平板绝缘电极静电聚结器脱水研究

Experimental Study on Dehydration of Electrostatic Coalescer with Flat Plate Insulated Electrode

随着原油重质化、劣质化,原油脱水变得更加困难,造成常规电脱水器的极板之间会产生电弧及短路、电脱水电流大,甚至造成变压器跳闸、烧毁现象发生。尝试采用氟塑料设计制造平板绝缘电极静电聚结器,并进行室内实验。通过分析实验结果,总结绝缘材料、电极结构和电场作用时间等因素对聚结效果的影响规律,评价该结构的静电聚结器及制作工艺的优缺点。实验结果表明,对含水特高的原油乳化液,该静电聚结器的脱水效果非常理想。对含水率为70%和80%的原油乳化液,脱水效率可达95%以上。

With crude oil becoming heavier and poorer, it becomes increasingly difficult in the dehydration of crude oil. Current shortcut circuit occurred in the process of electrostatic coalescence dehydration of crude oil. These would cause the increase of dehydration current and trip of transformer, which would affect the stable normal operation of electrostatic coalescer. To solve this problem,some flat plate insulated electrodes were made from fluoroplastics materials for the experiments. According to the experimental results, the impacts of different factors such as the thickness of the insulated material, electrode structure and resident time were studied, and advantages and disadvantages of the electrostatic coalescer were evaluated. The results show that the electrostatic coalescer has a good dehydration efficiency for crude oil emulsion with high water. The dehydration efficiency is over 95% for the crude oil emulsion containing 70% or 80% of water.