Influence of slit structure in hydrocyclone conical section on solid-liquid separation performance

被引：0
|
作者：
Duan J. [1 ]
Huang S. [1 ,2 ]
Gao C. [1 ,2 ]
Chen A. [2 ]
Huang Q. [2 ,3 ]
机构：
[1] School of Chemical Engineering and Technology, Qingdao University of Science and Technology, Qingdao, 266042, Shandong
[2] Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, Shandong
[3] Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing
来源：
Huagong Xuebao/CIESC Journal | 2019年 / 70卷 / 05期
关键词：
Experimental validation; Flow; Hydrocyclone; Pressure drop; Separation; Separation efficiency; Slit structure;
D O I：
10.11949/j.issn.0438-1157.20181389
中图分类号：
学科分类号：
摘要：
A new type of hydrocyclone with a tangentially slitted structure is designed. The experimental study on the effect of the length, position, number and style of the slit on the separation performance of the hydrocyclone is carried out. It is shown that compared with the traditional hydrocyclone, the pressure drop of the slit-cone hydrocyclone is significantly reduced. The separation efficiency of the hydrocyclone tends to increase at first and then decrease when the length of the slit increases from 10 mm to 50 mm, and an optimal slit length of 20 mm is observed. In the process of moving the 20 mm slit upward from the first 6 mm slit at the bottom of the cone, the influence of the second slit position on the separation efficiency of the hydrocyclone is similar to that of the slit length. That is to say, it tends to increase at first and then decrease, and there is an optimal distance of 80 mm between the first slit and the second one. When keeps the cross-section area of the slits equaling to that of underflow in the traditional hydrocyclone under the conditions of optimized slit length and position, it is found that the separation efficiency of one slit in the cone is better than that of two, and the style of two-slits located at opposite direction is the best among all the cases investigated. Compared with the classical hydrocyclone, the separation efficiency in the optimal slit-cone hydrocyclone can decrease only 1.48% while the absolute pressure drop can reduce as high as 36.84% at a high flow rate. Therefore, it is a promising hydrocyclone for industrial applications to save energy consumption. © All Right Reserved.
引用
收藏
页码：1823 / 1831
页数：8
相关论文
共 44 条
  • [21] Wang L.Y., Zheng Z.C., Wu Y.X., Et al., Numerical and experimental study on liquid-solid flow in a hydrocyclone, Journal of Hydrodynamics, 21, 3, pp. 408-414, (2009)
  • [22] Olson T., van Ommen R., Optimizing hydrocyclone design using advanced CFD model, Minerals Engineering, 17, 5, pp. 713-720, (2004)
  • [23] Santos S., Jones K., Abdul R., Et al., Treatment of wet process hardboard plant VOC emissions by a pilot scale biological system, Biochemical Engineering Journal, 37, 3, pp. 261-270, (2007)
  • [24] Guo X., Yao L.S., Huang Q.S., Aeration and mass transfer optimization in a rectangular airlift loop photobioreactor for the production of microalgae, Bioresource Technology, 190, pp. 189-195, (2015)
  • [25] Huang Q.S., Jiang F.H., Wang L.Z., Et al., Design of photobioreactors for mass cultivation of photosynthetic organisms, Engineering, 3, 3, pp. 318-329, (2017)
  • [26] Neesse T., Dueck J., Schwemmer H., Et al., Using a high pressure hydrocyclone for solids classification in the submicron range, Minerals Engineering, 71, pp. 85-88, (2015)
  • [27] Fan P.P., Peng H.T., Fan M.Q., Using a permanent magnetic field to manipulate the separation effect of a dense medium cyclone, Separation Science and Technology, 51, 11, pp. 1913-1923, (2016)
  • [28] Yang T., Geng S.J., Yang C., Et al., Hydrodynamics and mass transfer in an internal airlift slurry reactor for process intensification, Chemical Engineering Science, 184, pp. 126-133, (2018)
  • [29] Hwang K.J., Hwang Y.W., Yoshida H., Design of novel hydrocyclone for improving fine particle separation using computational fluid dynamics, Chemical Engineering Science, 85, pp. 62-68, (2013)
  • [30] Mokni I., Dhaouadi H., Bournot P., Et al., Numerical investigation of the effect of the cylindrical height on separation performances of uniflow hydrocyclone, Chemical Engineering Science, 122, pp. 500-513, (2015)
12345