Dombasle, France
Case Study – The ecological footprint
Location
Planning period
February 2022 - November 2022
Bulk material
non-recyclable refuse derived fuels (RDF)
State-of-the-art refuse derived fuel power plant
The new RDF cogeneration plant is part of a large-scale regional energy transition project replacing coal with refuse-derived fuels to generate clean as well as competitive energy for a French soda plant at the Dombasle site. The new RDF plant is expected to reduce CO₂ emissions from the historic plant by 240,000 tons per year, equivalent to a 50% reduction. Upon completion of the new RDF plant in 2024, the Dombasle region will have a state-of-the-art combined heat and power plant capable of converting up to 350,000 tons of RDF per year into energy. Loibl Förderanlagen GmbH supplied a total of four apron wet slag conveyors for the new RDF power plant, which will be used to cool and convey the incinerated residual materials.
Ash and slag conveyor systems by Loibl
The wet deslaggers used in the new RDF power plant are installed directly below the grate firing system and are set up at a 40-degree angle. They are filled with water, which enables them to cool the burned RDF quickly and reliably. Cooling RDF uses less water overall than cooling burned coal residue, reducing the soda ash plant's annual water consumption by 7%. The cooled residues are conveyed to an adjacent slag bunker by means of robust apron conveyors.
Scope of supply and services
- Consulting and planning
- Basic and detail engineering
- Production in Straubing, Bavaria
- Plant construction consisting of: 4 apron wet slag conveyors
- Delivery
- Installation approval and commissioning
Refuse-derived fuels instead of coal
Refuse-derived fuels are usually derived from non-recyclable waste. They can be recovered as solid fuels that replace fossil resources. For example, the RDF used at Dombasle prevents the use of 200,000 tons of coal per year, which was previously needed to operate the long-established soda plant. The switch will generate clean, competitive energy that will sustainably improve the region's environmental footprint.
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