Corrosion protection, bioinhibitors, hardness stabilizers and oxygen binders for heat recovery and heat networks
Specialized treatment additives

Steam boiler and heating systems

Thanks to our customized chemical solutions and the expertise of our experienced engineers, we guarantee you extremely efficient and gentle operation of your system. Do not hesitate to contact us to carry out a comprehensive analysis of your plant and create a customized treatment plan. We are at your disposal to precisely identify your requirements and needs and offer you tailor-made solutions.
Protection against boiler scale, corrosion, contaminated condensate and foaming
Increase in heat transfer and thus the efficiency of the boiler system
Creation of individual treatment programs and professional advice from experts

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Alkalizers, dispersants, corrosion inhibitors, hardness stabilizers and oxygen binders

Aim of the chemical treatment of boiler feed water and steam boilers

The chemical treatment of boiler feed water is crucial for its efficiency and longevity. It includes a range of measures to prevent deposits and corrosion, improve water quality and optimize overall operation.
Oxygen binding: Oxygen in the feed water can cause corrosion in the boiler. Oxygen binding agents must be added to prevent corrosion damage in the boiler.
Prevention of scale formation: The residual hardness in the feed water can lead to limescale deposits. This can be prevented by using hardness stabilizers.
pH value regulation / alkalization: An ideal pH value is essential to prevent corrosion and deposits.
Dispersion of suspended solids: Suspended solids such as hardness sludge or iron oxides can build up in the boiler and impair performance.
Minimize foaming: Foaming boiler water can lead to problems in the steam pipes.

Product groups / operating resources

Below we present the most important chemicals used for the treatment and care of steam boilers.

Alkalizing agent

Alkalizing agents are essential to raise and stabilize the pH value of the boiler water. A slightly alkaline pH value is important to reduce corrosion and maintain the efficiency of the boiler. The p-value of the boiler water, also known as acid capacity KS 8.2, plays a central role here. Alkalizing agents can either be steam-volatile, whereby they also alkalize the steam and condensate network, or non-steam-volatile, whereby they remain in the water. These agents can be dosed individually or in combination with other products to achieve optimum results.

Oxygen binder

Oxygen binders are usually indispensable for the feed water, as degassing alone is often not sufficient to ensure adequate protection. Oxygen and CO2 are corrosive gases that can endanger the boiler. Oxygen binders reduce the amount of dissolved oxygen in the boiler feed water and thus protect various metal surfaces from corrosion through passivation. The exact dosage depends on the type of agent and the oxygen content. It is important that there is a surplus of the oxygen binding agent in the water in order to compensate for fluctuations in the oxygen input.

Scale counteractant / dispersant

Scale inhibitors and dispersants prevent deposits such as scale (limescale) or iron compounds (corrosion residues). Typical representatives of these agents include phosphates, phosphonates, complexing agents and polymers. These chemicals produce sludge in the presence of lime and prevent the solid caking of scale. The resulting sludge is removed from the boiler by blowdown to maintain the efficiency of the boiler and prevent deposits.

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Frank Kuntze

Sales Manager Water and Process Additives