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

作     者：Xiaolong Li Hongliang Zhao Zimu Zhang Yan Liu Ting’an Zhang Xiaolong Li;Hongliang Zhao;Zimu Zhang;Yan Liu;Ting'an Zhang

作者机构：Key Laboratory for Ecological Utilization of Multimetallic MineralMinistry of EducationShenyang 110819China School of MetallurgyNortheastern UniversityShenyang 110819China School of Metallurgy&Ecological EngineeringUniversity of Science and Technology BeijingBeijing 100083China 

出 版 物：《Chinese Journal of Chemical Engineering》 (中国化学工程学报（英文版）)

年 卷 期：2021年第34卷第1期

页      面：57-66页

核心收录：

学科分类：0710[理学-生物学] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 080704[工学-流体机械及工程] 08[工学] 0817[工学-化学工程与技术] 0807[工学-动力工程及工程热物理] 0703[理学-化学] 

基　　金：supported by the National Natural Science Foundation of China (U1760120, U1508217) National Key R&D Program of China (2017YFC0210403, 2017YFC0210404) Shenyang Science & Technology Project (17-500-8-01)。 

主　　题：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°.