Choosing the right layup strategy can significantly extend boiler lifespan and reduce corrosion-related leaks, blockages and costly repairs. Cortec® is highlighting its range of innovative technologies designed to provide effective and convenient corrosion protection across boilers of all sizes.
- For midsize boilers, the well-established Boiler Lizard® remains a popular choice among water-treatment service providers. Supplied in a water-soluble tube, it is placed on the empty water side of the boiler and slit open to release Vapour phase Corrosion Inhibitors (VpCIs®), which adsorb onto metal surfaces. A single Boiler Lizard® protects up to 1,000 gallons (3.8 m³) of enclosed boiler space. It can be complemented by the Boiler Egg™, which releases additional protective chemistry during start-up. Both products dissolve in make-up water, reducing or eliminating the need for removal.
- For small boilers, Cortec® offers the Boiler Gecko™, which contains VpCIs® in an aerosol can. This allows the inhibitor to be sprayed directly into the water side or fire side of the boiler. One can treats 100 gallons (380 litres) of boiler volume. Once applied, openings are simply closed and the boiler can be restarted as normal.
- For large boilers, the Boiler Dragon™ provides bulk protection. This fogging solution is applied at a rate of one gallon per 1,000 gallons (1 litre per 1 m³) of boiler volume. All boiler openings should be sealed to prevent the escape of vapour-phase inhibitors. Like other Cortec® boiler reptiles, removal before start-up is typically unnecessary.
- In addition, in facilities where draining or opening boilers is not desirable, Cortec® offers alternative solutions. Boiler Turtle™ can be added to the feedwater or condensate system and pumped into the boiler, where it remains at high-water level for at least 24 hours before draining, if required. Meanwhile, the recently introduced VpCI® Chameleon™ provides an effective option for wet layup applications, particularly in food processing environments. With NSF G6 certification (registration number 172647), it is suitable where treated steam may come into contact with food.
These approaches deliver multi-phase corrosion protection both above and below the water line, without the intensive monitoring typically required for traditional sulphite-based treatments.