液-液水力旋流器分离效率深度提升技术探讨  

Discussion on technology of improving separation efficiency of liquid-liquid hydrocyclone

作　　者：宋民航 赵立新[2,3] 徐保蕊 刘琳[2,3] 张爽 SONG Minhang;ZHAO Lixin;XU Baorui;LIU Lin;ZHANG Shuang(Institute of Process Engineering,Chinese Academy of Sciences,Beijing 100190,China;School of Mechanical Science and Engineering,Northeast Petroleum University,Daqing 163318,Heilongjiang,China;Heilongjiang Key Laboratory of Petroleum and Petrochemical Multiphase Treatment and Pollution Prevention,Daqing 163318,Heilongjiang,China)

机构地区：[1]中国科学院过程工程研究所,北京100190 [2]东北石油大学机械科学与工程学院,黑龙江大庆163318 [3]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：《化工进展》2021年第12期6590-6603,共14页Chemical Industry and Engineering Progress

基　　金：国家高技术研究发展计划(2012AA061303);黑龙江省自然科学基金(重点)项目(ZD2020E001);东北石油大学“龙江学者”配套经费支持项目(lj201803)。

摘　　要：为解决微小粒径分散相分离效率不高,制约水力旋流器分离效率深度提升的问题,本文以液-液水力旋流器为分析对象,在总结已有理论及研究成果基础上,分别从影响旋流分离效率的关键物理因素,包括分散相在旋流场内的停留时间、分散相粒径、分散相距轴心旋转半径、分散相切向旋转速度以及旋流分离工艺系统五个方面出发,首先对已有提升旋流分离效率的水力旋流器串联工艺、分散相粒径聚结器、小直径旋流分离器及增强切向速度的动态水力旋流器等技术措施进行分析总结,并在此基础上提出了促进旋流分离效率深度提升的新型技术方案,为液-液两相以及固-液、气-液、气-液-固等多相混合介质的高效旋流分离器设计及系统优化提供一定理论及技术支撑。To solve the problem of low separation efficiency for small particle size,which restricts the deep improvement of the cyclone separation efficiency,the liquid-liquid hydrocyclone was chosen as the analysis object.The key physical factors affecting the separation efficiency were summarized,including the residence time of discrete phase in the swirl field,particle size of discrete phase,rotation radius of discrete phase from the central axis,tangential rotation velocity of discrete phase,and the whole separation process system.Specifically,it was first analyzed and summarized in this work the current technical measures to improve cyclone separation efficiency,such as two-stage series hydrocyclone,dispersed phase coalescer,small-diameter hydrocyclone,and dynamic hydrocyclone that can increase the tangential velocity.Then,several new technical solutions to improve the separation efficiency were proposed from multiple aspects,which provides certain theoretical and technical support for the highefficiency hydrocyclone design and system optimization for liquid-liquid,solid-liquid,gas-liquid,gas-liquidsolid and other multiphase mixtures.

关 键 词：水力旋流器 停留时间 粒径 旋转半径 切向速度 分离效率 

分 类 号：TQ051.8[化学工程]