老化油乳化液在高频/高压脉冲交流电场下的破乳脱水实验研究

石油炼制与化工 ›› 2018, Vol. 49 ›› Issue (11): 45-49.

老化油乳化液在高频/高压脉冲交流电场下的破乳脱水实验研究

李玮健^1,2,陈家庆^1,2,张明³,尚超³,孟浩^1,2,王春升³

1. 北京石油化工学院机械工程学院
2.深水油气管线关键技术与装备北京市重点实验室
3. 中海石油（中国）有限公司北京研究中心

收稿日期:2018-03-05 修回日期:2018-06-12 出版日期:2018-11-12 发布日期:2018-11-29
通讯作者: 陈家庆 E-mail:Jiaqing@bipt.edu.cn
基金资助:
中海石油(中国)有限公司北京研究中心科研项目;“十三五”国家科技重大专项子课题“高效原油脱水处理技术研究”

DEMULSIFICATION AND DEHYDRATION OF AGING OIL EMULSION UNDER HIGH FREQUENCY AND HIGH VOLTAGE PULSED ELECTRIC FIELD

Received:2018-03-05 Revised:2018-06-12 Online:2018-11-12 Published:2018-11-29
Supported by:

摘要/Abstract

摘要： 基于中海油深圳分公司流花11-1油田老化油配制的W/O型乳化液，采用静态静电聚结破乳实验，并辅助以离心机强化脱水，针对高频/高压脉冲AC电场下电场强度、频率、电压波形、含水率等因素对老化油乳化液电场破乳脱水效果的影响进行研究。结果表明：老化油乳化液的反相点位于40%~50%之间，W/O型老化油乳化液破乳脱水的最优电场参数为电压6 kV、频率2 kHz、波形为矩形波；以含水率40%较稳定老化油乳化液为例，其脱水率可达74.074%；改变乳化液含水率，最优电场破乳参数不变。上述研究结果为流花油田老化油处理流程的改造提供设计参考，并可为生产运行参数的改进提供依据。

关键词: 老化油, 高频/高压脉冲交流电场, W/O型乳化液, 电场破乳, 离心脱水

Abstract: In this paper, based on the prepared aging oil W/O emulsion from Liuhua 11-1 oilfield, the influence of electric field intensity, frequency, waveform and moisture content on electric demulsification and dehydration under high frequency and high voltage electric field was investigated. A static electrostatic coalescing device with a centrifuge assisted to enhance the dehydration rate. The experiment results indicated that the phase inversion point of aging oil emulsion is between 40% and 50%, the optimal electric field parameter for W/O emulsion demulsification and dehydration is field strength (voltage) of 6 kV, frequency 2 kHz and AC square wave. The dehydration efficiency of stable W/O emulsion is 74.074% when the moisture content reaches 40%. These optimal electric field parameters do not vary with moisture content. This study can provide design references for the modification of aging oil treatment process in Liuhua oil field and a foundation for the improvement of production.

Key words: aging oil, high voltage and high frequency pulsed AC electric field, W/O emulsions, electric demulsification, centrifugal dehydration

中图分类号:

李玮健陈家庆张明尚超孟浩王春升. 老化油乳化液在高频/高压脉冲交流电场下的破乳脱水实验研究[J]. 石油炼制与化工, 2018, 49(11): 45-49.

参考文献

[1] 罗玉贵，朱沫，欧宇钧，等. 海上油田老化油处理工艺探讨与初试[J]. 广东化工，2017，44(10)：40-42.
[2] Eow J S, Ghadiri M, Sharif A O, et al. Electrostatic enhancement of coalescence of water droplets in oil: a review of the current understanding[J]. Chemical Engineering Journal, 2002, 85(2):357-368.
[3] 肖蕴，赵军凯，许涛，等. 原油电脱水器技术进展[J]. 石油化工设备，2009，38(6)：49-53.
[4] Bailes P J, Larkai S K L. An experimental investigation into the use of high voltage D.C. fields for liquid phase separation[J]. Transactions of the Institution of Chemical Engineers, 1981, 59(4):229-237.
[5] Lee C M, Sams G W, Wagner J P. Power consumption measurements for ac and pulsed dc for electrostatic coalescence of water-in-oil emulsions[J]. Journal of Electrostatics, 2001, 53(1):1-24.
[6] Taylor S E. Theory and practice of electrically-enhanced phase separation of water-in-oil emulsions[J]. Chemical Engineering Research & Design, 1996, 74(5):526-540.
[7] Friedemann J D, Nilsen P J, Piasecki W. Electrostatic Attraction of Particles: The Implications of Field Theory on Coalescer Design[J]. Petroleum Science & Technology, 2004, 22(7-8):1087-1096.
[8] Berg G, Lundgaard L E, Abi-Chebel N. Electrically stressed water drops in oil[J]. Chemical Engineering and Processing: Process Intensification, 2010, 49(12):1229-1240.
[9] Williams T J, Bailey A G. Changes in the size distribution of a water-in-oil emulsion due to electric field induced coalescence[J]. IEEE Transactions on Industry Applications, 1986, 11(3):536-541.
[10] 金有海，胡佳宁，孙治谦，等. 高压高频脉冲电脱水性能影响因素的实验研究[J]. 高校化学工程学报，2010，24(6)：917-922.
[11] 孙治谦，许兴华，金有海，等. 高压高频脉冲电脱水机理探析[J]. 化工机械，2014，41(4)：457-461.
[12] Lesaint C, Glomm W R, Lundgaard L E, et al. Dehydration efficiency of AC electrical fields on water-in-model-oil emulsions[J]. Colloids & Surfaces A Physicochemical & Engineering Aspects, 2009, 352(1–3):63-69.
[13] Rodionova G, Kele?o?lu S, Sj?blom J. AC field induced destabilization of water-in-oil emulsions based on North Sea acidic crude oil[J]. Colloids & Surfaces A Physicochemical & Engineering Aspects, 2014, 448(1):60-66.
[14] 王建军，王兆坤. 变频脉冲电脱电源应用于老化原油脱水实验[J]. 机电产品开发与创新，2012，25(4)：54-55.
[15] 牛俊邦，王建军，曾雄飞，等. 一种新型的实验室用老化油电脱水装置[J]. 机电产品开发与创新，2013，26(6)：55-57.
[16] 李锐锋，陈家庆，李风春，等. 中原油田老化油回掺电破乳脱水[J]. 过程工程学报，2012，12(4)：60-65.
[17] 潘泽昊，陈家庆，张龙，等. 流花油田老化油高频/高压脉冲交流电场破乳脱水研究[J]. 过程工程学报，2015，15(6)：969-975.
[18] 邹万勤，李福川，谢祥恩，等. 海上油田原油变频变压脉冲脱水电源研制[J]. 机电产品开发与创新，2017，30(3)：33-35.
[19] 秦一鸣，王丽莲. 胶质沥青质相互作用浅析[J]. 石油沥青，2014，28(3)：68-71.
[20] 曾浩见，铁磊磊，李翔. 曹妃甸老化油处理技术研究[J]. 精细石油化工进展，2017，18(4)：5-8.
[21] 郭军. 钙在原油中的存在状态和新型脱钙剂研究[D]. 中国石油大学(华东)，2009.