Numerical optimization for blades of Intermig impeller in solid-liquid stirred tank

doi:10.1016/j.cjche.2020.08.044

Chinese Journal of Chemical Engineering ›› 2021, Vol. 29 ›› Issue (1): 57-66.DOI: 10.1016/j.cjche.2020.08.044

• Fluid Dynamics and Transport Phenomena • Previous Articles Next Articles

Numerical optimization for blades of Intermig impeller in solid-liquid stirred tank

Xiaolong Li^1,2, Hongliang Zhao³, Zimu Zhang^1,2, Yan Liu^1,2, Ting'an Zhang^1,2

1 Key Laboratory for Ecological Utilization of Multimetallic Mineral, Ministry of Education, Shenyang 110819, China;
2 School of Metallurgy, Northeastern University, Shenyang 110819, China;
3 School of Metallurgy&Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China

Received:2019-11-18 Revised:2020-08-04 Online:2021-04-02 Published:2021-01-28
Contact: Hongliang Zhao, Yan Liu
Supported by:
This work was supported by the National Natural Science Foundation of China (U1760120, U1508217), National Key R&D Program of China (2017YFC0210403, 2017YFC0210404) and Shenyang Science & Technology Project (17-500-8-01).

Numerical optimization for blades of Intermig impeller in solid-liquid stirred tank

Xiaolong Li^1,2, Hongliang Zhao³, Zimu Zhang^1,2, Yan Liu^1,2, Ting'an Zhang^1,2

1 Key Laboratory for Ecological Utilization of Multimetallic Mineral, Ministry of Education, Shenyang 110819, China;
2 School of Metallurgy, Northeastern University, Shenyang 110819, China;
3 School of Metallurgy&Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China

通讯作者: Hongliang Zhao, Yan Liu
基金资助:
This work was supported by the National Natural Science Foundation of China (U1760120, U1508217), National Key R&D Program of China (2017YFC0210403, 2017YFC0210404) and Shenyang Science & Technology Project (17-500-8-01).

Abstract

Abstract: The multiphase flow in the solid-liquid tank stirred with a new structure of Intermig impeller was analyzed by computational fluid dynamics (CFD). The Eulerian multiphase model and standard k-ε turbulence model were adopted to simulate the fluid flow, turbulent kinetic energy distribution, mixing performance and power consumption in a stirred tank. The simulation results were also verified by the water model experiments, and good agreement was achieved. The solid-liquid mixing performances of Intermig impeller with different blade structures were compared in detail. The results show that the improved Intermig impeller not only enhances the solid mixing and suspension, but also saves more than 20% power compared with the standard one. The inner blades have relatively little influence on power and the best angle of inner blades is 45°, while the outer blades affect greatly the power consumption and the optimized value is 45°.

Key words: Intermig impeller, Solid-liquid mixing, Stirred tank, CFD

摘要： The multiphase flow in the solid-liquid tank stirred with a new structure of Intermig impeller was analyzed by computational fluid dynamics (CFD). The Eulerian multiphase model and standard k-ε turbulence model were adopted to simulate the fluid flow, turbulent kinetic energy distribution, mixing performance and power consumption in a stirred tank. The simulation results were also verified by the water model experiments, and good agreement was achieved. The solid-liquid mixing performances of Intermig impeller with different blade structures were compared in detail. The results show that the improved Intermig impeller not only enhances the solid mixing and suspension, but also saves more than 20% power compared with the standard one. The inner blades have relatively little influence on power and the best angle of inner blades is 45°, while the outer blades affect greatly the power consumption and the optimized value is 45°.

关键词: Intermig impeller, Solid-liquid mixing, Stirred tank, CFD

Xiaolong Li, Hongliang Zhao, Zimu Zhang, Yan Liu, Ting'an Zhang. Numerical optimization for blades of Intermig impeller in solid-liquid stirred tank[J]. Chinese Journal of Chemical Engineering, 2021, 29(1): 57-66.

Xiaolong Li, Hongliang Zhao, Zimu Zhang, Yan Liu, Ting'an Zhang. Numerical optimization for blades of Intermig impeller in solid-liquid stirred tank[J]. 中国化学工程学报, 2021, 29(1): 57-66.

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Numerical optimization for blades of Intermig impeller in solid-liquid stirred tank

Numerical optimization for blades of Intermig impeller in solid-liquid stirred tank

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