Crude oil electrodesalting technology

The invention belongs to the technical field of petrochemical industry, and concretely relates to a crude oil electrodesalting technology. Preheated crude oil and a crude oil diluent are mixed with primary injected water, and the obtained mixture undergoes ultrasonic demulsification to realize primary electrodesalting; and the primarily electrodesalted crude oil is mixed with secondary injected water to realize secondary electrodesalting. The technology can obviously improve the desalting and dehydrating effects of heavy viscous oil, has the advantages of low cost, small energy consumption, strong adaptability, good comprehensive effect, and easiness in promotion and application, can effectively solve the problem of difficulty in desalination treatment of heavy oil, and meets production requirements of oil refineries. 本发明属于石油化工技术领域，具体涉及种原油电脱盐工艺。将预热的原油、原油稀释剂与级注水进行混合，经过超声波破乳作用后，进行级电脱盐；级电脱盐后的原油与二级注水进行混合，进行二级电脱盐，即得。本发明能够显著的提高重油稠油的脱盐脱水效果，且成本低、能耗小、适应性强、综合效果好、易于推广应用。该方法可以有效的解决重油稠油难于脱盐处理的难题，满足炼油厂生产需求。