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Retrofit & upgrade from Scheuch
Retrofit & upgrade from Scheuch
Retrofit & upgrade from Scheuch
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Successful retrofit project at EEW Pirmasens

Our customer

EEW Pirmasens is one of the leading companies in the field of generating electricity and heat through thermal waste utilisation and disposal. Every year, around 5 million tonnes of waste are recycled for energy and disposed of in an environmentally friendly manner in the Group's 17 plants. The energy contained in the waste is efficiently utilised to generate process steam for industrial plants, provide district heating for residential areas and produce environmentally friendly electricity that supplies around 700,000 households.

Customer wish
The Pirmasens waste incineration plant has two incineration lines, each with a downstream, multi-stage flue-gas cleaning system consisting of a dust pre-separation stage, a wet flue gas cleaning stage and a dry flue-gas cleaning stage. The dust content is reduced directly downstream of the combustion system by means of electrostatic precipitators and is used to relieve the downstream wet flue-gas cleaning stage.

Due to the advanced age of the existing electrostatic precipitators and the need to optimise dedusting by increasing separation efficiency, EEW decided to replace the electrostatic precipitators with new ones.

In this context, Scheuch was entrusted with the conversion of the two electrostatic precipitator lines. The first electrostatic precipitator line was converted in November 2023 and the second line will be converted in accordance with the project schedule at the end of 2024.

Renovation in record time
One of the customer’s main requirements was to minimise the duration of the overhaul in order to ensure the highest possible plant availability. The special feature of the project was therefore the extremely short turnaround time on the plant.

In order to meet the customer’s requirements, Scheuch pursued the concept of pre-assembled filters in combination with a coordinated and tightly synchronised project schedule for the disassembly and installation work. In addition, day and night shift work was also required throughout the entire conversion work to ensure that the project was completed on schedule.

This ensured that the conversion of the first line, from disassembly to readiness for warm commissioning, was completed in just 19 days.

Improved separation performance and reduced maintenance requirements
The conversion of the two electrostatic precipitator lines brings several benefits for EEW Pirmasens. One of the main benefits is that the renewal of the electrostatic precipitator guarantees the restoration of maximum plant availability. In addition, by increasing the separation volume in the electrostatic precipitator, the dust content upstream of the wet scrubber is significantly reduced. This improvement in turn has a direct impact on the maintenance effort for the downstream wet flue-gas cleaning stage.

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This is what our customer said

The cooperation with Scheuch was really good and very constructive at all stages of the project. All of the contact partners at Scheuch were and are always ready to listen to the concerns and wishes of the Pirmasens waste-to-energy plant.
– Dipl.-Ing. Christoph Maus

Retrofit & Upgrade from Scheuch
The successful retrofit project at the Pirmasens waste-to-energy plant shows that the challenging task of modernising existing plants (parts) can be accomplished in a very short period of time and thus with minimal impact on ongoing operations by working in partnership and close coordination.

In the course of modernisation measures, operational improvements can be made, thus reducing maintenance costs or operating costs, for example.

Further information on Retrofit & Upgrade at Scheuch can be found here:
scheuch-industrial-solutions.com/service/retrofit-upgrade/

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Further information on the metal industry can be found here:

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Service is always a key part of our portfolio.

Klaus Emprechtinger

Klaus Emprechtinger

Head of Sales
Energy Industry

Tel+43 7752 905-5369 k.emprechtinger@scheuch.com

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