文献类型：期刊文献

英文题名：Strengthened oil-water separation by swirl vane hydrocyclone based on short-circuit flow regulation

作者：Zhao, Wei[1];Li, Jian-ping[2];Zhang, Tong[3];Wei, Aosong[3];Li, Shi-yun[3];Zhao, Zi-heng[1];Yang, Xue-jing[1];Jiang, Xia[2];Wang, Hua-lin[3]

机构：[1]East China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai 200237, Peoples R China;[2]Sichuan Univ, Coll Carbon Neutral Future Technol, Chengdu 610065, Peoples R China;[3]East China Univ Sci & Technol, Natl Engn Res Ctr Ind Wastewater Detoxicat & Reso, Shanghai 200237, Peoples R China

年份：2024

卷号：65

外文期刊名：JOURNAL OF WATER PROCESS ENGINEERING

收录：;WOS:【SCI-EXPANDED(收录号:WOS:001269636000001)】；

基金：This research was supported by the National Natural Science Foundation of China (Grant No. 52000074) and the Innovation Program of Shanghai Municipal Education Commission (No. 2023ZKZD41) and the Fundamental Research Funds for the Central Universities.

语种：英文

外文关键词：Oil -water separation; Short-circuit flow; Swirl vanes; Response surface methodology; Hydrocyclone

摘要：Hydrocyclones make it possible to separate oil/water efficiently. Short-circuit flow (SCF), which is a local secondary vortex in hydrocyclones, significantly restricts efficient separation. This study proposes a novel swirl vane hydrocyclone to regulate the trajectory of the SCF to reduce the SCF rate. The separation process in the hydrocyclone field is calculated using computational fluid dynamics coupled with the population balance modeling. The strengthened separation mechanism by the swirl vane is revealed, and the response of structural parameters, such as the angle, numbers, and width of the swirl vane, to the SCF rate and separation efficiency is investigated using the response surface optimization method. The results show that the swirl vane structure prevents the direct generation of SCF, strengthens the outward migration of the heavy-phase droplets, and reduces the probability of droplet breakage. The optimal structural parameters of the swirl vane are a swirl vane angle of 31 degrees, vane number of 6 pcs, and vane width of 2 mm, which has the lowest SCF rate of 1.62 %. The separation efficiency increases by 21.53 %, and the SCF rate decreases by 85.33 % compared with a conventional hydrocyclone. This study provides theoretical guidance and data support for SCF regulation and the development of oil-water separation hydrocyclone.