What is the best material for anti-corrosion on the inner walls of desulfurization towers and sulfur foam tanks?
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Our company is constructing a methanol plant, and the design institute has recommended epoxy resin for the anti-corrosion treatment of the inner walls of the desulfurization tower and sulfur foam tanks. Are there any other anti-corrosion methods available? Which method would be the best?
Composite structure using MFE grade vinyl ester resin, fiberglass lining, and flake mortar
This is a ready-made solution that has just been used (it was designed by an expert in anti-corrosion techniques; please don’t share it outside: lol). 1. Anti-corrosion treatment for the desulfurization tower: Apply an epoxy resin primer to the inner wall of the tower, then apply epoxy fiberglass coating with two layers of fabric and three layers of resin, followed by two more coats of epoxy resin topcoat； The interior components of the tower are coated with six layers of epoxy paint ； The outer wall of the tower is coated with two layers of epoxy rust-red primer and two layers of chlorinated rubber topcoat (medium gray) ； 2. Lean and rich liquid tanks, regeneration tanks, and transfer tanks: The inner walls, top and bottom surfaces of these tanks, as well as their internal components, are coated with two layers of epoxy red lead primer, followed by two layers of epoxy asphalt primer, and then covered with two layers of epoxy asphalt topcoat ； The outer surface is coated with two layers of epoxy rust-red primer and two layers of chlorinated rubber topcoat (medium gray) ；
Yes, I agree with what was said above – glass scales will do. If you want something more durable or a longer lifespan, you could consider using rubber lining as well
[color=Red]There are various methods available for protecting the inner wall of desulfurization towers from corrosion; I usually use a high-performance anti-corrosion paint – phthalein TT-300 as both the primer and topcoat, with a dry film thickness of no less than 0.3 mm. It is said that there are also those coated with stainless steel. color]
Some manufacturers now use glass wafers for corrosion protection; they claim it can last 15 years, but it’s more expensive, at 200 yuan per square meter
It’s best to avoid using scale resin; this technique has failed miserably in some power plants in China, though it has worked well in others – perhaps due to issues with the installation process. However, as a user or maintenance personnel, resistance is a wise choice. It is recommended to use rubber lining or composite material coatings.
The most commonly used material for desulfurization towers is glass flake resin; however, fiberglass chemical processing equipment is now popular. Although the initial investment is high, its service life is long and subsequent maintenance costs are low. The poster can consider using fiberglass.