Sakaphen - Shell and tube heat exchanger lining
Cuggiono’s facility is equipped with a furnace of 3,50 meter width 15,00 meter length and 3,90 meter height specifically built for the curing of baked linings and coatings.
The polymerization of these extremely corrosion resistant linings, with good mechanical properties, is obtained at temperatures in the range of 200°C. Different kind of polymer based products can be applied.
Pure Phenolic
These are linings specially suited for corrosion resistance in acidic environment, with pH ranging from 1 to 8, and operational temperatures ranging from –40°C and + 180°C. Typical dry film thickness is 80 to 200 micron.
Application of baked phenolics is widely used for the lining of chemical reactors, heat exchangers, compressor rotors, pumps, tanks and vessels for the food, winery and pharmaceutical industries.
Resistance to salt brine, potable and distilled water even at temperatures in the range of 100°C, is outstanding.
Modified phenolic-epoxy:
These are linings specially suited for corrosion resistance in caustic environment, with pH ranging from 4 to 14, and operational temperatures ranging from –40°C and + 180°C. Typical dry film thickness is 150 to 250 micron.
Application of epoxy-phenolics is widely used for the lining of chemical reactors, heat exchangers, compressor rotors, pumps, tanks and vessels for the food, winery and pharmaceutical industries.
Resistance to hydrocarbons, salt brine, potable and distilled water even at temperatures in the range of 100°C, is outstanding.
Surface Preparation and Application:
Design and steel preparation are of paramount importance for the successful application of the lining, the same holds true for an SSPC 5 –NACE 1 surface preparation with appropriate profile.
Application of the coating can be done by airless and/or low pressure spray; typical is also the flow coating.
The system is usually made of more than one layer with a pre-polymerization stage in the furnace at temperatures of 100°C (for the phenolics) and 140°C (for the epoxy-phenolics).