The Desalter is a crucial part of the CDU that removes impurities from crude oil before it enters the furnace. ✔ Key functions of the Desalter:

The CDU consists of several key sections, each playing a vital role in the crude oil separation process: 1. Preheat Train ✔ Crude oil is preheated using heat ...

✔ Reflux is a liquid stream returned to the column to improve separation.✔ Helps achieve sharper separation between different fractions.✔ Increases efficiency by maintaining ...

✔ Pump-around circuits remove heat from specific sections of the column.✔ Help reduce furnace fuel consumption by using heat recovery.✔ Control temperature

✔ Possible Causes: Blocked overhead condenser → Poor vapor condensation. Overloaded reflux drum → Excess vapor flow.

Problem Causes Solutions High salt content in crude after desalter Low wash water injection, poor mixing Increase wash water, ...

✔ Removes too many light components, leading to flash point issues in kerosene & diesel.✔ Causes overloading of upper column trays, affecting separation efficiency.✔ ...