在5-120 m ³ ·(m ² ·h) ^-1. 仿真结果与实验结果一致，证明了新型液体分布器具有优良的性能。与传统的槽式液体分配器相比，新型液体分配器可以提供更多的液体滴点、更多的气相通道、更高的操作灵活性和更小的空间。