Mayr-Melnhof Karton GmbH (2005)
The energy recovery boiler plant at the Mayr-Melnhof Karton site in Hirschwang (near Wiener Neustadt, Austria) serves to provide the thermal treatment of waste from the cardboard manufacturing process. The fuels concern rejects from stock preparation and bio sludge from the effluent water treatment plant, as well as wood from single-use pallets and natural gas for the start-up and back-up burners. The heat recovery boiler generates saturated steam, which is further superheated in the existing natural gas boiler, together with the steam that is produced there. All of the superheated steam is then sent to the backpressure turbine, where the exhaust steam is used in the cardboard drying process. The plant is able to save up to 3,700,000 m³ of natural gas per year through the energy recovery of waste materials from the paper mills.
Scope of services
The scope of supply included the project management, engineering, procurement, transport and logistics, delivery, construction and commissioning of the above mentioned systems.
- Fuel storage system
- Fuel treatment system
- Fuel transport system
- Incineration
- Water tube boiler with economiser
- SNCR system
- Flue gas treatment system
- Balance of plant systems
- Ash handling system
- Instrumentation
- Control system
- Electrical system
- Building and civil works
Plant description
| Thermal output: | 4.8 MW |
| Steam amount: | 6.3 t/h |
| Steam pressure: | 80 bar |
| Steam temperature: | saturated |
Main fuel
| Rejects: | 7,500 t/a |
| Wood: | 5,000 t/a |
| Bio sludge: | 2,500 t/a |
Ort: Hirschwang (Austria)
Start up: 2005
