Gas-liquid mass transfer studies: The influence of single- and double-impeller configurations in stirred tanks
Gas-liquid mass transfer studies: The influence of single- and double-impeller configurations in stirred tanks
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气液传质研究：搅拌釜中单叶轮和双叶轮配置的影响
DOI：
10.1007/s11814-017-0266-z
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发表时间：
2017
影响因子：
2.7
通讯作者：
Zhuang Yingping
中科院分区：
文献类型：
--
作者：
Pan Ao;Xie Minghui;Xia Jianye;Chu Ju;Zhuang Yingping
采用稳态气液体积传质系数(kLa)方法研究了叶轮结构对传质特性的影响。单叶轮配置包括八种叶轮类型（三种径流式叶轮、四种轴流式叶轮和一种混流式叶轮），双叶轮包括三种配置（RT+RT、RT+WHD、WHD+WHD）。对于单叶轮，在相同转速和气体流量下，径流式叶轮的气液传质速率优于轴流式叶轮。径流式叶轮的传质性能（定义为单位功率输入的体积传质系数）也优于轴流式叶轮。在一定气体流量下，相同kLa值下，径流式叶轮和轴流式叶轮的局部气泡尺寸分布相似。对于双叶轮，在一定转速和气体流量下，RT+RT提供最高的传质速率，而WHD+WHD在相同功耗下提供最高的气液传质系数。
The influence of impeller structure on the mass transfer characteristics was studied with the steady-state method for gas-liquid volumetric mass transfer coefficient (kLa). The single-impeller configurations included eight impeller types (three radial flow impellers, four axial flow impellers and one mixed flow impeller), and the doubleimpeller included three configurations (RT+RT, RT+WHD, WHD+WHD). For single-impeller, the gas-liquid mass transfer rates of radial flow impellers were better than those of axial flow impellers under the same rotation speed and gas flow rate. The mass transfer performance (defined as the volumetric mass transfer coefficient per unit power input) of radial flow impellers were also better than that of axial flow impellers. With the same kLa value under a certain gas flow rate, the local bubble size distribution between radial flow impeller and axial flow impeller was similar. As for double impellers, RT+RT provided the highest mass transfer rate under certain rotation speed and gas flow rate, while WHD+WHD gave the highest values of gas-liquid mass transfer coefficient with the same power consumption.
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影响因子：
3.9
作者：
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通讯作者：
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通讯作者：
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影响因子：
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通讯作者：
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影响因子：
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