Study of hydraulic oil filtration process from solid admixtures using rotating perforated cylinder

• Published in: Journal of the Taiwan Institute of Chemical Engineers 2022-12, Vol.141, p.104578, Article 104578
• Main Authors: Brazhenko, Volodymyr, Qiu, Yibo, Mochalin, Ievgen, Zhu, Gangguo, Cai, Jian-Cheng, Wang, Dongyun
• Format: Article
• Language: English
• Subjects: Computational fluid dynamics; Hydraulic oil; Multiphase flow; Rotating perforated cylinder; Solid admixtures
• ISSN: 1876-1070; 1876-1089
• DOI: 10.1016/j.jtice.2022.104578

•Analysis of velocity magnitude distribution of hydraulic oil inside the filter.•Visualization of anthracite particle trajectories for different flow regimes.•Influence of stream structure on particles’ motion.•Determination of cleaning efficiency of hydraulic oil from different kind of particles. Dynamic filtration using a rotating perforated cylinder can provide excellent cleaning efficiency of liquids from solid admixtures that is closely related to the fluid flow characteristics. The experimental tests and numerical simulation were carried out to study the cleaning efficiency of hydraulic oil AMG-10 from anthracite particles and other kinds of solid admixtures using a rotating perforated cylinder. The hydraulic oil flow structure inside the filter was analysed, and hydraulic oil velocity distributions near the rotating cylinder were obtained. Results show that primary and secondary vortex flows influence the filter cleaning efficiency. A vortex flow near-surface of the rotating cylinder has caused a stagnant zone in which particles accumulate. The comparison of the cleaning efficiency results for 2D and 3D modelling using the SST k-ω turbulence model, previous 3D modelling using the RSM turbulence model and experimental data is presented. The expediency of applying the 2D problem statement using the SST k-ω turbulence model for flow regimes characterized by the dimensionless velocity ratio criterion m > 64 is shown. Based on the numerical model, we determined the cleaning efficiency of some metallic and non-metallic impurities, which can be present in the hydraulic system of the mining machine. [Display omitted]