Issues regarding corrosion prevention in acidic water tanks
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Previously, the anti-corrosion coating used for acidic water tanks was an epoxy resin and glass flake-based coating; however, the current design for anti-corrosion in newly built acidic water tanks uses an epoxy resin primer + epoxy resin intermediate coat + glass cloth + epoxy resin intermediate coat + glass cloth + epoxy resin intermediate coat + glass cloth + epoxy resin intermediate coat + vinyl acid-resistant topcoat. Experts, do you think this approach will meet the anti-corrosion requirements, and what will be the performance over a long period of use?
Regarding the corrosion of petrochemical acidic water tanks, stress corrosion cracking in the weld seams and heat-affected zones is the main issue, and coatings based on epoxies and vinyls do not yield good results. We have learned from past failures in corrosion prevention in this area; later, we switched to a metal nano-polymer coating for corrosion protection, and the results were very good. It is being used by multiple petrochemical companies.