Plastic Piping Systems in the Power Generation Industry

STEULER-KCH supplies pipes for flue gas desulphurisation units used in coal-fired power stations – in particular, recirculation lines made of fibre-reinforced plastics. Materials from STEULER-KCH are the preferred choice wherever highly corrosive media must be handled and where conventional metallic materials cannot deliver due to insufficient resistance.

We design, manufacture and install pipes made from glass fibre-reinforced plastics (GRP) with thermoplastic linings (KERAVERIN®) and from pure GRP (KERAPOLIN). We primarily use polypropylene (PP) as a liner for the KERAVERIN® lining. It features high resistance to chemical attack and excellent abrasion resistance and is well able to withstand the stresses encountered in flue gas scrubbing units.

Pipes lined with this material comply with the applicable DIN standard 16965 part 2/ pipe type B. The dual-laminate material is known as KERAVERIN®. As GRP pipes with a chemical-resistant layer (KERAPOLIN®), our pipes without thermoplastic lining are covered under part 4/ pipe type D.

In order to ensure that these piping systems are also optimally protected against abrasion, we add a special filler to the chemical-resistant barrier (CRB) – always adapted to the requirements of the customer's production process. For spray lances used in flue gas scrubbers, for example, we apply the CRB both on the outside and inside, because this unit is exposed to particularly high stresses.

The operating temperature range is between -50 °C and approximately 200 °C, depending on the composite material used. We can naturally also supply highly flame retardant material systems suitable for use in areas with increased fire risk.

Our standard portfolio comprises products with nominal diameters from DN 25 to DN 1000, whilst the grading of the standard nominal pressure varies, depending on the nominal diameter, and starts at PN 16. We're well equipped to handle large nominal diameters too. We are able to fabricate items up to 5.5 m in diameter.

Naturally, we can also supply electrically conductive material systems suitable for use in areas subject to explosion hazards. Our pipes can be fabricated to be compliant with pressure equipment directives. We are also certified according to module H/H1.

STEULER-KCH's experienced specialists are there to provide you with expert assistance, from the initial consultation through to final assembly – in Germany and around the world. Our particular strength lies in consultancy: we work closely with our customers to select the combination of materials (liner, fibre reinforcement, resin matrix, etc.) best suited for the chemical, mechanical and thermal stresses expected in the plant. We develop custom combinations of materials in close consultation with our customers in the power generation industry.

The range of services we offer includes a plausibility check regarding design and materials and project support to ensure smooth and timely implementation, even for complex projects. We're flexible: alteration and customisation of the supplied pipes is possible at any time – even following delivery. Our after-sales service gives our customers the opportunity to share their experiences of completed projects, to learn about current product developments and if desired, to have the installed products inspected and evaluated.

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