In addition to being found within industrial exhausts and extraction systems, coated impellers can also be installed in (centrifugal) pump systems to pump aggressive mediums, including but not limited to chemically saturated water caused by the exhaust filtration, water from the coking process or liquids recirculated for chemical cleaning.
SÄKAPHEN’s exceptional linings and coatings provide high quality protection against chemical corrosion even at elevated temperatures and reducing abrasion, incrustation of solids and cavitation.
The success of SÄKAPHEN linings and coatings can be observed when applied to centrifugal pump wheels as seen in the coking process, in quenching towers the coke is extinguished with water as last step of the coking process to prevent burning. The water is then collected and pumped for further treatment. The Pump Wheels installed in the centrifugal pumps are relatively small at 400mm diameter x 50mm width but used to pump large volumes. Operating at temperatures of plus 100°C, the water stream contains wide ranging chemicals that can include Ammonia (NH3), Carbon Dioxide (CO2), Sulfides and Chlorides with trace amounts of phenols. Furthermore, the stream contains a considerable level of Ferric Ferrocyanide, which is not only abrasive but can also cause clogging of the pump due to incrustation.
SÄKAPHEN has set the standard in servicing bespoke coatings and linings. Prior to our custom-made solutions, incrustation issues and corrosion caused pumps to be out of action every 3 weeks or so. Subsequent Pump Wheels coated with SÄKAPHEN's ceramic filled Heat Cured Epoxy-Phenolics extend this period up to 2 years. The then developed product was called Si 570 AR (Abrasion Resistance) and is now also applied in heat exchangers.
For any specific chemical resistances, fields of use, technical questions or other lining and coating queries, please feel free to contact us for advice, we are always happy to provide support.