Mass transfer intensification in a rotating packed bed with surface-modified nickel foam packing

Mass transfer intensification in a rotating packed bed with surface-modified nickel foam packing
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采用表面改性泡沫镍填料的旋转填充床中的传质强化

DOI:
10.1016/j.cej.2015.09.083
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发表时间:
2016-02
影响因子:
15.1
通讯作者:
Jian-Feng Chen
Jian-Feng Chen
中科院分区:
工程技术1区
文献类型:
--
作者:
Xiao-Hua Zheng;Guang-Wen Chu;De-Jia Kong;Yong Luo;Jing-Peng Zhang;Hai-Kui Zou;Li-Li Zhang;Jian-Feng Chen

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这项工作研究了配备表面改性泡沫镍填料(SNP)(一种疏水规整填料)的旋转填料床(RPB)中的液体侧控制传质过程。采用CO2-NaOH化学吸收系统测定有效界面面积(a)和液侧传质系数(kL)。由此计算出体积液体侧传质系数(kLa)。研究了旋转速度、液体流速和气体流速对这些传质参数的影响。实验结果表明,与未改性泡沫镍填料(NNP)的RPB相比,带有SNP的RPB具有更高的a和kL,因此表现出更好的传质性能。此外,还通过流动可视化方法探讨了SNP增强RPB中传质的可能机制。
This work examined the liquid-side controlled mass transfer process in a rotating packed bed (RPB) equipped with a surface-modified nickel foam packing (SNP), which is a hydrophobic structured packing. The chemical absorption system CO2–NaOH was used to determine the effective interfacial area (a) and the liquid-side mass transfer coefficient (kL). The volumetric liquid-side mass transfer coefficient (kLa) was thus calculated. Effects of rotational speed, liquid flow rate, and gas flow rate on these mass transfer parameters were investigated. Experimental results show that the RPB with SNP possessed a higheraandkLand thus showed better mass transfer performance in comparison to the RPB with the non-modified nickel foam packing (NNP). Moreover, the possible mechanism for the enhancement of mass transfer in the RPB with SNP was also explored by a flow visualization method.
采用表面改性镍泡沫填料提高旋转填充床反应器中的微混合效率
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