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

doi:10.1016/j.cjche.2015.01.002

Chinese Journal of Chemical Engineering ›› 2015, Vol. 23 ›› Issue (4): 623-632.DOI: 10.1016/j.cjche.2015.01.002

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

Yuyun Bao¹, Yu Lu¹, Qianqin Liang¹, Li Li¹, Zhengming Gao¹, Xiongbin Huang¹, Song Qin²

1 State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China;
2 Lanzhou Petrochemical, PetroChina, Lanzhou 730060, China

收稿日期:2014-02-14 修回日期:2014-11-07 出版日期:2015-04-28 发布日期:2015-05-13
通讯作者: Xiongbin Huang

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

Yuyun Bao¹, Yu Lu¹, Qianqin Liang¹, Li Li¹, Zhengming Gao¹, Xiongbin Huang¹, Song Qin²

1 State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China;
2 Lanzhou Petrochemical, PetroChina, Lanzhou 730060, China

Received:2014-02-14 Revised:2014-11-07 Online:2015-04-28 Published:2015-05-13
Contact: Xiongbin Huang

摘要/Abstract

摘要： 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.

关键词: Non-Newtonian, fluids Coaxial mixer, Power demand, Mixing performance

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.

Key words: Non-Newtonian, fluids Coaxial mixer, Power demand, Mixing performance

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]. Chinese Journal of Chemical Engineering, 2015, 23(4): 623-632.

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

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

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