Description
Boilersolve PM 300– Range of boiler treatment protect boiler surfaces against the three common problems encountered:
- Scaling
- Corrosion
- Sludge Conditioning
- Scaling is the precipitation of substances, of which the solubility in the water has been exceeded, in a very dense and adherent form, onto the surrounding surfaces. It must be emphasised that precipitation can occur with the formation of a sludge which, because of its non-adherence, should be distinguished from scale.Calcium carbonate is the most common scale occurring in water systems although scale of sulphates, silicates and phosphates of magnesium, calcium, iron, manganese and zinc can also occur.These scale deposits adversely affect the heat transfer rate and may impede the flow of liquids to the extent that the throughput of the process is affected. Generally, scaling is accompanied by the entrainment of suspended solids and so the build-up of deposits is accelerated.The necessary factors for scale deposition to occur are super saturation of the compound in the water, nucleation and adequate contact time for adherence to occur
- Corrosion stated simply, general corrosion is the reversion of a metal to its ore form. Iron, for example reverts to iron oxide as the result of corrosion. The process of corrosion, however, is a complex electro-chemical reaction. Corrosion may produce general attack over a large metal surface or may result in pinpoint penetration of the metal