脱金属剂在原油电脱盐工艺中的应用

介绍了脱金属剂在原油电脱盐工艺中脱金属原理。考察了脱钙剂品种和浓度对原油脱金属率、电脱盐工艺中电压、电流以及对含油污水的影响。结果表明，当A型脱钙剂浓度为80mg／L时，脱钙率由11．9％提高到71．2％；电脱盐工艺中加入脱钙剂，电流下降约50％，电压上升约20％，有利于装置平稳操作，节能效果明显；A型脱钙剂对含油污水处理有明显不利影响，增加环保成本，而FT-2型脱钙剂对含油污水处理影响不大。

Application of Demetalizers in Eletric Desalting of Crude Oil

The demetalizing mechanism of demetalizer in electric desalting of crude oil was presented.The effects of kinds and concentration of decalcifying agent on the demetalizing rate of crude oil,voltage and current used in desalting process,and oily sewerage were examined.The result showed that the decalcifying rate were increased obviously when A type of decalcifying agent was used at the concentration of 80 mg/L. The current was decreased by 50% while voltage increased by about 20% when using decalcifying agent,so the unit could run smoothly and the energy could be saved obviously.A type decalcifying agent had negative effects on treating oily sewerage thus increasing the treatment cost while FT-2 type had less effects on treatment of oily sewerage.