Biomass cogeneration plant in Steyr
| Biomass cogeneration plant in Steyr | |||
|---|---|---|---|
 |
|||
| location | |||
|
|||
| Coordinates | 48 ° 3 '46 " N , 14 ° 27' 27" E | ||
| Data | |||
| Primary energy | Bioenergy | ||
| fuel | Forest wood chips (40,000 t / a) | ||
| power | 5.7 MW (electric) | ||
| owner | Bioenergy Steyr GmbH | ||
| operator | Bioenergy Steyr GmbH | ||
| Start of operations | 2012 | ||
| turbine | Back pressure turbine (MAN) | ||
| boiler | Water tube boiler (33 t / h steam, 90 bar, 525 ° C) | ||
| Firing | Grate firing (white) | ||
| Exhaust gas cleaning | Cyclone , electrostatic precipitator (Scheuch, A-4971 Aurolzmünster) | ||
| Website | Homepage of Bioenergie Steyr | ||
The biomass cogeneration plant Steyr is a biomass power plant , which in Steyr and Ramingdorf (municipality Behamberg ) exactly at the limit of federal states of Lower Austria and Upper Austria stands. It supplies the Steyr district heating network and is operated by Bioenergie Steyr GmbH.
At the end of 2011, construction began on the biomass cogeneration plant, which was completed in 2013. In 2012, a pipeline network around 11 kilometers long was set up to supply customers in Steyr and Ramingdorf. Industrial areas such as the one in Münchholz with the BMW engine plant and SKF , the MAN industrial area, the Ramingdorf industrial area and residential buildings in Münichholz , Ennsleite, Resthof and Tabor are supplied with biogenic heat.
ecology
The CO 2 saving is more than 50,000 t per year, which is calculated from the generation of heat for district heating and the generation of electricity from biomass .
The local added value is high through the use of forest chips as a primary energy source and there is a balance between renewable raw materials and consumption. About 3% of the Upper Austrian population live in Steyr and the biomass heating plant requires about 3% of the Upper Austrian wood increment that can be sustainably extracted, i.e. taking into account the biomass requirement for soil protection and valuable wood extraction. In addition, this system saves 0.3 per thousand of the total Austrian fossil fuel imports and replaces them with local forest chips. 3% of Austria's green electricity from forest biomass is generated in the biomass cogeneration plant.
The biomass combined heat and power plant achieves an overall efficiency of over 90% in the winter months. It supplies the electricity to the distribution network of Netz Niederösterreich GmbH (EVN Group), whereby the self-generated electricity required for the operation of the system is generated itself. The officially prescribed dust emission limit values are 60% below the legally prescribed values. Forest biomass, consisting of branches, tree tops, rotten pieces of wood or broken wood is used for energy; thus a recycling possibility is created for these products. This type of forest biomass extraction is used for forest maintenance and protection. The required biomass comes from the region and is delivered from a radius of around 40 kilometers. Wood chips from the thinning of the local forests are used.
By switching to electricity from regenerative sources and the environmentally friendly, climate-neutral process heat from the Steyr biomass cogeneration plant, the BMW engine plant has been saving more than 30,000 t of CO 2 annually since 2013 .
technology
As part of the industrial architecture, the building was optimized in terms of its external shape for both sound and thermal cooling effects.
Turbine picture with explanation
If you move the mouse pointer over the picture, you get an explanation of the components, with the corresponding link in Wikipedia.
Steam turbine of the biomass cogeneration plant . Year of construction 2012, power: 5,000 kW, rotor speed: 11,400 1 / min
Fuel logistics
The plant has a closed wood chip store from which the biomass (wood chips from the forest) is continuously brought to the biomass steam boiler by means of a moving floor and further by means of conveyor belts .
Firing
The biomass falls from the conveyor belt into two standing fuel storage shafts, which can be controlled separately by a flap in the drop shaft. Protective devices such as two guillotine valves as well as water injection and other protective measures are installed there to prevent burn-back from the boiler.
The biomass is brought into the grate furnace using two hydraulically operated inserts. The biomass then falls onto a step grate that ends with a folding grate. Ash removal is carried out by a wet ash remover located under the grate, which is removed by means of a trough chain conveyor .
Steam generator
The biomass boiler has a fuel output of 29.9 MW and generates 30 t / h of live steam at a pressure of around 90 bar at a temperature of 525 ° C. The water tube boiler is designed as a 5-pass vertical design as a natural circulation boiler . The walls of the first to third flue gas flues consist of fully welded, gas-tight fin tube walls , the first and second flue being designed as a pure radiation part in between with a bulkhead heating surface . There are three superheater bundles in the third pass . The fourth and fifth flue gas pass are pure convection passes without fin tube walls, in which the first two superheater bundles and the economiser heating surface bundles are suspended. The saturated steam produced in the boiler is then superheated in five superheater packages ; these tube packages are cleaned discontinuously by five lance screw blowers.
Flue gas cleaning
The plant has exhaust gas treatment by means of an SNCR system , multi-cyclone , electrostatic precipitator , silencer and a chimney.
Heat and electricity generation
The steam flows to a back pressure turbine which provides around 5700 kW and whose exhaust steam is used in full to generate district heating. A district heating buffer with a volume of 254 m³ is used to compensate for the generation peaks of district heating .
Web links
Individual evidence
- ↑ MAN steam turbines ( page no longer available , search in web archives ) Info: The link was automatically marked as defective. Please check the link according to the instructions and then remove this notice. (PDF; 2.8 MB); accessed on 10 XII 2012.
- ↑ E-Filter , as of 2012.
- ↑ Energie AG and EVN will supply Steyr with environmentally friendly district heating from local forests in the future. on: Upper Austria news. March 2, 2012, accessed XII 2012.
- ↑ District heating from biomass for Steyr
- ↑ construction report; Retrieved on March 1, 2013 ( Memento of the original from March 18, 2018 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice.
- ↑ a b c d Andreas Oberhammer among others: Biomass district heating for Steyr. ( Memento of the original from September 28, 2013 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. District heating days 2013, German Gas Association (PDF; 18.2 MB)
- ↑ Long Night of Research 2014
- ↑ BMW Group Annual Report 2013, p. 34.
- ↑ Long Night of Research 2014, Industrial Architecture - What is it? Do you know that?
