文献类型：期刊文献

英文题名：Centrifugal classification of pseudo-boehmite by mini-hydrocyclone in continuous-carbonation preparation process

作者：Hu, Ziqiang[1];Wang, Bingjie[1];Bai, Zhishan[1];Lu, Zhaojin[1];Hu, Xiaoxue[1];Zhao, Shenghao[1];Luo, Huiqing[1]

机构：[1]East China Univ Sci & Technol, State Environm Protect Key Lab Environm Risk Asse, Sch Mech & Power Engn, Shanghai 200237, Peoples R China

年份：2020

卷号：154

起止页码：203

外文期刊名：CHEMICAL ENGINEERING RESEARCH & DESIGN

收录：;EI(收录号：20200107962887);WOS:【SCI-EXPANDED(收录号:WOS:000512481100017)】；

基金：This work was supported by National Natural Science Foundation of China (51578239, 21878099, 51608203) and Project funded by China Postdoctoral Science Foundation (2019TQ0094).

语种：英文

外文关键词：Centrifugal classification; Pseudo-boehmite; Monodispersed particle size; Continuous-carbonation process; Mini-hydrocyclone; 3D printing

摘要：Pseudo-boehmite (PB) is often used as a precursor for hydrotreating catalyst support (gamma-Al-2 O-3) in the petroleum refining process. Recently, continuous-carbonation process was proposed to prepare PB in order to meet the increasing demand for macroporous gamma-Al2O3, but the highly dispersed particle size of PB in this process limited its development. To obtain the PB with monodispersed particle size, a 10 mm mini-hydrocyclone was designed by 3D printing technology and used to the classification for PB. Then a high-performance zone for classification with Re of 4000-5000 was obtained. The volume ratio of particles (>10 mu m) was increased from 56.3% to 83.5% at a split ratio of 15%, and the mean particle size was increased from 12.91 mu m to 45.7 mu m, which indicated that the highly dispersed particle size could be efficiently concentrated into monodispersed one by hydrocyclone classification. Under optimal operating conditions (Re of 4360 and R-f of 15%), the hydrocyclone was unprecedentedly applied to the continuous-carbonation preparation process of PB, and the volume ratio of particles (>10 mu m) was significantly increased from 53.1% to 75.6% in the pilot test. This finding contributed to optimize continuous-carbonation process and improve product performance. (C) 2019 Published by Elsevier B.V. on behalf of Institution of Chemical Engineers.