入口形式对旋流器内油滴聚结特性影响研究  

Effects of Inlet Structure on Oil Droplet Coalescence in Hydrocyclone

作　　者：邢雷[1,2] 蒋明虎 张勇[1,2] 刘伟 XING Lei;JIANG Ming-hu;ZHANG Yong;LIU Wei(School of Mechanical Science and Engineering, Northeast Petroleum University, Daqing 163318, China;Heilongjiang Key Laboratory of Petroleum and Petrochemical Multiphase Treatment and PollutionPrevention, Daqing 163318, China)

机构地区：[1]东北石油大学机械科学与工程学院,黑龙江大庆163318 [2]黑龙江省石油石化多相介质处理及污染防治重点实验室,黑龙江大庆163318

出　　处：《高校化学工程学报》2018年第6期1322-1331,共10页Journal of Chemical Engineering of Chinese Universities

基　　金：国家高技术研究发展计划(2012AA061303);国家教育部高等学校博士学科点专项科研基金(20132322110002);东北石油大学研究生创新科研项目(YJSCX2017-019NEPU)

摘　　要：以等截面双切向入口旋流器以及轴向进液螺旋导流入口旋流器为研究对象,采用Euler-Euler双流体模型与群体平衡模型(population balancemodel, PBM)耦合方法,对两种旋流器结构开展数值模拟及分离性能实验,分析两种入口结构对旋流器内油滴聚结特性及分离性能的影响。结果表明:当处理量在2～6 m3?h-1、溢流分流比在10%～30%时,切向入口旋流器分离效率略高于轴向入口旋流器,两种结构最高效率均在99%以上;切向入口旋流器在入口通道内几乎不发生聚结现象,而轴向入口旋流器螺旋入口流道内聚结现象明显且沿流道方向逐渐增强;入口油滴粒径在20～50μm时,切向入口旋流器溢流口油滴粒径分布在91～98μm,底流口油滴粒径分布在87.5～91μm,两出口处油滴粒度分布均大于轴向入口旋流器,对油滴呈现出了较好的聚结效果。A double tangential inlet cyclone with equal cross section and an axial spiral flow inlet cyclone were studied using an Euler-Euler two-fluid and population balance(PBM)coupled method,and numerical simulation and separating performance were evaluated to analyze inlet structure effects on coalescence and separation of oil droplets in hydrocyclone.The results show that separation efficiency of the tangential inlet cyclone is slightly higher than that of the axial inlet cyclone when studied at flow rate of2~6m3?h?1and overflow split ratio of10%~30%.The highest efficiencies of the two hydrocyclone are both over99%.There is almost no coalescence in the inlet region of the tangential inlet cyclone,which is obvious in the axial inlet cyclone with gradual increase along the direction of the flow channel.When the inlet oil droplet diameter is20~50μm,the oil droplet diameter in the tangential inlet cyclone overflow port is in the range of91~98μm,and that in the underflow port is in the range of87.5~91μm,and both are larger than that in the axial inlet cyclone and show better coalescence effects.

关 键 词：水力旋流器 聚结特性 入口形式 油滴粒径 分离性能 

分 类 号：TQ051.8[化学工程]