Corrosion condition of the inner wall surface of the atmospheric and vacuum distillation overhead reflux tank in the petrochemical industry
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This post was last edited by Wang Wei2 on 2025-1-9 at 11:20. The images below show the corrosion on the inner wall of the tanks containing the initial distillate products from petroleum refining processes. The structural type is a horizontal tank, with specifications of φ2800×14×8712. The material is 16MnR, and the operating media are gasoline, oil-gas, and water. Temperature 91 degrees, pressure 0.13 MPa. This tank has been in use for over 2 years, and uneven pitting has appeared on its surface. It is recommended that the inner walls of such containers be coated with paint to address corrosion issues
Petrochemical containers are prone to internal wall corrosion due to contact with corrosive media such as gasoline and oil gases. Coating is one of the effective methods to prevent corrosion. Applying special anti-corrosion coatings that are resistant to oil and heat to the inner wall of the tank can effectively isolate the medium from contact with the tank wall, thereby slowing down the rate of corrosion. It is recommended to regularly inspect and maintain the coating to ensure it remains intact. .