Duisburg-Walsum power plant

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Duisburg-Walsum power plant
Duisburg-Walsum power plant: Block 9 (left) and new block 10 (right) during ongoing operations
Duisburg-Walsum power plant: Block 9 (left) and new block 10 (right) during ongoing operations
location
Duisburg-Walsum power plant (North Rhine-Westphalia)
Duisburg-Walsum power plant
Coordinates 51 ° 31 '43 "  N , 6 ° 42' 43"  E Coordinates: 51 ° 31 '43 "  N , 6 ° 42' 43"  E
country GermanyGermany Germany
Waters Rhine
Data
Type coal-fired power station
Primary energy Fossil energy
fuel Hard coal
power 1,200 MW gross
1,095 MW net
owner STEAG and EVN AG (Energy Supply Lower Austria)
operator STEAG
Start of operations 1959 (block 7)
boiler 1 coal dust-fired Benson boiler - liquid ash removal, melting chamber (475 t / h) &

2 coal dust-fired Benson boilers - dry ash removal (1,206 t / h & 2,143 t / h) & 2 oil-fired auxiliary steam boilers (40 MW)

Chimney height 300 m (Block 7 and Block 9)
181 m natural draft wet cooling tower with combined use as a chimney (new block 10) m
Energy fed in 2016 5,623 GWh
Website www.steag.com
f2

The Walsum power plant is a hard coal-fired power plant in Duisburg-Walsum and is located on the site of the former Walsum colliery directly on the Rhine .

history

Blocks 6 through 9

At the Duisburg-Walsum site, a power plant was built in 1928 to cover the Walsum colliery's steam requirements . In 1957 it was expanded by a power plant block (Block 6) with 68 MW, in 1959 and 1960 two power plant blocks (Blocks 7 and 8) with 150 MW each (129 MW electrical net output) followed.

In 1988, block 9 replaced blocks 6 and 8. It has a gross electrical output of 410 MW (370 MW net output) and a district heating output of 295 MW.

Unit 7 is out of operation ( cold reserve ), but could theoretically go back into operation within a lead time of six months. Due to the age-related poor efficiency, restarting is not economical.

Block 10

Construction of Block 10 began in 2006. The commissioning, originally planned for the beginning of 2010, was delayed due to approx. 1,500 leaking welds. The trial run had to be interrupted in May 2011 due to renewed leaks in the evaporator section of the boiler. Welding problems with a new low-alloy steel called T24 (material 7CrMoVTiB10-10), which had been developed for higher pressures and temperatures, made it necessary to replace the tried and tested T12 steels (material 13CrMo4-5).

On April 6, 2013, the boiler was lit for the first time after the renovation. Only oil was burned. On April 18, 2013, hard coal was burned for the first time, but heating oil still had to be burned for safe operation. Since April 24, 2013, the plant has been running exclusively on hard coal. Initially, the new Block 10 was used with a maximum of 60 percent power, but no electricity was produced. The new steam turbine was initially not allowed to be used for electricity production because the manufacturer Hitachi had difficulties with other turbines of this type in Japan, suspected similar problems for the plant in Walsum and therefore did not give approval for use. Hitachi then issued approval in June 2013. On June 10th, the first electricity was generated with an output of 175 MW, which was fed into the grid. On July 4th, the plant reached 100% load for the first time (up to 800 MW under overload). In the months that followed, performance was gradually increased. Commercial operation began in December 2013.

The Lower Austrian energy company EVN , which has a 49% stake in the power plant, and the operator Steag received around 200 million euros as compensation for the delayed commissioning - originally 600 million euros had been requested. The investment volume rose due to the delays in the construction from the planned 0.8 to 1.1 billion euros.

Technical specifications

  • Blocks 7 and 9 (without the new block 10)

  • Power plant in 2010 with (outside) completed Unit 10 (chimney for Units 7 and 9 in the background)

  • Walsum power plant with Walsum south port in the foreground and Voerde power plant in the background

  • Block 10 (2013)

Power plant units and total output

Steag operates power station units 7, 9 and 10 at the Walsum location with a total electrical output of 1,335 MW gross (1,224 MW net).

As an inactive reserve power plant, Unit 7 has been in cold reserve since 2014 , so the actually available electrical installed capacity of the two active Units 9 and 10 together amounts to 1,185 MW gross (1,095 MW net).

Since Unit 7 was shut down and put into cold reserve, only Unit 9 has been producing district heating. Unit 10 only produces electricity without using the residual heat for district heating extraction.

The chimney for the old blocks 7 (cold reserve) and 9 is one of the highest chimneys in Germany with a height of 300 meters.

The chimney for block 10 is integrated into the 181-meter-high cooling tower ( clean gas discharge ). Such a high cooling tower was only built because of the exhaust gas discharge via the cooling tower. The technical alternative solution with a lower cooling tower without exhaust gas discharge and the connection of the new block 10 to the existing chimney was discarded by the operator Steag.

Effects of the new building (block 10) on the surroundings

In the new Block 10 (construction started in 2006), after various technical problems and delays, the boiler was fired for the first time in April 2013 after the renovation. In December 2013, regular operation began with a gross electrical output of 775 MW (net electrical output 725 MW).

The exhaust gases are discharged via the 181 meter high natural draft wet cooling tower - newly built only for Unit 10 - together with the steam plumes created by the cooling . This process is called clean gas discharge .

So far, the site for the operation of the old power plant units was not cooling tower needed to cool the old power plant units was carried through cooling realized.

With the commissioning of Unit 10 and the cooling tower with combined use as a chimney , the tower and the steam plumes that arise during operation will probably have undesirable effects on the microclimate at this location , for example locally increased amounts of precipitation and extensive shading.

For cost reasons, the operator Steag decided against building a hybrid cooling tower , which, in addition to the significantly lower height - approx. 1/3 (60 meters) - would also have generated considerably less steam .

  • Blocks 8, 7, 6 and coal mine power station

  • Blocks 7, 6 and coal mine power plant

  • Colliery power station, blocks 6, 7 and 8 (harbor side)

  • Nordhafen Walsum , coal mine power station, blocks 6, 7 and 8 (harbor side)

  • Block 9 (harbor side)

  • Block 10: boiler house and cooling tower with combined use as a chimney

Performance data (table) of the individual power plant blocks

Coal mine power plant Block 6 Block 8 Block 7 Block 9 Block 10
status shut down and canceled shut down and canceled shut down and canceled shut down in operation in operation
Installation 1928 1957 1959 1959 06/01/1988 December 20, 2013
Combustion heat output unknown unknown unknown 398 MW 980 MW FWL at nominal power: 1,575 MW / max. 1,750 MW including auxiliary steam generator
Gross output (nominal output
steam turbine) 		15 MW 68 MW 150 MW 150 MW 410 MW 775 MW / max. 790 MW
Own power consumption - 21 MW 40 MW 50 MW
Net nominal power - 129 MW = 32.4% 370 MW = 37.8% 725 MW = 46%

(with a planned maximum district heating extraction with a typical power loss index of 0.21: 685 MW = 43.5%)

District heating output - 95 MW = 23.9% 150 MW = 15.3%

(up to 295 MW possible)

0 MW

(planned: 190 MW = 12.1%)
Process steam - no use of the energy to generate process steam 75 MW = 7.7% No use of the energy to generate process steam
Combined heat and power - District heating District heating and process steam for paper mill no use of the energy to generate district heating or process steam
Energy losses (without self-consumption) - 153 MW = 38.4% 345 MW = 35.2% 800 MW = 50.8%

(with planned district heating production: 650 MW = 41.3%)

Energy losses (with self-consumption) - 174 MW = 43.7% 385 MW = 39.3% 850 MW = 54.0%

(with planned district heating production: 700 MW = 44.4%)

Degree of utilization (degree of fuel utilization for 12 months of district heating use per year) - 56.3% 60.7% 46.0% (planned: 55.6%)
Utilization rate (fuel utilization rate for 6 months of district heating use per year) - 41.0% 54.6% 46.0% (planned: 50.8%)
Chimney (height) Chimneys broken off 1 × 300 m Exhaust gases are discharged via a cooling tower with combined use as a chimney (181 m)
Cooling tower with combined use as a chimney (height) Continuous cooling (Rhine water), therefore no cooling tower required 1 × 181 m cooling tower with combined use as a chimney

Electricity production and coal consumption

Turbine block 9

In addition to electricity for the local power grid, the power plant (only block 9) also supplies the following major consumers:

  • Electricity, heat, water and compressed air for the Walsum colliery from 1928 until its closure in 2008.
  • Electricity and process steam for the adjacent Norske Skog paper mill from 1962 until it was closed in 2016.
  • Electricity, process steam, flue gas, compressed air and water for the PCC system from Specialty Minerals GmbH .
  • District heating for the Lower Rhine district heating network .

In addition to usable electricity production (2,260  GWh ), 33 GWh of district heating, 500,000 t of process steam and 250 million m³ of compressed air were produced (in 2007). Due to the closure of the neighboring mine in 2008, a large part of the compressed air previously produced is no longer required on site. In addition, the Walsum colliery is missing as a former bulk buyer of the electricity produced. Due to the changed conditions on the electricity market, the amount of electricity produced fell from 2,260 GWh in 2007 to initially 2,014 GWh in 2008. In 2011, electricity production again fell significantly to 1,331 GWh.

Electricity production and coal consumption at the Walsum power plant (Block 9 and Block 10)
year block Usable electricity output in gigawatt hours Coal consumption per gigawatt hour Total coal consumption
2007 9 2,260 GWh 398.23 tons 900,000 tons
2008 9 2,014 GWh KA b
2009 9 KD a KA b
2010 9 KD a KA b
2011 9 1,331 GWh Inquiry about coal consumption via portal www.fragdenstaat.de denied
2012 9 KD a KA b
2013 9 KD a KA b
2014 9 KD a KA b
2015 9 KD a KA b
2016 9 1,603 GWh (blocks 9 & 10 = 5,623 GWh) KA b
2016 10 4,020 GWh (blocks 9 & 10 = 5,623 GWh) KA b
a no data on the amount of electricity produced by the operator is available
b no information on the amount of coal burned

With an annual electricity production (2007) in the amount of approx. 2,260 GWh, only the only active power plant unit 9 (without the new construction unit 10 and without the disconnected cold reserve unit 7) consumed approx. 900,000 tons of hard coal per year.

This results in a theoretical consumption of 398.23 tons of hard coal per GWh for Unit 9 (in 2007) .

The coal storage hall on the site has a capacity of 34,000 tons of hard coal. Coal transport and ash removal are carried out by rail and via the northern port of Walsum . The power plant is connected to the 220 kV and 380 kV maximum voltage level in the network of the transmission system operator Amprion .

Operator, ownership shares and electricity purchase rights

The operator Steag belongs to a municipal utilities association (Stadtwerke-Konsortium Rhein-Ruhr consisting of the municipal utilities Bochum, Dinslaken, Dortmund, Duisburg, Essen and Oberhausen) and was taken over by Evonik Industries in two steps . Operator Steag has a 51% ownership share in Block 10 and is the sole owner of the old blocks 7 and 9. EVN AG (Energieversorgung Niederösterreich) holds a 49% ownership share in Block 10.

Wien Energie has a right to purchase electricity from Block 10 for 150 MW. In addition to Wien Energie, EnBW (Energie Baden-Württemberg) has another right to purchase electricity for the new block of 250 MW for a period of 20 years with an option to extend it. This means that electricity purchase rights of 400 MW go to companies in Austria (Wien Energie) and southern Germany (Energie Baden-Württemberg).

Property rights and electricity purchase rights (new construction of power plant unit 10)
owner Ownership shares Electricity purchase rights (nominal net output: 725 MW el.)
EVN AG (Energy Supply Lower Austria) 49% 159 MW
Wien Energie 0% 150 MW
EnBW (Energy Baden-Württemberg) 0% 250 MW
Steag 51% 166 MW

Emissions

Coal-fired power plants are criticized for their pollutant emissions. Even after the installation of filter systems in the 1980s, which remove most of the sulfur from the exhaust gases, coal-fired power plants continue to emit relevant amounts of sulfur dioxide . In addition to sulfur dioxide, nitrogen oxides , which are harmful to the environment and health, as well as fine dusts that are harmful to health , the heavy metals and PAHs they contain, enter the environment. In Germany, the energy industry contributed 71% (6.571 tons) to total mercury emissions in 2010 .

The pollutant emissions of all large coal-fired power plants are published in the European Pollutant Emissions Register (via the German portal Thru.de).

Emissions below the reportable quantity threshold are listed in the table with "<" next to the limit value.

Carbon dioxide, water and air pollutants (reporting years 2007, 2010 and 2011) of the Walsum power plant (Unit 9 only)
year power plant Amount of electricity produced Coal consumption Carbon dioxide (CO 2 ) Chloride - waste water - Nitrogen oxides (NO x / NO 2 ) Sulfur oxides (SO x / SO 2 ) Fine dust (PM 10 ) Inorganic fluorine compounds as HF Nitrous oxide (N 2 O) Fluoride (as total F) - waste water - Benzene (C 6 H 6 ) Lead (Pb) Chromium (Cr) Nickel (Ni) Mercury silver (Hg) Arsenic (as) Cadmium (Cd)
2011 Walsum power plant

-Block 9-

1,331 GWh k. A. <1,000,000 t <2,000 tons 1,090 t 971 t <100 t 33,400 kg <10,000 kg <2,000 kg <1000 kg <200 kg <100 kg <50 kg 15.3 kg <20 kg <10 kg
2011 Amount per GWh 1 GWh k. A. k. A. k. A. 0.819 t 0.729 t k. A. 25.093 kg k. A. k. A. k. A. k. A. k. A. k. A. 0.0115 kg k. A. k. A.
2010 Walsum power plant

–Block 9–

k. A. k. A. 1,940,000 t <2,000 t 1,410 t 1,240 t <100 t 46,200 kg 10,400 kg <2,000 kg <1000 kg <200 kg <100 kg <50 kg 26.2 kg <20 kg <10 kg
2010 Amount per GWh 1 GWh k. A. k. A. k. A. k. A. k. A. k. A. k. A. k. A. k. A. k. A. k. A. k. A. k. A. k. A. k. A. k. A.
2007 Walsum power plant

–Block 9–

2,260 GWh 900,000 t 2,120,000 t 2380 t 1,610 t 1,940 t <100 t 10,500 kg 11,900 kg <2,000 kg <1000 kg <200 kg <100 kg 70.2 kg 15.9 kg <20 kg <10 kg
2007 Amount per GWh 1 GWh 398.23 t 938.05 t 1.053 t 0.712 t 0.858 t k. A. 20.442 kg 5.265 kg k. A. k. A. k. A. k. A. k. A. 0.0070 kg k. A. k. A.

See also

Web links

Commons : Kraftwerk Duisburg-Walsum  - collection of images, videos and audio files

Individual evidence

  1. ↑ a b c d e power plant list of the Federal Network Agency , status: 7.3.2019
  2. ↑ a b c Power plants in Germany ( Memento of the original from October 15, 2012 in the Internet Archive ) Info: The archive link was automatically inserted and not yet checked. Please check the original and archive link according to the instructions and then remove this notice. Performance data in MW (database of the Federal Environment Agency). @1@ 2Template: Webachiv / IABot / www.umweltbundesamt.de
  3. ^ NN: Information sheet for the Duisburg-Walsum power plant. STEAG GmbH, March 9, 2017, accessed on February 25, 2018 .
  4. ↑ Ralf Ahrens: Pickling weakened welds in the power plant. In: ingenieur.de. VDI Verlag GmbH, August 13, 2010, accessed on February 25, 2018 .
  5. ↑ Stefan Endell: The breakdown block in the Duisburg-Walsum power plant goes online two years later. In: WAZ.de. Westdeutsche Allgemeine Zeitung, October 14, 2011, accessed on February 25, 2018 .
  6. ↑ Daniela Hünert: Corrosion processes and carburization of ferritic-martensitic steels in H 2 O-CO 2 atmospheres . Dissertation at the Federal Institute for Materials Research and Testing & TU Bergakademie Freiberg. In: BAM dissertation series . tape 61 . Berlin 2010, ISBN 978-3-9813550-4-8 (182 pp., Bam.de [PDF; 13.3 MB ; accessed on February 25, 2018]). Corrosion processes and carburization of ferritic-martensitic steels in H 2 O-CO 2 atmospheres ( memento of the original from September 23, 2015 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.  @1@ 2Template: Webachiv / IABot / www.bam.de
  7. ↑ Klaus Metzger: Use of the heat-resistant steel 7CrMoVTiB10-10 (T24) as pipe material in the 600-degree power plant - special quality assurance measures to avoid the formation of stress cracks . Dissertation at the materials testing institute of the University of Stuttgart. OPUS, Stuttgart 2016 (157 pp., Uni-stuttgart.de [PDF; 11.8 MB ; accessed on February 25, 2018]).
  8. ↑ Gregor Herberhold: Block 10 in the Walsum power plant is still no electricity. In: DerWesten. FUNKE MEDIEN NRW GmbH, May 29, 2013, accessed on February 25, 2018 .
  9. ^ Gregor Herberhold: New power plant block in Duisburg-Walsum supplies the first electricity. In: DerWesten. FUNKE MEDIEN NRW GmbH, June 13, 2013, accessed on February 25, 2018 .
  10. ↑ APA: EVN includes compensation for defects in “Walsum 10”. EVN and its partner Steag will receive around 200 million euros in damages for defects in the construction of the Duisburg-Walsum power plant. "Die Presse" Verlags-Gesellschaft, November 24, 2016, accessed on February 25, 2018 .
  11. ↑ emw-online.com ( Memento of the original from December 14, 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. Total output of the Walsum site 1,310 MW @1@ 2Template: Webachiv / IABot / www.emw-online.com
  12. ↑ steag.com ( Memento of the original dated February 8, 2016 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. Website of the power plant operator STEAG @1@ 2Template: Webachiv / IABot / www.steag.com
  13. ↑ a b c d e f Steag: Kraftwerk Walsum ( Memento of the original from June 19, 2013 in the Internet Archive ) Info: The @1@ 2Template: Webachiv / IABot / www.steag.com 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. . PDF file.
  14. ↑ a b c d e Steag: Walsum power station . PDF file.
  15. ↑ a b c Federal Network Agency power plant list (nationwide; all network and substation levels) as of July 2, 2012. ( Microsoft Excel file, 1.6 MB) Archived from the original on July 22, 2012 ; Retrieved July 21, 2012 .
  16. ↑ Steag aktuell / Walsum 10 ( Memento of the original from November 29, 2015 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. @1@ 2Template: Webachiv / IABot / aktuell.steag.com
  17. ↑ umweltbundesamt.de performance in MW (database of the Federal Environment Agency)
  18. ↑ a b vdv-online.de ( memento of the original from June 26, 2015 in the Internet Archive ) Info: The archive link was automatically inserted and not yet checked. Please check the original and archive link according to the instructions and then remove this notice. @1@ 2Template: Webachiv / IABot / www.vdv-online.de
  19. ↑ steag.com ( Memento of the original from November 14, 2011 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. @1@ 2Template: Webachiv / IABot / www.steag.com
  20. ↑ a b Walsum power plant on kohlekraftwerke.de
  21. ^ Yearbook of the European Energy and Raw Materials Industry 2010. VGE Verlag, Essen, ISBN 978-3-86797-046-4 , p. 356 ff.
  22. ↑ Inquire about coal consumption at the Walsum power plant on fragdenstaat.de
  23. ↑ a b Kraftwerk Walsum on steag.com
  24. ↑ Kraftwerk Walsum on metropoleruhr.de ( Memento of the original from February 21, 2014 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. @1@ 2Template: Webachiv / IABot / www.metropoleruhr.de
  25. ↑ Wien Energie, Annual Report 08/09, p. 47.
  26. ↑ strom-magazin.de
  27. ↑ enbw.com
  28. ^ Emissions development 1990–2010, Heavy Metals National Trend Tables for the German reporting of atmospheric emissions since 1990, Federal Environment Agency (Excel table), 2012
  29. ↑ Thru.de - data on Evonik Steag GmbH Walsum thermal power station