文献类型：期刊文献

英文题名：Oil droplet movement and micro-flow characteristics during interaction process between gas bubble and oil droplet in flotation

作者：Yan, Shenglin[1];Zhang, Yan[1];Peng, Chong[2];Yang, Xiaoyong[1];Huang, Yuan[3];Bai, Zhishan[1];Xu, Xiao[1]

机构：[1]East China Univ Sci & Technol, Sch Mech & Power Engn, State Environm Protect Key Lab Environm Risk Asse, Shanghai 200237, Peoples R China;[2]Sinopec Dalian Res Inst Petr & Petrochem, Dalian 116041, Peoples R China;[3]Shanghai Univ, Sch Environm & Chem Engn, Inst Environm Pollut & Hlth, Shanghai 200444, Peoples R China

年份：2022

卷号：45

起止页码：229

外文期刊名：CHINESE JOURNAL OF CHEMICAL ENGINEERING

收录：;EI(收录号：20221812057028);WOS:【SCI-EXPANDED(收录号:WOS:000794337300010)】；

基金：This research was supported by the National Natural Science Foundation of China (51578239) and the Education and Scientific Research Projects of Shanghai (17DZ1202802), for which the authors express their appreciation.

语种：英文

外文关键词：Flotation; Oil droplet-gas bubble interaction; Approach process; Hydrodynamics

摘要：Flotation is an efficient pre-treatment technology for oily water. In this work, the interaction process between the moving oil droplet and the gas bubble was studied by high-speed camera and BasssetBoussinesq-Oseen (BBO) theoretical model, and the experimental and simulation results of the oil droplet trajectory were compared. Moreover, the micro-particle image velocimetry system was utilized to observe the flow inside and outside of the moving oil droplet. The results show that the BBO model with the mobile bubble's surface can reflect the velocity change trend of the oil droplet during the interaction process between the moving oil droplet and the gas bubble, but there are some significant differences between the experimental and simulation results. While the oil droplet is moving on the bubble's surface, the velocity of the area near the contact point of oil droplet-gas bubble is less than that of the other areas inside the oil droplet. Meanwhile, the flow of water above the oil drop is more biased towards the gas bubble. (c) 2022 The Chemical Industry and Engineering Society of China, and Chemical Industry Press Co., Ltd.