The power plant in Datteln
Since 1964, there has been a traction power generation station consisting of three blocks with an electric power of 303 MW in Datteln. Since May 2007, Wayss & Freytag Ingenieurbau AG is constructing a new power station for E.ON Kraftwerke GmbH, Gelsenkirchen, which will replace the old station and in which the district heat power will be 2,550 MW and the electric net power 1,054 MW. The plant, which is currently under construction, consists of the following main components: a power-house with steam turbine, switchboard plants, a boiler house with a steam generator, electrostatic filter, flue gas desulfurization system (FGD plant) and a cooling tower as well as various service buildings. Deadline for completion is April 1, 2010.
With the construction of the 178 m high hyperbolic cooling tower, an old tradition of W&F is continued. In the air intake area the hyperbole shells, which were placed on top of each other to generate a natural draft, are placed on 36 radial supports, which in turn transfer the loads from their own weight and the wind to a ring foundation. The shell thicknesses were optimized following stability and resonance frequency calculations; they were mainly 26 cm, increasing to 1.00 m at the bottom and decreasing to 19 cm at the cooling tower head. Cleaned exhaust gases are also emissioned through the cooling tower. Because of residual contents of sulphur oxide and nitrogen oxide, the shells must be built of a concrete with a higher resistance to acids.
Further details:
- 113.5 m inner diameter of the cooling tower foot
- 71.0 m inner diameter at the waist (middle)
- 74.0 m inner diameter at the head
- 122.0 m diameter of the ring foundation