Installations for the oil preparation in refineries


The presence of salt in crude oil negatively affects the equipment and makes the necessary chemical and physical reactions more complicated. The salt that is present in the crude oil is dissolved in water. Electrical dehydrators are used to perform a deep dehydration and desalting simultaneously. Inside the electrical dehydrator, an electrostatic field is produced by the means of alternating current. Oil emulsion flows through the field and the residual water is being separated from it.

The price of an electrical dehydrator depends on the configuration, automation level and operational conditions.

According to the shape of the electrical dehydrator, there can be:

  • Cylindrical electrical dehydrators
  • Spherical electrical dehydrators

According to the placement there can be:

  • Vertical and
  • Horizontal electrical dehydrators