Mass transfer in gas-liquid stirred reactor with various triple-impeller combinations

Jinjin Zhang; Zhengming Gao; Yating Cai; Ziqi Cai; Jie Yang; Yuyun Bao

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Mass transfer in gas-liquid stirred reactor with various triple-impeller combinations

第25届中国过程控制会议专栏 | Updated：2026-01-06

- Mass transfer in gas-liquid stirred reactor with various triple-impeller combinations
- Mass transfer in gas-liquid stirred reactor with various triple-impeller combinations
- 中国化学工程学报（英文版） 2016年第6期页码：703-710
- Affiliations：
  
  1. State Key Laboratory of Chemical Resource Engineering, School of Chemical Engineering, Beijing University of Chemical Technology,Beijing,China,100029
  2. 2 School of Chemical Engineering, Shandong University of Technology,Zibo,China,255000
- Author bio：
- Funds：
  
  Supported by the National Natural Science Foundation of China (21206002, 21376016).
- DOI：
  中图分类号：
- 纸质出版：2016
- Accepted：
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Jinjin Zhang, Zhengming Gao, Yating Cai, 等. Mass transfer in gas-liquid stirred reactor with various triple-impeller combinations[J]. 中国化学工程学报（英文版）, 2016,(6):703-710.

Jinjin Zhang, Zhengming Gao, Yating Cai, et al. Mass transfer in gas-liquid stirred reactor with various triple-impeller combinations[J]. Chinese Journal of Chemical Engineering, 2016, (6): 703-710.
Jinjin Zhang, Zhengming Gao, Yating Cai, 等. Mass transfer in gas-liquid stirred reactor with various triple-impeller combinations[J]. 中国化学工程学报（英文版）, 2016,(6):703-710. DOI：

Jinjin Zhang, Zhengming Gao, Yating Cai, et al. Mass transfer in gas-liquid stirred reactor with various triple-impeller combinations[J]. Chinese Journal of Chemical Engineering, 2016, (6): 703-710. DOI：

摘要

Abstract

The gassed power demand and volumetric mass transfer coefficient (k

α) were investigated in a fully baffled

dished-base stirred vessel with a diameter of 0.30 m agitated by five triple-impeller combinations. Six types of impellers (six-half-elliptical-blade disk turbine (HEDT)

four-wide-blade hydrofoil impeller (WH) pumping down (D) and pumping up (U)

parabolic-blade disk turbine (PDT)

and CBY narrow blade (N) and wide blade (W)) were used to form five combinations identified by PDT+2CBY

PDT+2CBY

PDT+2WH

HEDT+2WH

and HEDT+2WH

respectively. The results show that the relative power demand of HEDT+2WH

is higher than that of other four impeller combinations under all operating conditions. At low superficial gas velocity (u

)

α differences among impeller combinations are not obvious. However

when u

is high

PDT+2WH

shows the best mass transfer performance and HEDT+2WH

shows theworstmass transfer performance under all operating conditions. At high u

and a given power input

the impeller combinations with high agitation speed and big projection cross-sectional area lead to relatively hig

h values of kLa. Based on the experimental data

the regressed correlations of gassed power number with Froude number and gas flow number

and k

α with power consumption and superficial gas velocity are obtained for five different impeller combinations

which could be used as guidance for industrial design.

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