Biomass cogeneration plant Mödling
| Biomass cogeneration plant Mödling | |||
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| Coordinates | 48 ° 5 '5 " N , 16 ° 17' 52" E | ||
| Data | |||
| Primary energy | Bioenergy | ||
| fuel | Forest wood chips (40,000 t / a) | ||
| power | 5 MW (electric) + district heating | ||
| operator | EVN warmth | ||
| Start of operations | 2006 | ||
| turbine | Extraction condensation turbine (B + V Industrietechnik) | ||
| boiler | Water tube boiler (32 t / h steam, 70 bar, 485 ° C) | ||
| Firing | Grate furnace (Bertsch, A-6700 Bludenz) | ||
| Exhaust gas cleaning | Cyclone , electrostatic precipitator (Scheuch, A-4971 Aurolzmünster) | ||
| Website | [4] | ||
The Mödling biomass cogeneration plant supplies the district heating network in the greater Mödling area with the communities Mödling , Wiener Neudorf , Maria Enzersdorf , Brunn am Gebirge and Vösendorf and is operated by EVN Wärme .
history
At the end of the 1950s, NEWAG and NIOGAS decided to build their own main building in Maria Enzersdorf , and in 1960 a residential area was built in the southern part of the city . This was also the beginning of the district heating network in the greater Mödling area, as this was set up to supply the new properties.
In August 1960, the construction of a district heating power station in Mödling, Untere Bachgasse 6, began and was completed a year later. In 1961 the steam turbine with an electrical output of 2.98 MW was commissioned . At that time, natural gas and low-sulfur heating oil were used as the primary energy source for emergency operation - our own 8000 m 3 storage tank. In 2004 the steam turbine was decommissioned, the following year the oil tank was dismantled and the construction of a biomass cogeneration plant started on this site, which went into operation in 2006.
Technology of the biomass cogeneration plant
The biomass, exclusively wood chips , is delivered to the plant by trucks and tractors. First they drive over a weighbridge and then tip the wood chips into a bunker. From there, the wood chips from the forest are transported via moving floors and conveyor belts to a bunker room with a storage capacity of around 5,000 SRM .
After storage, the fuel is transported to the boiler - designed by the Austrian company Bertsch - which has a fuel heat output of around 28 MW and is operated with a drum pressure of around 63 bar (a). The superheater heats the steam to around 480 ° C before it is fed to the turbine. In order to ensure optimum combustion, the combustion air is preheated to around 200 ° C with turbine exhaust steam, which at the same time means an improvement in boiler efficiency.
The heart of the thermal power station is a steam turbine from Blohm + Voss (now part of MAN Diesel & Turbo ), coupled by means of a gearbox to a generator from Elin (Weiz) with an electrical bottleneck output of 5 MW. The electrical energy is generated in a turbo generator with a voltage of 6.3 kV and transformed to 20 kV via a machine transformer in order to feed into the electrical medium- voltage network of the Vienna energy.
The steam turbine has a quantity-regulated extraction, with which steam can be extracted for the Mödlinger steam network, and also a pressure- and quantity-regulated extraction from which steam is extracted for the district heating supply of the Mödlinger network.
The exhaust gas is cleaned by a multi-cyclone and an additional electrostatic precipitator .
Energy industry
The biomass cogeneration plant is recognized as a highly efficient combined heat and power plant, as the primary energy savings in the combined generation of electricity and heat are greater than 10%.
| Art | Power in MW | Work in GWh | comment |
|---|---|---|---|
| Wood chips | 28 | 174,000 | 263,000 SRM |
| electricity | 5 | 36,000 | Needs of 10,000 households |
| warmth | 15th | 72,000 | Needs of 10,000 households |
| steam | 3 | 18,000 | For the industry |
ecology
The CO 2 saving is more than 45,000 t per year, which is calculated from the generation of heat for district heating and the generation of electricity from biomass. The decrease in emissions for heat generation is documented in the emissions trading register. The system covers the entire district heating requirement and almost half of Mödling's electricity requirement. This more than halved Mödling's CO 2 emissions.
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 1.3% of the Lower Austrian population live in Mödling and the biomass cogeneration plant requires about 1.3% of the Lower Austrian wood increment that can be sustainably extracted, i.e. taking into account the biomass requirement for soil protection and valuable wood extraction.
literature
- Alois Brusatti, Ernst Swietly, A. Ernst: Heritage and order . EVN, company publication, St. Pölten 1990.
Web links
Individual evidence
- ↑ a b B + V Industrietechnik GmbH ( Memento of the original from January 7, 2011 in the Internet Archive ) Info: The archive link was automatically inserted and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. Page 12; Retrieved December 24, 2010
- ↑ a b c [1] ( 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. List of references from Bertsch, as of May 5, 2010
- ↑ [2] E-Filter, as of May 2010
- ↑ a b District heating from the Mödling district heating plant; EVN; Ing.Walter Reichl; Printing: Lower Austrian Press House
- ↑ Press release of the City of Mödling from May 18, 2005 ( Memento of the original from November 23, 2007 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. , As of May 2010
- ↑ Provincial Council Plank opens biomass district heating plant in Mödling , Lower Austrian Provincial Government, Public Relations and Press Service, October 20, 2006, as of October 10, 2010
- ↑ a b c d EVN AG press release of April 18, 2008; As of February 22, 2009
- ↑ Presentation about the biomass heating plant ( 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. ; in the download area of the city of Mödling, page 4, as of May 2010
- ↑ [3] ( 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. Emissions trading register data, as of May 5, 2010
- ↑ Alfred Trötzmüller in Green Town (PDF; 757 KB); October 2005, page 4; Accessed: June 22, 2010
- ^ Andreas Oberhammer; "System optimization of a biomass cogeneration plant for the regional energy needs of a municipality - practical example" ; 9th Symposium on Energy Innovation; As of May 5, 2010
