For water cooler tube bundles as well, the anti-corrosion effects differ between those with and without anti-corrosion treatment
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The images below show the top rear cooler of the distillation column (diameter 1300) in a petrochemical company’s heavy oil catalytic unit, as well as the rear cooler for gasoline products in the stabilizer unit; in both cases, the same circulating water was used for 3 years.
Generally, anti-corrosion treatment on the carbon steel surface on the circulating water side yields good results