Borregaard biopolymers are specifically developed for boiler water treatment. They prevent, inhibit and disperse deposits in boiler tubes, injectors, feed lines and economisers.
Steam generation in low and medium pressure boilers
Our products hold in suspension the carbonate, iron oxides and phosphate sludges formed in the reaction between water hardness, treating chemicals and corrosion products. Sludges do not adhere to the metal surfaces but are kept in the boiler water, where they can be blown down. They function by conditioning the sludge, thereby causing it to become considerably softer. The eventual formation of hard scale, which causes typically poor heat transfer, is minimised significantly.
Borregaard biopolymers also provide some protection against oxygen corrosion. They act not only as mild oxygen scavengers but also have film-forming ability. In addition, they possess complexing properties and will deactivate metallic ions to some degree.
Our biopolymers offer advantages, such as:
- Cost-effective performance
- Functional over a broad range of pH, temperature and electrolyte level
- Environmental advantages and low carbon footprint
- Compatibility with other formulation additives like polycarboxylates, HEDP, sodium citrate, gluconates, EDTA, NTA, triethanolamine and others
In-house dynamic flow tests demonstrate the dispersion ability of modern biopolymers.
Pionera wood-based dispersants outperform polyacrylate in dispersing many common contaminants in cooling circuits.
Complexing properties of Pionera biopolymers compared to EDTA and phosphates.
Corrosion rate measured in a mild steel coupon test
Laboratory work comparing Pionera biopolymers with zinc and phosphates.