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We have a highly specialised department which deals with removal of sediments from boilers (auxiliary, waste heat boilers) and pipe installations.

We can distinguish three main areas in this regard:

• mechanical cleaning
• chemical cleaning
• renovation/replacement of boiler fittings

We have all the necessary tools for these operations. Our pumps are adapted for aggressive chemicals and both basic and acidic chemical reagents, all kinds of water- and oil-based products (including used oils), resin dispersion, adhesives, paints, wastewater, electroplating liquid or sludge from tank cleaning operations. 

We also provide special connectors, stubs, plugs or flanges made to order. If needed, we can provide original sealing and valves or equivalent products.

Chemical cleaning

The aim of chemical cleaning is to remove sediments from the inner heating surfaces of boilers, exchangers, pipelines, power hydraulics system or other device. Sediments on heat exchanging surfaces cause the heat transfer coefficient to drop drastically, lower the cross-section of pipes and increases the porosity of the walls at the surface. It also results in higher energy consumption and more frequent failures caused by corrosive damage. The chemical cleaning process consists of transforming the sediments into water-soluble compounds and their removal from the inside of the cleaned device in the form of a solution or suspension. Chemical cleaning of equipment is a very effective process and it is much less cost-intensive than replacement of the boiler, exchanger or pipeline.

Advantages of chemical cleaning:

•  removal of sediments from difficult to reach surfaces,
• capability of effective removal of various deposits owing to the use of varying compositions of acids, inhibitors and other chemicals,
• capacity to carry out the de-coppering and maintenance processes,
• capacity to carry out effective passivation of the cleaned surface to protect it from stand-by corrosion.

Chemical cleaning is usually completed using the following methods:

• circulation method (most frequent) – closed loop: pump - tank - cleaned element - pump,
• oscillation method (filling and draining of equipment) – this method is used whenever it is impossible to circulate the bath in closed loop,
• static methods – this type of cleaning is used only when the above methods are not available (the cleaning solutions are mixed with nitrogen using the so-called auto-circulation, or compressed air).