Wire mesh packing has been extensively utilized in laboratory and industry applications in rotating packed bed (RPB) because of the high mass transfer performance and low cost. Conventional wire mesh packings formed by the coiling meshes with constant porosity have an increasing cross-sectional area along the radial direction, which affects the fluid flow behavior and mass transfer performance. Herein, wire mesh packings with controllable cross-sectional area were designed and rapidly fabricated using the three-dimensional (3D) printing technology. Gas–liquid mass transfer efficiencies of wire mesh packings with various structures and cross-sectional areas were evaluated. The gas–liquid effective interfacial area (a_e) and liquid-side volumetric mass transfer coefficient (k_La_e) of the concentric wire mesh packing with constant cross-sectional area were, respectively, 25.5 and 14.7% higher than those of the coiled one with increasing cross-sectional area. The correlations for prediction of a_e and k_La_e, considering previous and current data, were respectively established with acceptable deviations.

中文翻译：

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旋转填料床中具有可控制横截面积的新型丝网填料：传质研究

丝网填料由于其高传质性能和低成本而已在实验室和工业应用中广泛用于旋转填料床（RPB）中。由具有恒定孔隙率的盘绕网形成的常规金属丝网填料沿径向方向具有增大的横截面积，这影响了流体的流动行为和传质性能。本文中，使用三维（3D）打印技术设计并快速制造了横截面积可控的丝网填料。评估了具有不同结构和横截面积的丝网填料的气液传质效率。气液有效界面面积（a _e）和液侧体积传质系数（k具有恒定横截面面积的同心金属丝网填料的_l a _e）分别比具有增大横截面面积的盘绕金属丝网填料的_l a _e）高25.5和14.7％。为预测的相关性一_ë和ķ_大号一个_ê，考虑先前和当前数据，分别具有可接受的偏差建立。