Common Corrosion Types and Causes of Petrochemical Equipment

In the production process of petrochemical enterprises, equipment directly affects the quality and efficiency of the entire production, and plays an important role in the economic benefits of the enterprise. In equipment management, the most important thing is the anti-corrosion management of equipment. Strengthening anti-corrosion management of equipment can effectively optimize the operation status of equipment and prolong the service life. In this regard, this paper analyzes the importance of petrochemical equipment anti-corrosion and the common types and causes of petrochemical equipment corrosion. Provide some help.

With the continuous development of the national economy and the steady rise of the industrial economy, my country’s petrochemical industry has also ushered in rapid development. However, in the petrochemical industry, a problem that affects the entire production gradually appears, that is, the corrosion problem of petrochemical equipment. Equipment corrosion is common in petrochemical enterprises. After being corroded, various functions of the equipment will be affected. As the degree of corrosion deepens, the impact on the entire production will become more and more obvious. If the corrosion problem is not dealt with in time, once it deepens, it will seriously affect the operation status of the equipment, affect the normal production process, and in severe cases, it is easy to cause safety accidents. Therefore, it is necessary to strengthen the anti-corrosion work of petrochemical equipment.

During the production process, petrochemical equipment reacts with the chemical raw materials in the equipment to produce corresponding oxides, which in turn causes the equipment to be corroded. It is chemical corrosion, which is the most common form of corrosion in petrochemical equipment. When the environment around petrochemical equipment is not properly managed, resulting in excessive humidity, the equipment is prone to electrochemical corrosion. In addition, there are various corrosion phenomena such as delamination corrosion and high oxidation corrosion. The causes of different corrosion situations are different, and the degree of damage to equipment is also different.

In fact, there are many reasons for the corrosion of petrochemical equipment. In order to study the anti-corrosion method of equipment more targetedly, we mainly analyze the reasons of the equipment itself and the reasons in the production process. First, analyze the corrosion phenomenon caused by the petrochemical equipment itself. In petrochemical enterprises, a large number of petrochemical equipment are involved. Most of these equipment are made of metal, so it is easy to react with materials in the daily production process, resulting in corrosion. In order to save cost investment, some enterprises will choose equipment with lower cost of metal materials in the process of selecting and purchasing petrochemical equipment. Although this type of equipment will save costs to a certain extent, such low-quality equipment The corrosion resistance itself is relatively poor, and it is easy to react with the material in the subsequent production process, which greatly increases the risk of equipment corrosion. In this case, although the cost of equipment purchase is saved, once the equipment is corroded, the enterprise needs to invest a lot of money to repair and maintain it repeatedly, which will reduce the economic efficiency. In addition, after corrosion of such low-quality petrochemical equipment, once the material leaks, it may cause safety accidents, bring greater economic losses to the enterprise, and even cause irreparable damage.

Secondly, compared with other production forms, the petrochemical production process itself is relatively special and has certain safety issues. In the production process, a large number of chemical materials, chemical reagents, etc. are involved, and a large number of chemical reactions are involved. These chemical materials are also easy to chemically react with the equipment itself in petrochemical equipment, so that the properties of the equipment materials will occur during the reaction. Changes, the problem of corrosion occurs, which leads to the reduction of its operating efficiency, and it is difficult to ensure the stability and safety of operation. In addition to chemical reactions, in the production process, petrochemical equipment may also be affected by electrochemical reactions and cause corrosion, which affects the normal use of equipment. In fact, in the production process, gas corrosion and liquid corrosion are easy to occur in petrochemical equipment, and the degree of corrosion varies. It is for this reason that even though some companies have taken anti-corrosion measures, it is still difficult to completely solve the problem.

To sum up, in order to ensure the normal progress of petrochemical production, it is of great significance to strengthen the management of petrochemical equipment and improve the efficiency of anti-corrosion treatment. At present, in petrochemical enterprises, the problem of equipment corrosion caused by various reasons is still relatively common. Relevant enterprises should strengthen the anti-corrosion work of equipment based on their own actual conditions, from selecting suitable petrochemical equipment and strengthening equipment structure. Improve the anti-corrosion effect of equipment in many aspects such as designing safety, standardizing the operation behavior of petrochemical equipment, plating coatings and coatings, adding corrosion inhibitors to equipment, so that equipment can carry out production work smoothly, and promote the stable development of enterprises.