A Study on Suction Effect of Impellers in a Square Pump-Mix Mixer

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

Yang Zou¹  Weiyuan Song¹  Weiyang Fei¹  Yundong Wang¹ 

[1] The State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University

关键词: Pump-Mix Mixer;    Suction Head;    Structure Optimization;    CFD;    Experimental Validation;   

DOI  :  10.1252/jcej.14we029

来源: Maruzen Company Ltd

【 摘 要 】

References(12)Pump-mix mixers, widely used in rare earth extraction, are quite different from stirred tanks in their suction effect. The effects of impeller type, diameter, clearance, blade width, blade number, orifice diameter, orifice height and liquid flow rate at different impeller speeds on the head generated by a rotational impeller have been studied. Results show that Both sides Shrouded Turbine with Radial Trapezoidal Blade (BSTRTB) has the best performance for suction. Clearance and orifice height affect the suction head largely. At a large clearance and orifice height, the phenomenon of double recirculation loop flow pattern is observed with weak suction head and high power consumption. Further discussion of pump-mix action was then carried out on the flow pattern and the results show that a large amount of liquid in the low recirculation loop flows to the impeller and results in high power consumption and low head.

【 授权许可】

Unknown