Home » Equipment » External Coating of Filter Vessels for Demineralization Process – durable Corrosion Protection with ARC and CP Coatings

External Coating of Filter Vessels for Demineralization Process – durable Corrosion Protection with ARC and CP Coatings

The demineralization tanks showed heavy corrosion damages due to the chemically aggressive atmosphere and constant condensing humidity on the cold tank surfaces.

The challenge for this coating application was to achieve reliable protection without an extensive preparation of the substrate. Mostly, high-end coatings require a surface cleaned and roughened by sand blasting, which was not possible inside the building of our customer.

The solution was presented with CERAMIC-POLYMER STP-EP-HV; it is a surface tolerant system which features excellent corrosion protection with moderate substrate preparation. Therefore, the
surface treatment could be conducted by Sponge-Jet blasting – a dry and low-dust abrasive cleaning method. After this preliminary work, CERAMIC-POLYMER STP-EP-HV was simply applied by handtools. The recommended layer thickness is 250

Together with the thick-film epoxy compound ARC 858(E) for the rebuilding of damaged surfaces and the topcoat PROGUARD 169(37)

Steps of Application
1. Sponge-Jet blasting = Removal of rust and old coating, roughening of substrate
2. ARC 858(E) = Rebuilding of heavily corroded areas
3. CERAMIC-POLYMER STP-EP-HV = long-term protection layer with anti-corrosive properties
4. PROGUARD 169 (37) = resistant topcoat, available in lots of colors

After Jet-Sponge blasting, ARC 858(E) ures a long-lasting upgrade and reliable corrosion protection for new and old storage tanks as well as technical equipment. ARC 858(E) is easily applied by trowel.

Next step was the application of the high-performance coating CERAMIC-POLYMER STP-EP-HV. This product offers outstanding corrosion and abrasion protection in aggressive environments. Due to its high resistance against chemicals and humidity, CERAMIC-POLYMER STP-EP-HV prevents the tanks effectively from corrosion effects by the existing chemical vapors and moist atmosphere. The coating can be applied by airless spraying method or by brush or roller. This product is also available as convenient cartridge system; a clean and economical coating solution for repairs, small areas and areas which are difficult to reach.

PROGUARD 169 (37) is a 2-component highly-crosslinked polyurethane coating. The Topcoat provides long lasting resistances according to ISO 12944-2, corrosivity class C5. Thus, it is used in industrial environments with high humidity and aggressive atmospheres

Leave a Reply

Your email address will not be published. Required fields are marked *