Hardness stabilizers
Application area
Circulating water in open water-conducting systems, such as heat exchangers and air scrubbers are compared with the usual metallic materials corrosive to varying degrees. As such water is subject to the exchange of materials with the surrounding atmosphere, they are generally saturated with oxygen. At the same time presents itself, depending on the water quality, a certain tipping tendency. The required corrosion protection measures depend on the materials contained in the system, the operating conditions and the properties of the thickened water circulation.
Refrigerators and coolers with a carbon steel tubing for conventional materials also produce corrosion on a scale corrosion products that manage a complete stabilization of the iron compounds in the circulating water and removal of the blowdown anymore. The consequences are an increase of corrosion residue and a Verokerung the cooling system. Should such problems be avoided, are extremely low corrosion rates and a high iron-stabilization property is required. The GEWA hardness stabilizer is specifically designed for such systems and can be used in teilentkarbonisiertem circulating water or even at higher alkalinity. Non-ferrous metals are also protected by avoiding an electrically-induced corrosion of steel.
The best operating conditions are at positive saturation indices of 0.8 to 2.3 before
Product description
The product contains the anode and in the presence of hardness components, cathodic corrosion inhibitors acting on the basis of a special combination of Hydroxycarbonsäurephosphatester and a triazole derivatives. The combination of phosphonocarboxylic acids and a modified, low molecular weight polycarboxylic acid, a highly effective component to the stabilization of iron and phosphorus compounds, prevents the formation of Wasserstein and ensure a deposit-operation.
Dosage
The dosage should be in proportion to volume using a suitable dosing. The recommended dosage is a function of the water and the thickening 50 to 200 mg / l as the circulating water.