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Ibbenbüren power plant

Hard-coal-fired power plant

Facts and figures

Power plant location Ibbenbüren, North Rhine-Westphalia
Power plant type Hard-coal-fired power plant
Commissioned in 19 June 1985
Electrical output (gross) 838 MW
Electrical output (net) 794 MW

The biggest slag tap boiler of its type worldwide

The 838-MW hard-coal-fired unit generated electricity for the first time on 19 June 1985. For the production of electricity, high-volatile anthracite coal mined in the neighbouring pit requires a slag tap furnace. The Ibbenbüren slag tap boiler is the biggest of its type worldwide. In addition to the primary fuel – Ibbenbüren anthracite coal – fuel oil is used as igniting fuel, fluidised bed lignite as support fuel, and meat and bone meal as well as sewage sludge as substitute fuels.

Dust becomes construction material

The extensive plants for flue gas scrubbing consist of electrostatic filters for dedusting, the desulphurisation plant and an NOx reduction system. In the electrostatic filters, ash particles are separated from the flue gases, returned as fly ash to the slag tap furnace and melted. The resulting granules are used as construction material.

Gypsum for the construction material industry

The sulphur dioxide emerging in the combustion of coal is removed from the flue gases in the desulphurisation plant with lime slurry and used as gypsum in the construction material industry. NOx reduction works according to the process of selective catalytic reduction. The nitrogen oxides contained in the flue gas are converted with ammonia (NH3) and a catalyst into gaseous nitrogen and water vapour. 

All flue-gas scrubbing plants are designed and operated in such a way that emissions comply with or are below the legal limits.

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