文献类型：期刊文献

英文题名：Effect of Shear Stress on Deoiling of Oil-Contaminated Catalysts in a Hydrocyclone

作者：Xu, Yin-xiang[1];Liu, Yi[1];Zhang, Yan-hong[1];Yang, Xue-jing[1];Wang, Hua-lin[2]

机构：[1]E China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[2]E China Univ Sci & Technol, State Environm Protect Key Lab Environm Risk Asse, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2016

卷号：39

期号：3

起止页码：567

外文期刊名：CHEMICAL ENGINEERING & TECHNOLOGY

收录：;EI(收录号：20160902008051);WOS:【SCI-EXPANDED(收录号:WOS:000372960900024)】；

基金：The authors would like to express their thanks for the sponsorship of the National Science Foundation for Distinguished Young Scholars of China (Grant No. 51125032).

语种：英文

外文关键词：Catalyst; Deoiling; Hydrocyclone; Numerical simulation; Shear stress

摘要：Shear stress provided by a hydrocyclone was employed to remove the oil from oil-contaminated catalysts. Understanding the deoiling mechanism and quantitative analysis of the interaction between shear stress fields and deoiling are necessary to improve deoiling efficiency. A numerical simulation was conducted for the velocity field and shear stress field of a hydrocyclone. The shear stress field in the wall layer, where oil-contaminated catalysts are usually located, was robust. Increasing inlet flow rates resulted in a higher shear rate distribution along the wall layer. Numerical results were compared with experimental data. In the deoiling process, higher shear stress rates promoted faster transport of oil from catalysts into the fluid, thereby increasing the deoiling efficiency. Deoiling by the shear stress of a hydrocyclone is an efficient method for cleaning oil-contaminated catalysts within a short time.