Factors affecting desalting rate of crude oil and adjustment methods

Factors affecting the desalting rate of crude oil:

1 The pressure drop of the mixing valve is too low, and the oil and water are not in effective contact;

2. Insufficient water injection;

3. Desalting operation temperature is too low;

4. The increase of crude oil salt content or the increase of oil weight increases the difficulty of desalting;

5. Less injection of demulsifier;

6 transformer tripping, electricity is not normal;

7 Too much sediment in the electric desalination tank;

8 The electrical desalination threshold is too high or too low.

Adjustment method:

1 Properly increase the pressure drop of the mixing valve;

2 Increase the primary or secondary water injection;

3 Increase the desalting temperature of crude oil;

4 Contact relevant departments to stabilize the properties of crude oil, appropriately increase the amount of water injected and increase the desalting temperature;

5. Increase the injection amount of demulsifier to make it within the process index;

6 If it is caused by the crude oil tank change, contact the relevant units to stabilize the nature of the crude oil and adjust the transformer to withstand operation;

7 Wash the electric desalting tank regularly;

8 Strengthen the operation to control the boundary within the process index.