Correlations of Mass Transfer Coefficients in a Rotating Packed Bed
Correlations of Mass Transfer Coefficients in a Rotating Packed Bed
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DOI：
10.1021/ie101251z
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发表时间：
2011-01
影响因子：
4.2
通讯作者：
Yu‐Shao Chen
中科院分区：
文献类型：
--
作者：
Yu‐Shao Chen
旋转填充床（RPB）在氨和挥发性有机化合物（VOCs）的吸收和汽提中的有用性已经被研究，并且在文献中已经提出了许多总传质系数（KGa）的关联式。然而，这些相关性不提供可接受的预测有关其他实验系统。在这项研究中，一个本地的气体侧传质系数（KGa）在旋转床的计算和经验相关性，提出了430 KGa实验数据的基础上收集的文献。结果表明，在双膜理论的帮助下，利用我们先前工作（Chen，Lin et al. 2006）中报道的局部液侧传质系数（kLa）的关联式，可以合理地预测大部分实验KGa数据。气体流速、液体流速、液体粘度和离心加速度对KGa的影响取决于气相和液相中传质阻力的比值。
The usefulness of a rotating packed bed (RPB) in the absorption and stripping of ammonia and volatile organic compounds (VOCs) has been examined, and numerous correlations of the overall mass transfer coefficient (KGa) have been proposed in the literature. However, these correlations do not provide acceptable predictions concerning other experimental systems. In this study, a local gas-side mass transfer coefficient (kGa) in an RPB is calculated and an empirical correlation is proposed, based on 430 experimental KGa data gathered from the literature. Results showed that, with the aid of the two-film theory and the correlation of the local liquid-side mass transfer coefficient (kLa) reported in our previous work (Chen, Lin et al. 2006), most of the experimental KGa data could be reasonably predicted. The effects of gas flow rate, liquid flow rate, liquid viscosity, and centrifugal acceleration on KGa were found to depend on the ratio of the mass transfer resistances in the gas phase and the liquid phase.