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Technical Transformation of The Electric Desalting Unit

He Xiaoli (Yanan Refinery, Luochuan, Shaanxi, 727406, China)  
Lowering salt content in desalted crud oil is an important measure to reduce equipment corrosion and supply high quality feed stock for FCCU. After a series of improved processes and new techniques of alternate and direct electric desalting are applied in the electrical desalting unit of the 180x104 t/a atmospheric distillation equipment, deep desalting are carried out, which ensures efficient, long-term and stable running of the atmospheric distillation equipment and heavy oil catalytic cracking unit.
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