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

作　　者：龚海峰[1] 唐治知 彭烨 梁鑫鑫 余保 李书龙 GONG Haifeng;TANG Zhizhi;PENG Ye;LIANG Xinxin;YU Bao;LI Shulong(Engineering Research Center for Waste Oil Recovery Technology and Equipment of Ministry of Education,Chongqing Technology and Business University,Chongqing 400067,China;School of Mechanical Engineering,Chongqing Technology and Business University,Chongqing 400067,China;State Key Laboratory of Heavy Oil Processing,China University of Petroleum,Qingdao 266580,China;Anhui Guofu Lubricating Oil Industry Co.,Ltd.,Anqing 246000,China)

机构地区：[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

出　　处：《石油学报（石油加工）》2024年第2期523-533,共11页Acta Petrolei Sinica(Petroleum Processing Section)

基　　金：国家自然科学基金项目(22008016,22178036);重庆市科技项目(cstc2019jscx-gksbX0032,cstc2020jcyj-msxmX0157);重庆市教委科技项目(KJQN202100817,KJZD-K202000803,CXQT21023)资助。

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(k_(d))大于15的固体颗粒;增加滤网层数,d_(5)和d_(20)(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,d_(5)和d_(20)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。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 k_(d)(ratio of pore size to particle size)greater than 15.If the number of filter layers increases,d_(5) and d_(20)(the particle size corresponding toβof 5 and_(20),respectively)will decrease significantly;if the inlet flow rate increases,d_(5) and d_(20) change little.Whenβ<5,the change in particle size has little effect on the filtration ratio;whenβ>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 

分 类 号：TE96[石油与天然气工程—石油机械设备]