What are the causes of corrosion in petroleum machinery and equipment

Petroleum machinery and equipment are relatively common equipment in the petroleum industry, but they may exhibit corrosion during use. So, what are the reasons for corrosion? Below, the editor will briefly introduce relevant knowledge points to you.

1. Most of the oil in our country contains a large amount of polysulfides. During the oil extraction process, petroleum machinery and equipment are prone to corrosion by the polysulfides in the oil when they come into contact with it. Then, various polysulfides are produced on the surface of petroleum machinery and equipment. During the operation of petroleum machinery and equipment, these polysulfides will bring many unstable factors to the equipment. In addition, if petroleum machinery and equipment are exposed to the air for a long time, the carbon dioxide and moisture in the air will react locally with the corrosion of petroleum machinery and equipment, resulting in an increasingly severe level of corrosion of the entire petroleum machinery and equipment.

2. Sulfides in petroleum cause corrosion of petroleum machinery and equipment: This corrosion phenomenon is mainly formed by impurities in petroleum products, and the main component of these impurities is sulfides. Sulfides can react chemically with water in petroleum, leading to the production of a large amount of hydrogen sulfide in petroleum. Hydrogen sulfide has restorative and acidic properties, which can cause serious corrosion to petroleum machinery and equipment. In addition, there are also a large number of chemical impurities in petroleum, which to a large extent form corrosion on petroleum machinery and equipment.

3. Chlorides in petroleum lead to corrosion of petroleum machinery and equipment: According to investigations, many petroleum products today contain a large amount of saline water. If saline water undergoes chemical hydrolysis, it will be converted into hydrochloric acid. For petroleum machinery and equipment, hydrochloric acid is one of the key factors that cause corrosion, causing serious corrosion and reducing the quality and safety of petroleum machinery and equipment.

4. Naphthenic acid in petroleum leads to corrosion of petroleum machinery and equipment: Naphthenic acid is the main component of organic acids in petroleum today. Naphthenic acid has intense chemical properties and can react with iron in petroleum machinery and equipment, causing serious corrosion of iron in petroleum machinery and equipment, greatly reducing the safety, reliability, and quality of petroleum machinery and equipment, resulting in restrictions on the consumption of petroleum.

The above are the relevant knowledge points of petroleum machinery and equipment. We hope that everyone can take care of and maintain them during the application process, so that they can demonstrate good results in the application process. Thank you for watching.