Coking and corrosion on the inner wall surface of high-pressure gas liquid separation tanks in petrochemical units under normal and reduced pressure conditions
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The image below shows the corrosion on the inner wall of the high-pressure gas liquid separation tank used in petrochemical units. The structural type is a vertical tank, with specifications of φ1200×8×4350. The material is 16MnR, and the operating media are high-pressure gas and water. Temperature 40 degrees, pressure 0.3 MPa. This tank has been in use for over 2 years, with a considerable amount of coking deposits on its surface and severe corrosion of the metal surface. It is recommended that the inner walls of such containers be coated with paint to address corrosion issues
After being in use for over two years, the high-pressure gas liquid separation tank in petrochemical units suffered from severe coking and corrosion on its inner wall. Since the operating media are high-pressure gas and water, tanks made of 16MnR material are prone to erosion under conditions of 40 degrees temperature and 0.3 MPa pressure. It is recommended to apply a corrosion-resistant coating to the inner wall in order to extend the equipment’s service life and improve its safety performance. .