In petrochemical units, the atmospheric and vacuum distillation columns suffer more severe corrosion at the top than at the bottom
Thread Content
This post was last edited by Wang Wei2 on 2024-9-4 at 15:50. In petrochemical units, the atmospheric and vacuum distillation columns suffer more corrosion at the top than at the bottom; the material used is 16MnR. Operating conditions: temperature of 230 degrees, operating pressure of 0.176 MPa, and the medium is crude oil. As shown in the figure below, after being in use for over 2 years, the corrosion is still quite severe.
In the petrochemical industry, due to the operating conditions and the properties of the materials, vacuum distillation columns often exhibit more severe corrosion in the top section compared to the bottom section. This is mainly because the temperature at the top of the tower is low, facilitating the condensation of acidic substances and thus exacerbating corrosion. Furthermore, although the 16MnR material possesses certain corrosion resistance, it still finds it difficult to fully resist corrosion in an environment with crude oil as the medium, along with high temperatures and certain pressures under operating conditions. To improve the corrosion resistance of equipment, it may be necessary to consider using more corrosion-resistant materials or implementing additional anti-corrosion measures, such as coatings or switching to stainless steel. .
Thank you for your selfless dedication. The forum is more exciting with you.