石油炼制与化工

• 基础研究 • 上一篇    下一篇

W/O型乳化液在环形流道中的静电聚结机理与特性研究

陈家庆1,丁艺2,张宝生2   

  1. 1. 北京石油化工学院环境工程系
    2. 北京石油化工学院机械工程学院
  • 收稿日期:2010-07-19 修回日期:2010-12-13 出版日期:2011-04-12 发布日期:2011-04-12
  • 通讯作者: 丁艺

RESEARCH ONTO THE MECHANISM AND CHARACTERISTIC OF ELECTROSTATIC COALESCING FOR WATER-IN-OIL EMULSIONS IN ANNULAR FLOW CHANNEL

zhangbaosheng zhang   

  • Received:2010-07-19 Revised:2010-12-13 Online:2011-04-12 Published:2011-04-12

摘要: 基于自行设计的立式环形流道连续流动静电聚结试验装置和高压/高频交流电源,较为系统地研究了电压、频率、脉宽比、电场停留时间等参数对W/O型乳化液中分散相水颗粒静电聚结特性的影响。结果表明,电场停留时间和电压是影响水颗粒聚结效果的主要因素;频率、脉宽比对水颗粒聚结效果影响较小,但对电能消耗产生重要影响。因此必须结合特定的乳化液,综合考虑聚结效果、处理效率和能量消耗,选择合理的操作条件。

关键词: W/O型乳化液, 静电破乳, 电场参数, 立式环形流道, 流动条件

Abstract: Based on the self-designed continuous-flow electro-coalescence experimental apparatus with vertical annular flow channel and high-voltage/high frequency AC power supply, the effects of electric field parameters including voltage, frequency, pulse width ratio and residence time in electric field, on the electrostatic coalescing characteristics of dispersed water droplets in water-in-oil emulsions were studied systematically. The experimental results showed that residence time and voltage were the major factors affecting the coalescing process of water droplets. Frequency and pulse width ratio play an important role for power consumption rather than coalescing process. Therefore, optimum operation conditions for a certain emulsion should be selected by considering the coalescing process, treating efficiency and power consumption comprehensively.

Key words: water-in-oil emulsion, electrostatic demulsification, electric field parameter, vertical annular flow channel, flow condition