Importance of Electrostatic Dehydration And Desalination In Refinery

In the process of refining crude oil, a technique called electrostatic coalescer applied to separate the oil from undesirable substances. For instance, the presence of mineral salts in crude oil could cause corrosion and equipment damage in the processing unit.

Also known as electrostatic dehydration and desalination, the purification process includes removing salt and reducing water content. In order to perform successful dehydration and desalination, a device called dehydrator is used to remove water and water vapors after the oil is heated in a column. If you are upgrading your refinery unit, get the best electrostatic dehydrator and desalter services. These priceless devices will cut down the risk of catalyst poisoning in the downstream units.

Common types of corrosive components found in crude oil

Not all the components in crude oil mixture are not corrosive; however, impurities that can damage refinery equipment and pipelines come with this natural product. Some of the common corrosive components are:

Carbon Dioxide (CO2)

It causes a severe kind of corrosion that is called "sweet corrosion" that occurs without high levels of hydrogen sulfide or similar corrosive agents.

Sulfur

The presence of sulfur in oil can cause sulfidation corrosion at high temperatures. Plain steels and low alloy steels are likely to get damaged by this reaction.

Organic acids

These acids can cause naphthenic acid corrosion (NAC), a non- aqueous corrosion process in refinery distillation units. Generally, this corrosion happens in furnace tubes, columns, and pipelines.

Methods of crude oil refining

There are several techniques that are applicable to the purification process. A process of refining may differ from another depending on the type of desired product. The most common methods are

 Cracking

The substances in the oil are cracked at higher boiling points. Petroleum fractions such as gasoline and other fuel oils are extracted by altering the molecular structure of hydrocarbons.

 Vacuum distillation

The pressure is reduced to avoid thermal damage when distilling the chemical residue from the top of the tower at higher temperatures. The method is similar to fractional distillation.

If your processing unit high-grade desalting equipment, contact the provider with years of experience and who can offer you the best electrostatic dehydrator and desalter services.

Author’s Bio- The writer is an online blogger and the article is about the desalter services.

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