Corrosion condition of the inner wall surface of atmospheric and reduced-pressure steam stripping towers in petrochemical industries
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The image below shows the corrosion on the inner wall of the atmospheric stripping tower in petrochemical processes. The structural type is vertical, with specifications of ф1600×10/12×27102. The material is 16MnR, and the operating medium is normal grade 1, 2, and 3. Temperature 320 degrees, pressure 0.3 MPa. This tank has been in use for over 2 years, and there is significant localized corrosion on the metal surface. Judging from its corrosion condition, the top of the tower is more severely corroded than the bottom.
In the petrochemical industry, the inner walls of stripping towers suffer from corrosion due to prolonged exposure to high temperatures and corrosive operating media. Based on what you have described, the more severe corrosion at the top of the tower compared to the bottom may be due to higher temperatures at the top or greater exposure to corrosive gas components. Although the 16MnR material possesses a certain degree of corrosion resistance, its corrosion resistance may be affected under extreme operating conditions, such as high temperatures and exposure to specific chemical environments. It is recommended to conduct regular inspections of the tower, and to consider measures such as improving the materials or adding protective lining layers in order to extend the equipment’s service life and enhance its safety. .