交流方波绝缘电极动态电场乳化液静电聚结特性  

Electrostatic Coalescence Characteristics of Dynamic Electric Field Emulsion of AC Square Wave Insulated Electrodes

作　　者：张瑞强 刘新福 郝忠献[2] 刘春花[3] 王筱磊 ZHANG Rui-qiang;LIU Xin-fu;HAO Zhong-xian;LIU Chun-hua;WANG Xiao-lei(School of Mechanical and Automotive Engineering,Qingdao University of Technology,Qingdao Shandong 266520,China;Research Institute of Exploration&Development,PetroChina,Beijing 100083,China;College of Mechanical and Electronic Engineering,China University of Petroleum(East China),Qingdao Shandong 266580,China)

机构地区：[1]青岛理工大学机械与汽车工程学院,山东青岛266520 [2]中国石油勘探开发研究院,北京100083 [3]中国石油大学(华东)机电工程学院,山东青岛2665802

出　　处：《当代化工》2022年第9期2017-2022,共6页Contemporary Chemical Industry

基　　金：国家自然科学基金(项目编号:52074161);国家科技重大专项项目(项目编号:2016ZX05065);山东省重点研发计划(项目编号:2019GHY112029、2019GSF109090)。

摘　　要：为解决目前高含水油田开发过程中油水分离效率较低的现状,搭建非均匀电场动态破乳聚结特性试验平台,开发动态静电聚结特性分离效率的在线测试评价系统,系统分析绝缘电极动态电场形式对W/O型乳状液静电聚结破乳的影响规律,构建绝缘电极动态静电聚结数学模型,依据数值求解和试验分析相结合的手段,提出高含水实验用乳化液制备方法和动态静电聚结试验及其测试分析方法,优选油包水乳状液动态电场形式,优化绝缘复合电极绝缘层厚度,揭示交流方波静电聚结不同绝缘层厚度的电场强度动态变化规律,发现交流方波绝缘复合电极运行特性。结果表明:交流方波能够有效地提升管式静电聚结段环形流道内分离效率,绝缘复合电极的绝缘层厚度与击穿电压成正比关系,且绝缘层应采取合适的厚度且需做成双层,由此可有效提升静电聚结的分离效率,减小绝缘层材质的介质损耗正切角tanδ,可极大增强W/O型乳化液的静电聚结效果并提高动态电场乳化液分离效率。In order to solve the current situation of low oil-water separation efficiency in the development of high water-cut oilfields,a test platform for dynamic demulsification and coalescence characteristics of non-uniform electric field was built,an online test and evaluation system for dynamic electrostatic coalescence characteristics and separation efficiency was developed,and the dynamic electric field of insulated electrodes was systematically analyzed,as well as the influence law of the form on the electrostatic coalescence and demulsification of W/O emulsions,the mathematical model of dynamic electrostatic coalescence of insulated electrodes was constructed,and the method of preparing emulsions for high water content experiments and dynamic electrostatic were proposed based on the combination of numerical solution and experimental analysis.The coalescence test and its test analysis method were used to optimize the dynamic electric field form of the water-in-oil emulsion,optimize the thickness of the insulating layer of the insulated composite electrode,reveal the dynamic change of the electric field strength of the different insulating layer thickness of the AC square wave electrostatic coalescence,and find the AC square wave insulation operating characteristics of composite electrodes.The results showed that the AC square wave could effectively increase the separation efficiency in the annular flow channel of the tube-type electrostatic coalescence section.The thickness of the insulating layer of the insulated composite electrode was proportional to the breakdown voltage,and the insulating layer should be of appropriate thickness and should be double-layered,which can effectively improve the separation efficiency of electrostatic coalescence and reduce the dielectric loss tangent angle tanδof the insulating layer material,to greatly enhance the electrostatic coalescence effect of W/O emulsion and improve the separation efficiency of dynamic electric field emulsion.

关 键 词：动态静电聚结 油水分离 交流方波 绝缘电极 W/O乳化液 

分 类 号：TQ968[化学工程]