摘要
采用自行设计的矩形波高频/高压脉冲交流电源和静电聚结器,以取自海洋油田原油配制的含水率分别为5%和20%的2种W/O型原油乳化液为研究对象,对原油乳化液进行了高频/高压静态电脱水实验,与工频/高压交流电源的脱水效果作对比,并测量了乳化液在施加电场前后的电导率。结果表明,相比工频交流电场,高频/高压脉冲交流电场对原油乳化液具有更好的破乳脱水效果;W/O型原油乳化液最佳脱水频率范围在1400～1500Hz;高频/高压脉冲电场对W/O型乳化液的电导率参比值有明显影响,乳化液在电场作用后的电导率明显高于施加电场前的电导率,同时电导率参比值随电场强度和频率的变化也会发生变化,因此也可以作为评价原油乳化液脱水效果的指标。
By using the self made rectangular wave high frequency/high voltage pulse AC power and electrostatic coalescer, the static electric-dehydration experiments of two crude oil emulsions with the water-cut of 5% and 20%, respectively, from offshore crude oil were accomplished. The dehydration effect of crude oil emulsion with the high frequency/high voltage pulse AC electric field was compared to that with power-frequency electric field. Then conductivity of the crude oil emulsion was measured before and after the electric-dehydration experiment. The results showed that the dehydration rate of crude oil emulsion with high frequency/high voltage AC electric field was better than that with the power-frequency electric filed, and the best frequency range for crude oil emulsion was 1400-1500 Hz. The conductivity of crude oil emulsion was greatly influenced by the high frequency/high voltage AC electric field and varied under different electric field intensity and frequency, which can be also used as an index to evaluate the dehydration effect.
出处
《石油学报（石油加工）》
EI
CAS
CSCD
北大核心
2012年第5期844-850,共7页
Acta Petrolei Sinica(Petroleum Processing Section)
基金
国家自然科学基金项目(51079006)
北京高校人才强教计划项目(PHR201107213)资助
关键词
海洋原油
W/O型乳化液
高频/高压交流电场
静电聚结机理
脱水率
电导率
offshore crude oil
water in-oil emulsions
high frequency/high voltage AC electricfield
electrostatic coalescing mechanism
dehydration rate
conductivity
