Castrop-Rauxel power plant
| Castrop-Rauxel power plant | |||
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| location | |||
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| Coordinates | 51 ° 34 '50 " N , 7 ° 18' 49" E | ||
| Data | |||
| Type | Steam power plant | ||
| Primary energy | Fossil energy | ||
| power | 295 | ||
| operator | last: E.ON | ||
| Start of operations | 1958 | ||
| Shutdown | 2001 | ||
| boiler | Benson melting chamber | ||
| Chimney height | Block 2: 230 m | ||
| Energy fed in since commissioning | 31,059.3 GWh | ||
The Rauxel power plant was a hard coal power plant in Castrop-Rauxel . It was located directly on federal highway 235 and was dismantled between 2006 and 2008. Housing should be built on the area.
history
The Rauxel power plant was opened in 1958 after a construction period of 5-1⁄4 years. It was built to meet the high energy requirements of the Klöckner collieries in the Ruhr area and to burn the non-marketable coal from the Victor 3/4 colliery .
On September 30, 1958, Block 1 delivered the first electricity to the VEW network. With a unit size of 120 MW, it was the largest and at that time the most modern block power plant based on hard coal in Germany . At peak times, the power plant with its two units had an output of 295 MW . The boiler consisted of a Benson melting chamber double boiler with two equal half-load units. The steam generated had a pressure of 180 atü and a temperature of 527 ° C when it entered the turbine .
Most of the energy generated by Unit 1 was conducted via a 220 kV overhead line to the Pöppinghausen substation 3.5 km away. A 30 kV connection led to the Zeche Victor 3/4, a 6 kV connection served the power plant's own electricity requirements.
A new colliery transfer station was built to the south-east facing the federal railway. This served the Rauxel power plant, the Victor 3/4 colliery, Ickern 1/2 and the fertilizer plant BASF union Victor, Ickern. A siding led from the colliery station to the power plant, a branch from it as an assembly track through the machine house and turbine hall. A turntable outside the machine house allowed transformers to be transported over this track.
The central stage of Block 1 was located at a height of nine meters. This allowed uncomplicated routes from the boiler house to the machine house and control room, and there was also a closed bridge to the neighboring administration and workshop buildings.
Out of consideration for the available space, the nacelle was constructed in a longitudinal arrangement for the turbine / generator. It was equipped with a 200 t overhead crane from MAN for maintenance, transport and inspection work ; this had a 20 t auxiliary lift right next to the 200 t main hook for smaller jobs. The turbines and generators of both blocks were supplied by Siemens-Schuckertwerke and painted in a striking orange.
The boiler house of block 1 was 41.5 m high, the chimney of block 1 built on it was 120 m high; it was dismantled during the lifetime of the power plant.
Unit 1 had an average coal consumption of around 750 t of hard coal (37 freight wagons) per day. As a by-product, 180 t of boiler ash (granulate) per day (9 freight wagons) were produced.
The control center was located between the machine house and the boiler house and was equipped with a large plexiglass ceiling for lighting and an air conditioning system for a constant temperature. These facilities were very modern in 1958. Under the control room there was a cable floor in which the cables were laid on newly developed, hot-dip galvanized holders. A total of 120 km of cables were laid in the first block.
The power plant design provided space for four identical blocks; However, only one more structurally modified block was added:
The dimensions of Block 2 with its chimney were technical record marks. The 87 m high natural draft cooling tower with a wall thickness of only 14 cm was one of the largest in the world. The 230 meter high chimney , which was built in just 55 days, was christened “Germany's highest smoker” by the press. The boiler for the 175 MW unit 2 was also a Benson melting chamber double boiler with reheating and equipped with two cyclone combustion chambers, which in turn were the largest in the world at the time. Its live steam parameters were 535 ° C at 186 bar. Unit 2 began operating on September 6, 1967.
On June 19, 1984, VKR had declared a remaining use of 10,000 hours for Block 1 and 30,000 hours for Block 2 in accordance with Section 20 of the 13th BImSchV. Since the power plant was to be operated beyond this period, the permit for the unrestricted continued operation of the firing systems of the power plant as well as the permit for the construction and operation of the exhaust gas cleaning systems was applied for. Unit 2 was finally retrofitted in 1993/1994 with a flue gas denitrification system ( Denox system ) and a flue gas desulfurization system (FGD).
When a power purchase contract expired, Unit 1 had to be shut down. Its operating time ended on April 27, 1990 with 167,366 operating hours and a total generation of 9,443,148 MWh. Unit 2 finally went offline on June 15, 2001 after 190,532 operating hours and 21,614,159 MWh.
The Klöckner company sold the Rauxel power plant on October 1, 1982 to VEBA Kraftwerke Ruhr AG, which belonged to PreussenElektra from September 1998 and was merged into today's E.ON AG on June 16, 2001 . The power plant was assigned to the West 2 power plant group and shut down on June 15, 2001. In the last few years of operation, the power plant was co-managed by the neighboring Knepper power plant in Dortmund and operated in personal union.
Although the power plant was one of the smaller hard coal power plants by today's standards, it was one of the pioneer power plants in view of the records that were set.
After the cooling tower had been blown up on November 5, 2006, the chimney built in 1966 was blown up on the morning of April 6, 2008.
Technical specifications
| Data | Block 1 | Block 2 |
|---|---|---|
| Coaling plant | Railway unloading via underground bunker coal storage area with stacker and scraper | |
| Combustion system | Block 1 | Block 2 |
| design type | Cyclone firing with direct injection and liquid ash removal | |
| Combustion heat output | 2 × 159.5 MW | 455 MW |
| fuel | Hard coal | Hard coal |
| commitment | 2 × 29.4 t / h | 83.86 t / h |
| lower calorific value | 19.53 MJ / kg | 19.53 MJ / kg |
| DeNOx system | Block 1 | Block 2 |
| design type | Selective catalytic reduction | |
| Reducing agent | ammonia | ammonia |
| Number of DeNOx systems | 2 (only planned) | 1 |
| Electric dust extractors | Block 1 | Block 2 |
| design type | Electric horizontal filter reduction | |
| Number of dust extractors | 2 | 2 |
| Raw gas dust content | 19000 mg / m 3 | 7000 mg / m 3 |
| Clean gas dust content | <375 mg / m 3 | <125 mg / m 3 |
| Flue gas desulfurization system | Block 1 | Block 2 |
| design type | Wet scrubber with final product gypsum | |
| Number of washers | 2 (only planned) | 1 |
| Sulfur dioxide - raw gas concentration | - | 4835 mg / m 3 |
| Sulfur dioxide - clean gas concentration | - | <400 mg / m 3 |
| Clean gas dust content | - | <50 mg / m 3 |
| Steam generator | Block 1 | Block 2 |
| design type | 3-pass Benson boiler with intermediate overhang. | 2-pass Benson boiler with intermediate overhang. |
| Number of steam generators | 2 | 1 |
| highest live steam continuous output | 2 × 200 t / h | 558 t / h |
| Approval pressure | 260 bar | 260 bar |
| Superheated steam temperature | 527 ° C | 535 ° C |
| Turbine system | Block 1 | Block 2 |
| design type | 3-casing axial condensation turbine, LP part double-flow | |
| power | 120 MW | 175 MW |
| District heating heat exchanger | Block 1 | Block 2 |
| design type | steam-heated surface heat exchangers | |
| power | a total of 40 MW | |
| Condenser system | Block 1 | Block 2 |
| design type | Surface capacitor | |
| Cooling water volume | 13700 m 3 / h | 16,000 m 3 / h |
| Cooling tower system | Block 1 | Block 2 |
| design type | Fan cooling tower | Countercurrent natural draft cooling tower |
| Number of cooling towers | 2 | 1 |
| Cooling water flow rate | 2 × 7150 m 3 / h | 19,000 m 3 / h |
| generator | Block 1 | Block 2 |
| Apparent power | 160 MVA | 233 MVA |
| Real power | 120 MW | 175 MW |
Copy of the technical data from a brief description of the VKR of the Rauxel power plant from June 30, 1986. The letter was an attachment to the application for unrestricted continued operation and retrofitting in accordance with the 13th BImSchV.
Data cooling tower
The cooling tower consisted of a hyperbolic chimney shell made of reinforced concrete with an upper and lower ring anchor.
Further data:
| Cooling tower | |
|---|---|
| Cooling tower shell | at a height of 8.55 m on 48 reinforced concrete columns |
| height | 86 m (from GOK) |
| diameter | largest diameter 63.6 m |
| diameter | smallest diameter 37.78 m |
| Weight | about 4,800 tons |
literature
- Tilo Cramm: Mining is not one man's thing. ISBN 3-88474-928-5 .
- Adolf von Brackel, Hubert Emonts: The Klöckner power plant Castrop-Rauxel. Reprint from the Siemens magazine. 33rd year, September 1959, issue 9, pages 542–556 (Siemens-Schuckert Aktiengesellschaft).
