Power demand and mixing performance of coaxial mixers in a stirred tank with CMC solution

Yuyun Bao; Yu Lu; Qianqin Liang; Li Li; Zhengming Gao; Xiongbin Huang; Song Qin

doi:10.1016/j.cjche.2015.01.002

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Power demand and mixing performance of coaxial mixers in a stirred tank with CMC solution

流体力学与传递现象 | Updated：2026-01-06

- Power demand and mixing performance of coaxial mixers in a stirred tank with CMC solution
- Chinese Journal of Chemical Engineering Vol. 23, Issue 4, Pages: 623-632(2015)
- Affiliations：
  
  2 Lanzhou Petrochemical, PetroChina,Lanzhou,China,730060
- Author bio：
- Funds：
- DOI：10.1016/j.cjche.2015.01.002
  CLC：
- Published：2015
- Accepted：
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Yuyun Bao, Yu Lu, Qianqin Liang, Li Li, Zhengming Gao, Xiongbin Huang, Song Qin. Power demand and mixing performance of coaxial mixers in a stirred tank with CMC solution[J]. Chin.J.Chem.Eng., 2015, 23(4): 623-632.
DOI：

Yuyun Bao, Yu Lu, Qianqin Liang, Li Li, Zhengming Gao, Xiongbin Huang, Song Qin. Power demand and mixing performance of coaxial mixers in a stirred tank with CMC solution[J]. Chin.J.Chem.Eng., 2015, 23(4): 623-632. DOI： 10.1016/j.cjche.2015.01.002.

摘要

Abstract

Experimental investigationwas carried out in an elliptical based stirred tank with a diameter of 0.48m to explore the power demand and mixing performance of coaxial mixers. Syrup and CMC solution (sodium carboxy methyl cellulose) were used as the Newtonian and non-Newtonian fluids

respectively. Four different coaxial mixers were combined with either CBY or Pfaudler impeller as the inner one

and anchor or helical ribbon (HR) as the outer one. Results show that Pfaudler-HR is the optimized combination among four coaxial mixers in this work

which provides the shortest mixing time given the same power consumption. Compared with the syrup solution

the increase of power input can make the mixing time decreasing more obviously in the CMC solution. The quantitative correlations for both syrup and CMC solutions were established to calculate the power draw and the mixing time of four coaxial mixers.

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