Corrosion condition of the inner wall surface of the initial distillate product tank in petrochemical constant and reduced pressure units
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The image below shows the corrosion on the inner wall of the tank containing the initial distillate products from petroleum refining processes. The structural type is a horizontal tank, with specifications of φ1800 (diameter) × 10 (wall thickness) × 6604 (length). The material is 16MnR, and the operating media are gasoline, oil-gas, and water. Temperature 40 degrees, pressure 0.14 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.
The corrosion problem can be solved by applying special anti-corrosion coatings to the inner walls of the tank, choosing coatings that are resistant to chemical corrosion and suitable for gasoline and oil-gas environments. Before painting, the inner wall of the tank must be thoroughly cleaned and rusted off to ensure that the coating adheres firmly. .