混沌脉冲组电场作用下油中液滴的聚结特性  

Coalescence Characteristics of Droplets in Oil Under the Action ofElectric Field in Chaotic Pulse Group

作　　者：龚海峰[1] 方原 余保 彭烨 胡耀中 廖培尧 殷宏 李书龙 GONG Haifeng;FANG Yuan;YU Bao;PENG Ye;HU Yaozhong;LIAO Peiyao;YIN Hong;LI Shulong(Engineering Research Centre for Waste Oil Recovery Technology and Equipment of Ministry of Education,Chongqing Technology and Business University,Chongqing 400067,China;Chongqing Key Laboratory of Manufacturing Equipment Mechanism Design and Control,Chongqing Technology and Business University,Chongqing 400067,China;School of Environment and Resources,Chongqing Technology and Business University,Chongqing 400067,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]重庆工商大学制造装备机构设计与控制重庆市重点实验室,重庆400067 [3]重庆工商大学环境与资源学院,重庆400067 [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3期744-752,共9页Acta Petrolei Sinica(Petroleum Processing Section)

基　　金：国家自然科学基金项目(22178036,22008016);国家教育委员会科技项目(CSTB2023NSCQ-MSX079);重庆市教育委员会科技攻关项目(KJQN202100817,KJZD-M202200801)资助。

摘　　要：混沌脉冲组(CPG)电场可用于乳化液破乳,但是乳化液滴在油中的聚结特性尚不清楚。通过数值方法研究了油中液滴在混沌脉冲组电场中的聚结特性以及电场参数对液滴聚结过程的影响。结果表明:CPG电场作用下液滴聚结过程可分为6个阶段,各阶段的呈现与电场作用时间和电场休止时间相关,其中第Ⅲ阶段的持续时间对聚结时间影响较大;占空比影响液滴聚结过程的状态以及聚结时间;电场强度的增加对液滴聚结状态无显著影响,但明显缩短聚结时间,当电场强度从500 kV/m增加到700 kV/m,液滴聚结时间从0.400 s减小到0.152 s。研究液滴在CPG电场中的聚结特性能够为CPG电场在工业中的应用提供理论依据。The electric field of chaotic pulse group(CPG)can be used for emulsion demulsification,but the coalescence characteristics of emulsion droplets in oil are still unknown.Therefore,the coalescence characteristics of oil droplets in the electric field of CPG and the influence of electric field parameters on the droplet coalescence were studied numerically.The results show that the droplet coalescence process under the action of CPG electric field can be divided into six stages,and the presentation of each stage is related to the action time and rest time of electric field,among which the duration of StageⅢhas a big influence on the coalescence time.The duty cycle affects the droplet coalescence process and coalescence time,and the increased electric field strength makes no significant effect on the coalescence state of droplets.When the electric field strength increases from 500 kV/m to 700 kV/m,the droplet coalescence time can decrease from 0.400 s to 0.152 s.The results of this study can provide a theoretical basis for the application of CPG electric field in industry.

关 键 词：油包水乳液 混沌脉冲组 聚结特性 液滴 电场参数 数值分析 

分 类 号：TQ021[化学工程]