Screening Mechanism of the Solid-liquid Mixture Vibration Screen

doi:10.11885/j.issn.1674-5086.2021.08.18.01

Abstract

Abstract: Vibration screening technology is a means for the separation of solid-liquid mixture, which is widely used in solid phase control of drilling fluid, river mud treatment and dehydration of coal mine. However, the existing research lacks sufficient comprehension for the vibration screening mechanism of solid-liquid mixture, which limits the improvement of screening efficiency of vibration equipment. In order to solve this problem, the CFD-DEM (Computational Fluid Dynamics-Discrete Element Method) coupling method is used to study the screening mechanism of solid-liquid mixture vibration screen. Firstly, Hertz-Mindlin with JKR Cohesion model is used to simulate the collision characteristics between wet particles. Secondly, porous media is used to describe the hole characteristics of screen. Then the linear vibration trajectory of the screen is simulated by using dynamic mesh. Finally, dynamic characteristics of granular materials and flow characteristics of liquid are analyzed, and the effect of vibration frequency and amplitude on the screening efficiency of solid-liquid mixture are compared. The results show that screening efficiency of solid-liquid mixture can be improved by increasing the amplitude and frequency appropriately, but when $A$>3.0 mm and $f$>22.3 Hz, the effect of vibration screen on screening efficiency of solid-liquid mixture is weakened; when $A$≤3.0 mm and $f$≤22.3 Hz, the screening efficiency of solid-liquid mixture is more sensitive to the change of amplitude, and that of the vibration frequency next to it. The passing area of solid-liquid mixture is mainly concentrated in the area where the length of the screen $L$<20$\%$.

Key words: omputational fluid dynamics, porous media, screening mechanism, numerical simulation, granular material, vibration screen

CLC Number:

FANG Pan, LU Xiaogang, SHI Shuangquan, PENG Huan, HOU Yongjun. Screening Mechanism of the Solid-liquid Mixture Vibration Screen[J]. Journal of Southwest Petroleum University(Science & Technology Edition), 2024, 46(2): 164-175.

0
/ / Recommend

Add to citation manager EndNote|Ris|BibTeX

URL: http://journal15.magtechjournal.com/Jwk_xnzk/EN/10.11885/j.issn.1674-5086.2021.08.18.01

http://journal15.magtechjournal.com/Jwk_xnzk/EN/Y2024/V46/I2/164

References

[1] GUO Baoliang, DUAN Zhishan, ZHENG Jianxiao, et al. Optimization analysis of material speed of non-harmonic horizontally vibrated conveyer[J]. Journal of Vibration, Measurement & Diagnosis, 2013, 33(S2): 109-113, 223. doi: 10.16450/j.cnki.issn.1004-6801.2013.s2.024 郭宝良, 段志善, 郑建校, 等. 非谐和水平振动输送机物料速度优化分析[J]. 振动、测试与诊断, 2013, 33(S2): 109-113, 223. doi: 10.16450/j.cnki.issn.1004-6801.2013.s2.024
[2] KONG Xiangxi, CHEN Changzheng, WEN Bangchun. Dynamic and stability analysis of the vibratory feeder and parts considering interactions in the hop and the hop-sliding regimes[J]. Nonlinear Dynamics, 2018, 93(4): 2213-2232. doi: 10.1007/s11071-018-4320-0
[3] HOU Yongjun, ZHANG Minghong, ZHOU Fengzhe, et al. Solid caboodle conveyance model of shale shaker with roller screen[J]. China Petroleum Machinery, 2004, 32(9): 19-21. doi: 10.3969/j.issn.1001-4578.2004.09.007 侯勇俊, 张明洪, 周锋者, 等. 筒式筛网振动筛颗粒群运移模型[J]. 石油机械, 2004, 32(9): 19-21. doi: 10.3969/j.issn.1001-4578.2004.09.007
[4] HOU Yongjun. The studies on working theory of a roller screen shale shaker[D]. Chengdu: Southwest Petroleum Institute, 2002. 侯勇俊. 筒式网钻井筛工作理论研究[D]. 成都: 西南石油学院, 2002.
[5] DONG K J, YU A B, BRAKE I. DEM simulation of particle flow on a multi-deck banana screen[J]. Minerals Engineering, 2009, 22(11): 910-920. doi: 10.1016/j.mineng.2009.03.021
[6] PAUL W C, MATTHEW D S, MORRISON R D. Separation performance of double deck banana screens-Part 1: Flow and separation for different accelerations[J]. Minerals Engineering, 2009, 22(14): 1218-1229. doi: 10.1016/j.mineng.2009.07.002
[7] DELANEY G W, PAUL W C, MARKO H, et al. Testing the validity of the spherical DEM model in simulating real granular screening processes[J]. Chemical Engineering Science, 2012, 68(1): 215-226. doi: 10.1016/j.ces.2011.09.029
[8] LIU Yilun, SU Jiahui, ZHAO Xianqiong, et al. The study of vibrating screen efficiency based on discrete element method[J]. Journal of Northeast Normal University (Natural Science Edition), 2018, 50(4): 78-83. doi: 10.16163/j.cnki.22-1123/n.2018.04.015 刘义伦, 苏家辉, 赵先琼, 等. 基于离散元法的振动筛的筛分效率研究[J]. 东北师大学报(自然科学版), 2018, 50(4): 78-83. doi: 10.16163/j.cnki.22-1123/n.2018.04.015
[9] SHEN Guolang, TONG Xin, LI Zhanfu. Study on the number of simulation experiments of vibrating screen based on DEM[J]. Machine Design & Research, 2019, 35(2): 110-112, 116. doi: 10.13952/j.cnki.jofmdr.2019.0155 沈国浪, 童昕, 李占福. 基于离散单元法对振动筛仿真实验次数分析[J]. 机械设计与研究, 2019, 35(2): 110-112, 116. doi: 10.13952/j.cnki.jofmdr.2019.0155
[10] AKBAR J, VAHID S N. Employing DEM to study the impact of different parameters on the screening efficiency and mesh wear[J]. Powder Technology, 2016, 297: 126-143. doi: 10.1016/j.powtec.2016.04.008
[11] SAFRANYIK F, CSIZMADIA B M, HEGEDUS A, et al. Optimal oscillation parameters of vibrating screens[J]. Journal of Mechanical Science and Technology, 2019, 33(5): 2011-2017. doi: 10.1007/s12206-019-0403-1
[12] YANG Lu. Parameter optimization of a solid-liquid separation vibrating screen based on the sieving process[D]. Qingdao: China University of Petroleum (East China), 2015. 杨路. 基于筛分过程的固液分离振动筛参数优化研究[D]. 青岛: 中国石油大学(华东), 2015.
[13] LI Hua, ZHANG Meina, YIN Wenqing, et al. Optimization of airflow field on air-and-screen cleaning device based on CFD[J]. Transactions of the Chinese Society for Agricultural Machinery, 2013, 44(S2): 12-16. doi: 10.6041/j.issn.1000-1298.2013.S2.003 李骅, 张美娜, 尹文庆, 等. 基于CFD的风筛式清选装置气流场优化[J]. 农业机械学报, 2013, 44(S2): 12-16. doi: 10.6041/j.issn.1000-1298.2013.S2.003
[14] RAJA V. Shale shaker model and experimental validation[D]. Ohio: The University of Akron, 2012.
[15] FERNANDEZ J W, CLEARY P W, SINNOTT M D. Using SPH one-way coupled to DEM to model wet industrial banana screens[J]. Minerals Engineering, 2011, 24(8): 741-753. doi: 10.1016/j.mineng.2011.01.004
[16] TSUJI Y, KAWAGUCHI T, TANAKA T. Discrete particle simulation of two-dimensional fluidized bed[J]. Powder Technology, 1993, 77(1): 79-87. doi: 10.1016/0032-5910(93)85010-7
[17] EBRHIMI M, MARTIN C, JIN Y O. Numerical and experimental study of horizontal pneumatic transportation of spherical and low-aspect-ratio cylindrical particles[J]. Powder Technology, 2016, 293: 48-59. doi: 10.1016/j.powtec.2015.12.019
[18] JI Yun, LIU Songyong, LI Jianping. Experimental and numerical studies on dense-phase pneumatic conveying of spraying material in venturi[J]. Powder Technology, 2018, 339: 419-433. doi: 10.1016/j.powtec.2018.08.031
[19] LI Hongchang, LI Yaoming, GAO Fang, et al. CFD-DEM simulation of material motion in air-and-screen cleaning device[J]. Computers and Electronics in Agriculture, 2012, 88: 111-119. doi: 10.1016/j.compag.2012.07.006
[20] HAMID R N, REZA Z, RAHMAT S G, et al. Coupled CFD-DEM modeling formulation implementation and application to multiphase flows[M]. New Jersey: Wiley, 2016.
[21] ANDERSON T B, JACKSON R. Fluid mechanical description of fluidized beds. equations of motion[J]. Industrial and Engineering Chemistry Fundamentals, 1967, 6(4): 527-539. doi: 10.1021/i160024a007
[22] WU Liang, GONG Ming, WANG Jingtao. Development of a DEM-VOF model for the turbulent free-surface flows with particles and its application to stirred mixing system[J]. Industrial & Engineering Chemistry Research, 2018, 57(5): 1714-1725. doi: 10.1021/acs.iecr.7b04833
[23] CUNDALL P A, STRACK O D L. A discrete numerical model for granular assemblies[J]. Géotechnique, 1979, 29(1): 47-65. doi: 10.1680/geot.1979.29.1.47
[24] TSUJI Y, TANAKA T, ISHIDA T. Lagrangian numerical simulation of plug flow of cohesionless particles in a horizontal pipe[J]. Powder Technology, 1992, 71(3): 239-250. doi: 10.1016/0032-5910(92)88030-L
[25] ZHU H P, ZHOU Z Y, YANG R Y. Discrete particle simulation of particulate systems: Theoretical developments[J]. Chemical Engineering Science, 2006, 62(13): 3378-3396. doi: 10.1016/j.ces.2006.12.089
[26] ZHU H P, ZHOU Z Y, YANG R Y, et al. Discrete particle simulation of particulate systems: A review of major applications and findings[J]. Chemical Engineering Science, 2008, 63(23): 5728-5770. doi: 10.1016/j.ces.2008.08.006
[27] DU Yiqiong. Research on DEM simulation of spin vibration screening process[D]. Shenyang: Northeastern University, 2011. doi: 10.7666/d.J0125114 杜逸穹. 旋振筛筛分过程的DEM仿真研究[D]. 沈阳: 东北大学, 2011. doi: 10.7666/d.J0125114
[28] ZHAO Yongzhi, JIANG Maoqiang, ZHENG Jingyang. Discrete element simulation of the segregation in Brazil nut problem[J]. Acta Physica Sinica, 2009, 58(3): 1812- 1818. doi: 10.3321/j.issn:1000-3290.2009.03.068 赵永志, 江茂强, 郑津洋. 巴西果效应分离过程的计算颗粒力学模拟研究[J]. 物理学报, 2009, 58(3): 1812-1818. doi: 10.3321/j.issn:1000-3290.2009.03.068