文献类型：期刊文献

英文题名：A new measurement method for mixing and segregation of binary mixture by combining gas cutting-off method and ECVT

作者：Wu, Shi-Ming[1];Straiton, Benjamin[2];Zong, Yuan[1];Marashdeh, Qussai;Li, Leqi[1];Xu, Zhimei[1];Zhao, Ling[1]

机构：[1]East China Univ Sci & Technol, Sch Chem Engn, Shanghai, Peoples R China;[2]Tech4Imaging LLC, Columbus, OH 43235 USA

年份：2022

卷号：409

外文期刊名：POWDER TECHNOLOGY

收录：;EI(收录号：20223312577579);WOS:【SCI-EXPANDED(收录号:WOS:000864875400005)】；

基金：This work was supported financially by the National Natural Science Foundation of China (Grant No. 21978080) .

语种：英文

外文关键词：Gas cutting -off method; ECVT; Effective permittivity; Mixing and segregation

摘要：Binary mixture fluidization is an important operation type of fluidized bed. The regularity of mixing and segregation of binary mixture is the key to process research and development. In this paper, a new experimental method for the measurement of mixing and segregation of binary mixture is proposed by combining gas cutting -off method and Electrical Capacitance Volume Tomography (ECVT). While inheriting the advantage of high applicability of gas cutting-off method, this method can be of high spatial resolution with the application of ECVT. This combination can not only obtain detailed particle component distribution information, but also reduce the experimental labor intensity. Based on the measuring principle of ECVT and Maxwell Garnett mixing model, the calibration relationship between voxel value and particle mixing ratio was deduced. An experimental binary mixture system was employed to validate the calibration relationship. The result showed that the calculated calibration curve was in good agreement with the experimental calibration curve, which indicates the rationality and feasibility of the method. On this basis, mixing process of the same particle system was quan-titatively characterized and analyzed at a given air flow rate.