文献类型：会议论文

英文题名：Critical impeller speeds for a gas-inducing stirring tank loaded with solid particles

作者：Zhang, Yanhong[1];Zhang, Zhengwei[1];Wei, Chenwen[1];Wang, Hualin[1]

机构：[1]East China Univ Sci & Technol, Shanghai 200237, Peoples R China

会议论文集：10th International Symposium on Catalysis in Multiphase Reactors (CAMURE) / 9th International Symposium on Multifunctional Reactors (ISMR)

会议日期：JUL 07-10, 2017

会议地点：Qingdao, PEOPLES R CHINA

语种：英文

外文关键词：Critical gas-induction impeller speed; Gas-inducting impeller; Gas-liquid-solid; Multiphase reactor; Solid loading

摘要：The influence of solid particles size, density and loading on the critical gas-inducing impeller speed was investigated in a gas-liquid-solid stirring tank equipped with a hollow Rushton impeller. Three types of solid particles, hollow glass beads with diameters of 300 mu m, 200 mu m, 100 mu m, and 60 mu m, silica gel and desalting resin, were used. It was found that the adding solid particles would change the critical impeller speed. For hollow glass beads and silica gel, whose relative densities were less than or equal to 1.5, the critical impeller speeds increased with the solid loading before reaching the maximum values, and then decreased to a value even lower than that without added solids. The size of the solids also had apparent influence on the critical impeller speed, and larger solid particles correspond to a smaller critical impeller speed. The experimental data also showed that the gas-inducing was beneficial to the suspension of the solid particles. (C) 2018 The Chemical Industry and Engineering Society of China, and Chemical Industry Press. All rights reserved.