Investigation of effective interfacial area in a rotating packed bed with structured stainless steel wire mesh packing
Investigation of effective interfacial area in a rotating packed bed with structured stainless steel wire mesh packing
复制标题
具有结构化不锈钢丝网填料的旋转填料床中有效界面面积的研究
DOI：
10.1016/j.ces.2016.10.023
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发表时间：
2017
影响因子：
4.7
通讯作者：
Chen Jian-Feng
中科院分区：
文献类型：
--
作者：
Luo Yong;Luo Jiang-Zhou;Chu Guang-Wen;Zhao Zhi-Qiang;Arowo Moses;Chen Jian-Feng
旋转填料床是强化过程的重要气液反应器或接触器，填料对床内的传质和混合起着重要的作用。不锈钢丝网填料在旋转床中具有良好的传质性能。但其施工重复性和机械强度有待提高。为此，我们设计了一种新型规整不锈钢丝网填料，旨在克服上述问题。本文采用NaOH-CO2传质系统，研究了四种不同结构不锈钢丝网填料的旋转床在不同转速、气液流量下填料区和空腔区的有效界面面积。对气液传质界面面积（A）和填料比表面积利用率（WP）进行了简要分析。提出了不锈钢丝网填料旋转床填料区有效界面面积的修正关联式，其预测值与实验值吻合较好，偏差一般在± 15%以内。
Packing plays an important role on the mass transfer and mixing in a rotating packed bed (RPB) which is regarded as an important gas-liquid reactor or contactor for process intensification. Stainless steel wire mesh packing exhibits good mass transfer performance when applied in a RPB. However, its construction repeatability and mechanical strength should be improved. Therefore, we introduced and designed a novel structured stainless steel wire mesh packing, aiming to overcome the above problems. In this work, the effective interfacial area (ae) in the packing and cavity zones of a RPB with four different types of structured stainless steel wire mesh packings was investigated at various rotational speeds, gas flow rates, and liquid flow rates by using a NaOH-CO2mass transfer system. A brief analysis of the gas-liquid mass transfer interface area (A) and utilization ratio of packing’s specific surface area (wp) is presented. A modified correlation for the effective interfacial area in the packing zone of the RPB with structured stainless steel wire mesh packing was also proposed, and the predicted values were found to be in agreement with the experimental values with deviations generally within ±15%.