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Chemcial Industry and Engineering 2020, Vol. 37 Issue (2) :43-53    DOI: 10.13353/j.issn.1004.9533.20191922
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Experimental and CFD Study on Solids Suspension in a Solid-Liquid Stirred Tank With Different Impellers
Wang Huina1,2, Du Xiuxin1,2, Duan Xiaoxia1,2, Yang Chao1,2
1. CAS Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China;
2. School of Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, China

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Abstract The power consumption, pumping capacity and solids suspension characteristics with the novel Half-Folded turbine (HFT) were studied compared to the radial Rushton disk turbine (RDT) and 45° pitched blade turbine pumping down (PBTD) in a solid-liquid stirred tank. In the experiment, the water and glass spheres were selected as the liquid and solid phases, respectively. Meanwhile, the axial velocity distribution of the particles with different impeller types were predicted by computational fluid dynamics (CFD). It is found that the power consumption of RDT is the largest among three impellers. And for HFT, it is close to the power consumption of PBTD at the same rotational speeds. What’s more, compared to RDT and PBTD, HFT has the highest flow number and the strongest pumping capacity. In the solid-liquid system, the flow pattern of HFT is similar to that of PBTD. However, HFT shows the best performance of solids suspension among them.
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Articles by authors
Wang Huina
Du Xiuxin
Duan Xiaoxia
Yang Chao
Keywordssolid-liquid stirred tank;   power consumption;   solids suspension;   Half-Folded turbine;   computational fluid dynamics     
Received 2019-10-24;
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Wang Huina, Du Xiuxin, Duan Xiaoxia, Yang Chao.Experimental and CFD Study on Solids Suspension in a Solid-Liquid Stirred Tank With Different Impellers[J]  Chemcial Industry and Engineering, 2020,V37(2): 43-53
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