Weener RDF power plant
| Weener RDF power plant (Weener steam center) | |||
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| location | |||
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| Coordinates | 53 ° 10 '58 " N , 7 ° 21' 11" E | ||
| country |
 Germany
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| Data | |||
| Type | Substitute fuel power plant | ||
| fuel | Substitute fuel | ||
| power | 2 × 4.6 MW el. Gross + 70 MW therm. | ||
| operator | Weener energy | ||
| Project start | 2006 (permit application) | ||
| Start of operations | May / June 2008 | ||
| Firing | Grate firing | ||
| Weener Energie GmbH & Co. KG
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| legal form | GmbH & Co. KG |
| founding | 2006 |
| Seat | Weener , Germany |
| management |
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| Branch | disposal |
| Website | www.weener-energie.com |
The Weener RDF power plant , also known as the steam center Weener or the name of the operator Weener Energie , is a substitute fuel power plant , or RDF power plant for short , in Weener in East Frisia.
The heat and power plant supplies the paper mill Weener the Klingele paper mills with heat for the drying of the paper and partly with power. It is a cooperation project between Klingele Papierwerke (Weener paper factory) and the energy service provider N.prior energy .
The power plant is operated with substitute fuels (RDF), some of which come from residues from the associated paper production. By generating electricity and heat on site in Weener, the RDF power plant replaces around 32 million m 3 of natural gas, according to the operator, and saves 55,000 tons of fossil CO 2 emissions per year.
Technical system structure
The Weener Energie RDF power plant generates steam and electrical energy through thermal utilization of substitute fuels to supply the paper mill of Klingele Papierwerke . Around 150,000 tons of substitute fuels are used annually to generate energy.
Delivery and storage
The fuel delivered by truck mainly comes from suppliers in the region and is handled in a bunker. In order to compensate for the different calorific values of the fuels, they are mixed in the bunker in such a way that a homogeneous fuel flow is created for combustion. The necessary stockpiling of the equipment takes place exclusively in suitable silos with dust separation.
Incineration and energy generation
The fuel is fed to the boiler via a feed hopper with a water-cooled shaft, at the lower end of which there is a feed slide that conveys the material onto the furnace grate . There are level measuring units in the side walls of the shaft to optimize the fuel feed. In addition, the operating staff has the option of checking the fill level with a camera.
The steam energy generated in the boiler through thermal utilization of the fuels is supplied to the paper mill via a steel jacket pipeline laid underground approx. 1.8 km in length. The steel jacket pipe offers a high level of operational reliability for the underground transport of steam, even in difficult ground conditions. The tightness of the system is permanently monitored with the vacuum in the annulus and heat losses are reduced by approx. 30%. In the paper mill, the steam at approx. 320 ° C and 27 bar is primarily converted into electrical energy using a back pressure turbine . The exhaust steam from the turbine at approx. 8.5 bar is used entirely in the production of the paper mill. Brief load fluctuations in the paper mill, which are accompanied by changes in the steam requirement, are compensated for with the help of a steam accumulator. In the event of a complete failure of the paper mill and for the expected load fluctuations in the steam supply , two condensation turbines are available in the power plant. The condensed steam is fed back into the water-steam circuit of the steam center.
environmental Protection
- Reduction of nitrogen oxides (NO x ) through an SNCR system (Selective Non-Catalytic Reduction)
- Guarantee of compliance with the 17th BImSchV through a flue gas cleaning system
- Permanent emission monitoring by TÜV-tested, calibrated and approved measuring device in the exhaust stack
Technical specifications
fuel
- Standard fuel: substitute fuels (RDF)
- Fuel quantity: approx. 150,000 t / a, 22 t / h
- Density: approx. 0.25 t / m 3
- Calorific value: approx. 14,000 kJ / kg (on average)
Overall system
- Thermal: approx. 70 MW
- Steam output: approx. 45 t / h (on average)
- Power generation: approx. 7.5 MW
- Own electricity requirement: approx. 1.2 MW
- Net electricity output: approx. 6.3 MW
Web links
Individual evidence
- ↑ a b c d Weener steam center. (PDF; 1.3 MB) Information brochure. Weener Energie, accessed December 17, 2010 .
- ↑ Weener RDF power plant. Klingele Papierwerke GmbH & Co. KG, accessed on January 30, 2016 .