Schwedt
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Energetic
Waste is a valuable source of energy. The energy
from waste has been recycled in the plants of the
EEW-Energy-from-Waste Group (EEW) for more than
40 years now and used to generate environmentally
friendly power, district heating and process steam.
At the same time thermal waste recycling is a supporting
pillar of a modern, sustainable waste-disposal economy.
EEW guarantees this to its partners and customers.
For this reason EEW develops, constructs and runs wasteincineration plants of a high technical and ecological
standard and thereby makes an important contribution to
the environment and to climate protection.
In the lower Oder valley
The lower Oder valley which was declared a nature reserve
in 2006 stretches out before the gates of the town. The
landscape is characterized by natural floodplain forests,
stretches of water and extensive banks of reeds. Great
importance is attached to environmental protection and the
enjoyment of nature in the region.
At the same time Schwedt is the economic centre of the
Uckermark region. Mineral oil processing and paper production
have formed the industrial cornerstones of Schwedt‘s economy
for over 60 years. With four paper factories Schwedt is one
of the largest paper producing locations in Germany. Paper
production requires large amounts of energy. This requirement
led to collaboration between the paper manufacturer, LEIPA
Georg Leinfelder GmbH (LEIPA) and EEW for the construction
and operation of a replacement fuel power plant. To this end
the company Kraftwerk Schwedt GmbH & Co. KG (KSC) was set
up to implement the project.
The plant situated on the LEIPA site has been in operation since
2010 and every year it recycles 300,000 tons of replacement
fuels.
Replacement fuels are a specially recycled form of commercial
and industrial waste which have a significantly higher heat
range than traditional household waste.
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Everything at a glance
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1 Delivery of Replacement Fuels
2 Intermediate Product Bunker
3Reprocessing
4 Finished Product Bunker
5 Tubular Belt Conveyor
6 Replacement Fuel Silo
7 Combustion Chamber
8Cyclone
9 Afterburner Chamber
10 Fluidized Bed Cooler
11 Waste Heat Boiler
12 Flue Ash Silo
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13 Hot Gas Cyclone
14Economiser
15 Process Steam
16Turbine
17Generator
18Condenser
19Transformer
20 Turbo Reactor
21 Bag Filter
22 Induced Draft Fan
23 Emission Measurements
24Chimney
Supplementary Data
Commissioning
Fluidized bed combustion
2010
Investment
160 million euros
Capacity
300,000 tons/year
No. of incineration lines
1
Waste storage volume
17,000 cubic metres ≈ 7,000 tons
Heat Range for the Waste
8.0-25 megajoules/kilogram
Combustion Temperature
> 850 °C
Power production
140,000 megawatt hours
≈ 40,000 households
Steam production
700,000 megawatt hours
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Residual waste turns into energy
The rejects and residual fibres which occur in paper
production are brought to the power plant. In addition other
partners deliver several thousand tons of replacement fuels
every week in order to guarantee that the plant works to
capacity. The fuels are stored in a raw product bunker and
prepared for further processing.
The fuel is shredded into small particles in a reprocessing
system and then strained. In the process all ferrous and
non-ferrous metals are removed. In this way a fine fuel mix
is created. Then the fuel is transferred to the finished product
bunker. There an employee of the plant stirs the material
with the help of a crane claw to create a homogeneous
mix. This is a basic requirement for even incineration. The
different components in replacement fuels have different
calorific values. The line can incinerate fuels with an average
value of 8,000 to 25,000 kilojoules per kilogram. The fuel is
transferred through pipes from the finished product bunker
to the two replacement fuel silos.
The air required for the incineration process is sucked from
the bunker and blown into the boiler. As a result there is a
slight but constant underpressure in both bunkers which
prevents odours from escaping.
The prepared fuel is blown from the replacement fuel
silos into the circulating fluidized bed firing system. Once
ignited there, the replacement fuel automatically continues
to burn. The fire has a temperature of over 850 °C. This
heat energy is used to produce high-pressure steam in a
water-steam cycle. In this way around 155 tons of steam
are produced every hour at a temperature of 470 °C and 70
bar. The steam drives a turbine with connected generator.
Electricity is now produced in a cogeneration process and at
the same time process steam is removed for LEIPA‘s paper
production.
In this way the facility produces around 140,000 megawatt
hours of electricity every year and 700,000 megawatt hours
of process steam.
The operation of the thermal waste recycling plant
represents an alternative to an annual energy production
based on the use of nearly 90 million litres of heating oil.
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Environment protection
right from the start
Environmental protection starts in the combustion
chamber of the fluidized bed incinerator. The pollutants
contained in the replacement fuels have to be completely
destroyed. High temperatures of over 850 °C ensure the
destruction of dioxins and furans. Carbamide is injected in
the afterburner chamber in order to convert the nitrogen
oxides present into environmentally neutral nitrogen and
water.
From there the flue gases pass through the waste heat
boiler and the economiser into the subsequent flue gas
cleansing process during which other pollutants are
reduced to a minimum.
Hydrated lime and hearth furnace coke is added in the
turbo reactor. These bind further pollutants such as
hydrogen chloride and heavy metals. The solids created
are deposited on the hoses of the bag filter together with
flue ash and there they form an absorbent layer. The
deposits are removed at regular intervals by means of
jets of compressed air and disposed of as filtration dust.
No chance for pollutants
Then the flue gas leaves the 100 metre high chimney with
the aid of suction extraction.
What remains is bed ash, flue ash and filtration dust. The
bed ash is recovered and is used for roads and in the
construction of waste dumps. The flue ashes and filtration
dust, by contrast, are removed and are stowed in mines.
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Strict specifications
Our Environmental Contribution
Thermal waste recycling is currently the most
environment-friendly form of waste disposal.
300,000 tons of waste
per year disposed of cleanly
By using replacement fuels as fuel, emissions of carbon
dioxide are reduced in the Schwedt power plant alone by
some 125,000 tons a year - as compared to power
production in conventional brown coal-fired power plants.
At the same time KSC guarantees that the emissions levels
specified in the legislation contained in the 17th
„Bundesemissionsschutzverordnung“ [Federal Emission
Control Ordinance] are met.
140,000 megawatt hours
of power production per year
Power for
40,000 households
700,000 megawatt hours
of process steam per year
Emission Data for EEW plant
125,000 tons
of CO2 saved
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Utilization value in percent
Limit Values 1 Operating Values Schwedt
In accordance with the 17th “Bundesimmissionsschutzverordnung” (Federal Emission
Control Ordinance) 2 Operating values are below the detection limit
1
A2
B166
A2
B166
A2
Schwedt/
Oder
04/2014
B166
We hope that this flyer has made you curious to find out
more. If you are interested in visiting the power plant,
please contact us under:
Kraftwerk Schwedt GmbH & Co. KG
Kuhheide 34
16303 Schwedt
T +49 33 32 58 14-1 20
F +49 33 32 58 14-2 50
[email protected]
www.eew-energyfromwaste.com
Our corporate design
has won an award.