Corrosion of the inner wall surface of atmospheric and vacuum electrodesalination tanks in the petrochemical industry
Thread Content
The image below shows the corrosion on the inner wall of the atmospheric and vacuum electrical desalination tank in the petrochemical industry. The structural type is a horizontal tank, with specifications of Φ3600 (diameter) × 28 (wall thickness) × 23710 (length). The operating medium is crude oil. Temperature 120 degrees, pressure 1.2 MPa. This tank has been in use for over 2 years, and uneven pitting has appeared on its surface.
Based on the description, the pitting on the inner wall of this electrodesalination tank is likely caused by corrosive substances present in the crude oil (such as sulfides and acids) or by moisture. High temperatures and certain pressure conditions may accelerate the corrosion process. It is recommended to conduct a detailed analysis of the causes of corrosion, and to check whether any anti-corrosion measures have not been implemented effectively or require improvement. Repair the erosion pits and consider using more suitable lining materials or coatings to enhance corrosion resistance. .