EcoHPC PLUS Filter Sleeve Cage Coating Treatment

EcoHPC PLUS Ecological High-Performance Coating

EcoHPC PLUS is the name that distinguishes the highest and most significant achievement reached in a filter sleeve cage coating treatment.

Relying on CleanAir’s knowledge and experience in the filtration industry, the continuous search for new, higher-performing solutions has led to the development of a treatment with low environmental impact, entirely designed for finishing and protecting filter sleeve cages.

The EcoHPC PLUS process is an electrodeposition treatment that offers strength and durability over time, ensuring consistent quality in the finished product thanks to a fully-automatic cycle in which every single phase is monitored.

Filter sleeve cages made with EcoHPC finishes guarantee:

elevated strength during storage and installation at the customer’s site;
great strength once installed and subjected to the aggressions of external agents;
an absence of the classic phenomenon of abrasion on the filter sleeves;
high mechanical resistance of the electrodeposited film;
elevated resistance to vibrations and rubbing.

Proper and lasting filtration starts with the reliability, quality and durability of filter sleeve holders.

CleanAir’s EcoHPC PLUS treatment is part of the value chain of the filtration process, helping to increase the quality and durability of the system’s proper operation over time.

EcoHPC PLUS Ecological High-Performance Coating

Electrodeposition process and the evolution of the EcoHPC treatment

The electrodeposition process is a surface treatment able to confer considerable corrosion resistance to carbon steel elements. It is characterised by the uniform deposit of an epoxy resin on the surface of the element, ensuring extraordinary protection against chemical agents and other types of aggressions for an extensive period of time.

EcoHPC: a treatment with reduced environmental impact

In the EcoHPC process, the electrodeposited product is dispersed in water, meaning the paint is not dissolved in chemical solvents. The process is thus characterised by a very low environmental impact. The solvent waste is actually toxic and harmful, however the excess paint in the EcoHPC process is re-circulated and reused rather than necessarily being subject to a purification phase, with the obvious advantages of eradicating the risk of dispersion of pollutants.

EcoHPC: the search for greater resistance with reduced environmental impact

The EcoHPC process is a surface treatment capable of giving the filter sleeve supports a level of corrosion resistance that has never before been achieved. CleanAir’s experience in this type of process comes from being the first company in the industry to introduce electrodeposition treatment into its machining cycle, creating an in-house production division entirely dedicated to this type of processing.

The EcoHPC treatment is characterised by the uniform deposit of an epoxy resin that adheres to filter sleeve supports as a real chemical bond, ensuring an inherent protection that is not merely superficial but is homogeneous across the entire surface and effective against weather, chemical and physical agents for an extensive amount of time.
This treatment ensures greater protection from rust and prevents oxidation from expanding below the paint, given that the latter is chemically bound to the metallic surface.

Electrodeposition is a treatment that gives the filter sleeve support a high resistance to atmospheric agents, particularly in the event of exposure to aggressive environments with the presence of moisture, heat or salts. The cathode-type electrodeposition system allows chemical resistance values to be reached that are 50% higher than the traditional anodic system. The mechanical properties of the protective film are also greatly improved.

CleanAir’s EcoHPC treatment is exclusively dedicated to processing filter sleeve supports and relative accessories, able to achieve highly-homogeneous thicknesses in the coating, even on parts of the filter sleeve supports that are difficult to reach. This ensures extensive corrosion resistance even under extreme temperature and pressure conditions.

One of the secondary advantages of the EcoHPC treatment is the elimination of the annoying stitching effect, coming as the result of adhesion of the filter sleeves to the metal supports that noticeably increases the difficulty and time necessary for replacements.

EcoHPC Treatment

For decades, we have utilised this coating system in a range of fields (cement plants, incinerators, biomass plants, power plants, steel mills) with excellent results, having even completed various large-scale projects with big-name customers. Please contact us to see the references.

Below is a brief explanation of our EcoHPC coating process able to withstand continuous temperatures of 250° C and eliminate the presence of any stitching effect with the filter sleeves.

The filter sleeve holder is cleaned and degreased in various tanks with the help of nanotechnology, in water and sodium baths at a temperature of 50° C for about 15 minutes
Residues are eliminated from the surface in two stages, immersing the filter sleeve supports in tanks with demineralised water and other solutions:
- Water with room temperature
- Electrical conductivity < 50
- 30% Sodium Hydroxide solution
- Hydrochloric Acid
Electrolytic painting consisting of:
- 10% pigment paste and epoxy resin in demineralised water
- Emulsion temperature of 27-28° C
- Electrical voltage of 380 V
The final cleaning of the filter sleeve holder is via the wash and rinse coating in various tanks for 5 minutes then a draining wash for 8 minutes
The paint is cured in an oven at 180° C for around 20 minutes
The filter sleeve holders are placed directly in the crates, ready for shipping

Pre-treated and black powder-coated cages

Thickness: 50 µ
Penetration on cross-engraving with loss of film adhesion.
Unaltered on-site.
A few points of oxide formation on the welds.