文献类型：期刊文献

英文题名：Pressure drop and flow distribution in a group of parallel hydrocyclones: Z-Z-type arrangement

作者：Chen, Cong;Wang, Hua-lin[1];Gan, Guo-hui;Wang, Jun-ye;Huang, Cong

机构：[1]E China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China; Univ Nottingham, Sch Built Environm, Beeston, England; Rothamsted Res, Okehampton EX20 2SB, Devon, England

年份：2013

卷号：108

起止页码：15

外文期刊名：SEPARATION AND PURIFICATION TECHNOLOGY

收录：;EI(收录号：20131116114030);WOS:【SCI-EXPANDED(收录号:WOS:000317887200003)】；

基金：We would like to express our thanks for the sponsorship of the National Natural Science Foundation of China (Grant No. 21076073SN:B060305).

语种：英文

外文关键词：Mini-hydrocyclone; Split ratio; Flow distribution; Pressure distribution; Theory of flow distribution manifolds

摘要：The mini-hydrocyclone has received increasing attention due to its clear advantages of high efficiency, separating precision and relatively low cost. However, its handling capacity decreases as the nominal diameter of a hydrocyclone decreases. Therefore, a group of mini-hydrocyclones are often employed to meet industrial handling capacity which imposes the difficulty of prediction, analysis, and design of such a group of the mini-hydrocyclone system. There is no theoretical model to evaluate design and operation of the system. The objective of this paper is to develop a general theoretical model to evaluate the flow distribution and the pressure drop in parallel mini-hydrocyclone groups with Z-Z-type arrangement. Detailed analytical solutions were obtained so that they can be easily used to predict the pressure drop and flow distribution under the different flow conditions and geometrical parameters. Furthermore, an experimental apparatus with 12 HL/S25-type mini-hydrocyclones parallel in the Z-Z-type arrangement was set up to verify the model under different inlet pressures. It was found that the theoretical pressure drop and flow distribution were in good agreement with the experimental data. Meanwhile, with the combination of the different theoretical calculation cases, the percentage of relative error will be controlled within 1%. The present model also studied the influence of the split ratio on pressure drop and flow distribution since there were two exhaust headers. The uniformity of these distributions increased as the split ratio increased. This paper provided an easy-to-use design guidance to investigate the interactions among structures, operating conditions and manufacturing tolerance, in order to improve the performance of a parallel mini-hydrocyclone separator group. (C) 2013 Elsevier B.V. All rights reserved.