Zolling power plant
| Zolling power plant | |||
|---|---|---|---|
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| location | |||
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| Coordinates | 48 ° 27 '18 " N , 11 ° 47' 56" E | ||
| country |
 Germany
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| Waters | Amperes | ||
| Data | |||
| Type | Hard coal power plant , gas turbine power plant , biomass power plant | ||
| Primary energy |
Hard coal gas turbine system: heating oil EL biomass cogeneration plant: wood chips from waste wood |
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| power | Block 1 • 40 MW Block 2 • 50 MW Block 3 • 75 MW Block 4 • 100 MW Block 5 • 501 MW GTA • 2 × 25 MW BMHKW • 21 MW |
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| owner | Onyx Power Assets GmbH
BMHKW • Biomasseheizkraftwerk Zolling GmbH |
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| operator | Onyx Power Assets GmbH | ||
| Project start | 1955 | ||
| Start of operations | Unit 1 • October 4, 1958 Unit 2 • 1961 Unit 3 • 1964 Unit 4 • 1966 GTA • 1976 Unit 5 • 1986 BMHKW • 2003 |
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| Shutdown | Block 1 • 1982 Block 2 • 1984 Block 3 • 1987 Block 4 • 1987 |
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| Firing | Block I-IV • Melting chamber furnace Block V • Coal dust furnace BMHKW • Traveling grate furnace |
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The Zolling power plant is a power plant owned by Engie Kraftwerk Zolling GmbH & Co. KGaA in the Upper Bavarian municipality of Zolling . It is named after the chairman of the board at that time, Heinrich Leininger of Isar-Amperwerke AG , and is therefore also known as the Leiningerwerk or Leininger power station ( KWL ). Today it is used to generate electricity and heat from fossil and renewable fuels.
In the past, four hard coal units with melting chamber firing were in operation, which were shut down in the late 1980s as a result of the disaster in Unit 3. In 1986, with a gross electrical output of 450 megawatts (MW), Unit 5 with the then novel flue gas desulfurization system went into operation.
Today, the Zolling power plant burns an average of 400,000 tons of hard coal per year, which is ground to hard coal dust in the five vertical roller mills before it is burned . The coal is delivered by rail to the power station's own station on the Langenbach – Enzelhausen railway line and temporarily stored on the power station's four coal heaps . The fuel consumption at full load is around 147.5 t / h, depending on the current calorific value of the hard coal used. With its 220 meter high chimney and 80 meter high cooling tower, Block 5 is equipped with environmental protection devices for denitrification , dedusting and desulfurization of the flue gases. The cooling water required for operation is taken from the Amper Canal created for the Haag hydropower plant and, after being used in the power plant, is returned to the river after being cooled down. Every year up to 35,000 tons of mechanically dewatered sewage sludge are incinerated. When operating the power plant blocks, district heating is decoupled and, among other things, the city of Freising and Munich Airport are supplied.
In the event of a possible breakdown of the transmission network, block 5 can be supplied with power for start-up via one of the two gas turbines that are also located at the site , so that the system is black-start capable .
Since the end of 2003, another block fired with biomass has been supplying additional electricity for around 40,000 households, as well as (optional) district heating. The system is designed to also use heavily polluted waste wood of category A IV, in particular railway sleepers . The fuel is delivered by truck.
history
The Zolling power plant was designed by Isar-Amperwerke AG , which was created in 1955 from the merger of Amperwerke AG and Isarwerke AG . Unit 1 went into operation on October 4, 1958. By 1966, the power plant was expanded in four stages to a total output of 265 megawatts. In 1976 a gas turbine plant with an output of 2 × 25 MW was commissioned. In 1986, block 5 was put into operation with modern environmental protection technology and special control technology for rapid load changes.
Units 3 and 4 were to serve as reserve power plants and after unit 5 was commissioned, only a maximum of 1000 operating hours per year would be used. On March 23, 1987, there was a severe boiler explosion in Unit 3, in which Units 3 and 4 were irreparably damaged. 2 employees were killed. As a result, these blocks were also shut down and demolished in 1989.
Sewage sludge has been co-incinerated in the power plant since 1998 .
In June 1999 Isar-Amperwerke AG was taken over by Bayernwerk AG , which belongs to the VIAG Group .
13 months later, in July 2000, the company merged VIAG and VEBA to E.ON . The power plant location was incorporated into E.ON Kraftwerke GmbH .
In 2003 the biomass cogeneration plant was built.
In May 2008, E.ON announced that the Zolling power plant would also be sold in the course of the sale of 4,800 MW power plant capacity to avert antitrust proceedings by the EU .
On October 12, 2008, the power plant celebrated its 50th anniversary as a site. On November 5, 2009, it was taken over by the GDF Suez Group (since 2015 Engie ).
On July 14, 2010 there was an accident in which 1500 liters of hydrochloric acid leaked.
In 2011, Block 5 underwent a major overhaul. The main focus of this revision was directed to the retrofit of the turbo group , the major control technology upgrade and the replacement of the machine transformer . Thanks to the new turbines and the subsequent change in the live steam parameters, the net output could be increased from 449 megawatts to 472 MW and the electrical efficiency increased to 43.3%. The flexibility of the power plant was increased through the conversion of the control technology to the process control system 800xA from ABB . A total of around 80 million euros were invested in this overhaul in order to prepare the power plant for the future.
On October 18, 2018, the official groundbreaking ceremony took place for the sewage sludge drying plant, which is approved for up to 150,000 tons of mechanically dewatered sewage sludge annually. For the operation of the plant, energy is drawn from the two power plant units via efficient combined heat and power . The dried sewage sludge is temporarily stored in a decommissioned heavy oil tank and fed to the coal mills when the power plant is in operation .
After lengthy negotiations, it was announced on March 26, 2019 that Engie's stakes in the Zolling power plant would be taken over by the US company Riverstone Holdings . On November 30, 2019, the acquisition via the newly founded power generation company Onyx was completed.
Technical specifications
The Zolling power plant today consists of two power plant blocks and two gas turbines with a total gross output of 572 MW. Four old hard coal units with a gross total output of 265 MW have been decommissioned and were completely demolished in 1989. Unit 5 is the most powerful hard coal unit in Bavaria with a gross electrical output of 501 MW.
Overview of the power plant units
| Power plant block | Boiler type | fuel | start of building | Installation | Electrical power | Network connection | District heating output | status | |
|---|---|---|---|---|---|---|---|---|---|
| net | Gross | ||||||||
| Block 1 | drum | Hard coal, heavy fuel oil | 1956 | 1958 | 38 MW | 40 MW | 110 kV | Shut down | |
| Block 2 | drum | Hard coal, heavy fuel oil | 1959 | 1961 | 48 MW | 50 MW | 110 kV | Shut down | |
| Block 3 | drum | Hard coal, heavy fuel oil | ~ 1961 | 1964 | 71 MW | 75 MW | 110 kV | Shut down | |
| Block 4 | drum | Hard coal, heavy fuel oil | ~ 1963 | 1966 | 97 MW | 100 MW | 110 kV | Shut down | |
| Block 5 | Benson | Hard coal, sewage sludge | 1982 | 1986 | 472 MW | 501 MW | 220 kV | 150 MW th | In operation |
| Block 6 BMHKW | drum | Biomass (waste wood) | 2002 | 2003 | 20 MW | 21 MW | 110 kV | 30 MW th | In operation |
Overview of the gas turbines
Two gas turbines with a total output of 50 MW are in operation at the Zolling power plant and are used to cover peak loads . The planning for another gas turbine was stopped.
| Gas turbine | fuel | start of building | Installation | Electrical power | Network connection | status |
|---|---|---|---|---|---|---|
| Gas turbine 1 | Heating oil EL | 1976 | 1976 | 25 MW | 110 kV | In operation |
| Gas turbine 2 | Heating oil EL | 1976 | 1976 | 25 MW | 110 kV | In operation |
| Block 7 | natural gas | (2020) | (2022) | ~ 300 MW | 380 kV | Planning stopped |
Block 7
In 2017, Engie announced that the construction of a gas turbine (block 7) was planned on the premises of the Zolling power plant and that the company would participate in the planned tender. At the end of June 2018, the network operators Tennet , Amprion and TransnetBW tendered a total of 1,200 MW of capacity for special network equipment according to Section 11 (3) EnWG across Europe and in a technology- neutral manner . The capacity is to be divided between four defined regions in southern Germany. On January 9, 2019, TenneT was the first transmission system operator to announce that Uniper with the Irsching power plant had now been awarded the contract for the southern Bavaria region . As a result of this decision, it is unlikely that the project in Zolling will be pursued at this stage.
District heating
Freising existed since 1988 operated by the district heating Freising GmbH district heating system , whose needs are mainly covered by the power plant Zolling. Stadtwerke Freising and Bayernwerk AG are shareholders of the GmbH . The network extends over the municipalities of Freising, Zolling , Hallbergmoos and the airport. The following connections are supplied:
- Administration building of the Zolling power plant
- Zolling
- Freising
- TU Weihenstephan
- Freising East
- Texas Instruments
- Attaching
- Munich Airport
- Hallbergmoos
Generation capacities
The main producers in the supply network are the hard coal block with a maximum of 150 MW th and the biomass cogeneration plant with 30 MW th , which generate district heating via combined heat and power and can thus increase efficiency to up to 70%. In addition, a start-up boiler (40 MW th ) and an electric boiler ( 35 MW th ) are available on the power plant site, one of which takes over the district heating supply when the power plant units come to a standstill. In addition, heating plants in Weihenstephan (39.5 MW th ) and Hallbergmoos (32 MW th ) can be used to support high demand peaks . Munich Airport also operates its own block -type thermal power station and uses it to produce heat and electricity for its own use.
In addition, there is a district heating storage facility with a volume of 10,000 m³ and a storage capacity of 400 MWh on the power plant site .
Individual evidence
- ↑ http://engie-kraftwerke.de/de/content/kontaktinformationen
- ↑ http://www.engie-kraftwerke.de/de/content/chronik-kraftwerk-zolling
- ↑ Isar-Amperwerke AG (Ed.): Extension of the coal-fired power plant Leinigerwerk in Zolling - brief description . 1984.
- ↑ photo typo. Retrieved May 29, 2020 .
- ↑ Extract from the annual report. Retrieved February 18, 2020 .
- ↑ http://www.gdfsuez.com/en/news/press-releases/press-releases/?communique_id=1139 ( 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.
- ^ Hydrochloric acid accident at the Zolling power plant. In: https://www.merkur.de/ . July 21, 2010, accessed June 12, 2016 .
- ↑ Premium time-lapse films CONSTRUCTION TIMELAPSE. Retrieved November 16, 2018 .
- ↑ Flexible with volatile energy - ABB | Customer magazine . In: ABB | Customer magazine . October 10, 2016 ( abb-kundenmagazin.de [accessed November 16, 2018]).
- ↑ Fit for the future: At the Zolling power plant, this costs 80 million euros . In: https://www.merkur.de . May 19, 2011 ( merkur.de [accessed November 16, 2018]).
- ^ Freising public utilities company: Freising public utilities company - groundbreaking of the sewage sludge drying plant in Zolling. Retrieved November 16, 2018 .
- ↑ Engie puts an end: the Zollinger power plant is sold. April 26, 2019, accessed April 26, 2019 .
- ↑ YOUR WAY TO THE ZOLLING POWER PLANT. Retrieved January 22, 2020 .
- ↑ Katharina Aurich Zolling: Fit for the energy transition . In: sueddeutsche.de . June 28, 2017, ISSN 0174-4917 ( sueddeutsche.de [accessed March 4, 2019]).
- ↑ Energy company: Uniper is to build a gas power plant for electricity bottlenecks. Retrieved March 4, 2019 .
- ↑ Biomass power plant Zolling | ENGIE power plants - protecting the climate with biomass. Retrieved November 16, 2018 .
- ↑ Wayback Machine. September 12, 2014, accessed November 17, 2018 .
- ^ Freisinger Stadtwerke - Fernwärmeversorgung Freising GmbH. March 4, 2016. Retrieved November 17, 2018 .
literature
- Upper Bavaria under power. The history of the Zolling power station . Past Publishing 2008, ISBN 978-3-940621-01-6 .
