Small Decentralised Thermal Power Stations For
Refuse-Derived Fuel (RDF)
Author(s)
C. Bülow
Abstract
We discuss a solution to bringing down energy costs and to making a
contribution to climate protection.
Small decentralised thermal power stations for RDF with a thermal capacity
of 35 MW have some advantages in comparison to large plants. The required
amount of RDF (approx. 70,000 t/a) is mostly locally available, which reduces
the transport costs considerably. The produced electrical energy (up to 8 MW)
and the waste heat from the thermal power station can be used in an industrial
plant.
An industrial plant and a refuse company founded a joint venture and built a
thermal power station for RDF in Bremen. They replaced the old coal fired
power station with a RDF-plant. Increasing energy costs are replaced by revenue
for RDF. The industrial plant is now using the \“cheap” energy from the RDF.
The refuse company has a reliable customer and stable prices for its waste for
long years: a typical win-win situation. After a 3-year operating time the
experiences of the RDF thermal power station are positive without exception.
The specified emissions are far below the limits.
Furthermore, due to the fact that RDF contains a high proportion of biomass
(approx. 45%) by changing the fuel from coal to RDF, a contribution to climate
protection can be made. If the same amount of biogene content would be land
filled, a large amount of methane, which is one of the more dangerous
greenhouse gases, would be produced.
The RDF thermal power station is built up modularly. The individual
components are standardized so that the plant can be built fast and costeffectively.
The specific investment costs per ton of RDF are comparable to large
plants (>100 MW). Due to the handling of RDF in a closed hall, there is no smell
outside the plant. The RDF is burnt at over 870° degrees Celsius to eliminate all
pollutants completely. The steam is led through a back-pressure turbine and then
used in the industrial plant.
The modern flue gas treatment plant shows the expected consumption of
additives. Since the initiation, the emission limits are constantly considerably
below the requested limits of the EU-DIRECTIVE 2000/76/EC.
Keywords
Related Book
Other papers in this volume
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