油液多层过滤去固分离及特性分析
Analysis of Solids Removal and Separation in Multi-Layer Filtration of Oil and Their Characteristics
龚海峰 1唐治知 2彭烨 2梁鑫鑫 2余保 3李书龙4
作者信息
- 1. 重庆工商大学废油资源化技术与装备教育部工程研究中心,重庆 400067
- 2. 重庆工商大学机械工程学院,重庆 400067
- 3. 中国石油大学(华东)重质油国家重点实验室,山东青岛 266580
- 4. 安徽国孚润滑油工业有限公司,安徽安庆 246000
- 折叠
摘要
针对油-固体系中单层滤网无法同时满足过滤精度高与使用寿命长的问题,采用多层过滤器并对其去固分离特性展开分析.通过耦合流场控制方程、颗粒运动方程、颗粒-壁面碰撞模型方程,建立了适用油-固体系的多层过滤数值分析模型,探究了油-固体系中多层过滤器的去固分离特性,分析了入口流速和滤网层数对流场特性及过滤比(β)的影响.结果表明:多层过滤器可有效过滤孔径与粒径比(kd)大于15的固体颗粒;增加滤网层数,d5和d20(β分别为5和20时对应的颗粒粒径)显著降低;增大入口流速,d5和d20变化较小;当β＜5时,颗粒粒径的变化对过滤比的影响较小;当β＞5时,颗粒粒径的小幅增大可能导致过滤比显著提高.
Abstract
The multi-layer filter is used and its solids removal and separation characteristics are analyzed,aiming to solve the problem that the single-layer filter screen in the oil-solid system fails to meet the high filtration accuracy and long service life at the same time.By coupling the flow field governing equation,the particle motion equation,and particle-wall collision model equation,the paper establishes a numerical analysis model of multi-layer filtration in the oil-solid system,which is used to explore the solids removal and separation characteristics of the multi-layer filter in the oil-solid system,and analyze the effects of the inlet flow rate and number of filter layers on the flow field characteristics and the filtration ratio(β).The results show that the multi-layer filter can effectively filter solid particles with kd(ratio of pore size to particle size)greater than 15.If the number of filter layers increases,d5 and d20(the particle size corresponding to β of 5 and 20,respectively)will decrease significantly;if the inlet flow rate increases,d5and d20 change little.When β＜5,the change in particle size has little effect on the filtration ratio;when β＞5,a small increase in particle size may lead to a significant increase in the filtration ratio.
关键词
多层过滤/油-固分离/流场特性/碰撞模型/过滤比/分布云图Key words
multi-layer filtration/oil-solid separation/flow field characteristic/collision model/filtration ratio/distribution cloud map引用本文复制引用
基金项目
国家自然科学基金项目(22008016)
国家自然科学基金项目(22178036)
重庆市科技项目(cstc2019jscxgksbX0032)
重庆市科技项目(cstc2020jcyjmsxmX0157)
重庆市教委科技项目(KJQN202100817)
重庆市教委科技项目(KJZD-K202000803)
重庆市教委科技项目(CXQT21023)
出版年
2024
NETL
NSTL
万方数据