高校化学工程学报2012，Vol.26Issue(2)：222-227,6.
新型静电聚结器中水滴聚结特性研究
Investigation on Coalescence Characteristics of Water Droplets in New Type Electrostatic Coalescer
摘要
Abstract
Traditional electric dehydrator with bare electrodes is easily broken down by high voltage when the water content is high. The insulated electrode and new type electrostatic coalescer were designed to avoid the breakdown of electric field. The coalescence characteristics of water droplets under high AC electric field were investigated with water in crude oil emulsion as experiment medium. The micro high-speed camera system and image processing technology were also used to analyze the droplet size in the entrance and outlet of electrostatic coalescer. The effects of electric field intensity, flow rate and water content on the coalescence of water droplets were investigated. The results indicate that the insulated high voltage electrode can effectively prevent electric field breakdown. High electric field intensity is beneficial to the coalescence of water droplets, but if the electric field intensity is higher than the critical one, the water droplets will rupture. The optimal electric field intensities vary with water content, and the optimal electric field intensities decrease with the increase of water content The coalescence of water droplets is associated with residence time, and high electric field intensity can dramatically facilitate the coalescence of water droplet under low flow rate. With the increase of flow rate, the effect of electric field intensity is weakened, but high electric field intensity can still effectively promote the coalescence of water droplets.关键词
油包水/电聚结器/液滴/电场强度/含水率Key words
water in oil/ electrostatic coalecer/ droplet/ electric field intensity/ water content分类
能源科技引用本文复制引用
杨东海,何利民,罗小明,张海龙..新型静电聚结器中水滴聚结特性研究[J].高校化学工程学报,2012,26(2):222-227,6.基金项目
国家自然科学基金(51006124,51106182) （51006124,51106182）
中央高校基本科研业务费专项资金资助(09CX04032A) （09CX04032A）
中国石油大学(华东)研究生创新基金资助项目(CX2D11-13). （华东）
