Download Leudelange - EEW Energy from Waste

Leudelange
02 | 03
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.
Taking control of waste disposal
The waste business in Luxemburg is controlled by the three
waste syndicates, Sidec, Sigre and Sidor. While Sidec and
Sigre have a mechanical biological treatment plant and a
landfill area, 70 percent of all waste in the Grand Duchy
is disposed of in environmentally friendly fashion in the
thermal waste recycling plant belonging to Sidor. This provides certainty of disposal for household and commercial
waste from the town of Luxemburg as well as a further 34
boroughs. In addition the three syndicates are planning to
work more closely together from 2015 in order to recycle
and dispose of further thousands of tons of waste in the
best possible fashion.
In Leudelange, to the south of the town of Luxemburg, Sidor
also owns the highly modern waste recycling plant which
was planned and built by EEW. EEW Leudelange has been
operating this plant since 2010 and produces electrical
power from 150,000 tons of waste.
04 | 05
Everything at a glance
k
11
3
6
7
9
10
1
2
8
4
1 Waste Bunker
2 Incineration Grates
3Furnace
4 Slag Bunker
5 Steam Turbine/Generator
6 Turbo Reactor
7 Bag Filter
8 Induced Draft Fan
9 Catalytic Converters
10 Emission Measurements
11Chimney
5
Ergänzende Daten
Put into operation
2010
Total investments
100 million euros
Capacity
150,000 tons
No. of incineration lines
1
Waste storage volume
13,000 cubic metres ≈ 7,500 tons
Heat Range for the Waste
8-14 megajoules/kilogram
Combustion Temperature
> 850 °C
Power production
135,000 megawatt hours
≈ 35,000 households
06 | 07
Residual waste turns into energy
Several thousand tons of waste are brought to the plant
every week where it is collected and put into interim
storage in the waste bunker. Up to 7,500 tons of waste can
be stored in the bunker. This corresponds to the loads of
around 1,500 garbage vehicles This ensures that operation
is continuous even at the weekend or on official holidays.
An employee of the plant regularly stirs the waste with the
help of a crane claw to create a homogeneous mix. This
is necessary since the waste comes from a wide variety of
sources and therefore has a varied energy content. Only a
consistent mix of waste can be burned on the grate without
problems.
The line can incinerate waste with an average calorific value
of 10,500 kilojoules per kilogram. The crane claw can move
up to three tons of waste.
To ensure that no smells can escape into the air a slight underpressure is maintained in the bunker. This is created by
suctioning air from the bunker for purposes of combustion.
The prepared waste is transferred from the bunker via the
feeding hopper to the incineration grates for the lines. Once
ignited the waste material automatically continues to burn.
The fire has a temperature of more than 850 °C. With this
heat energy around 77 tons of steam per hour are produced
in the boiler. With a pressure of 40 bar and a temperature of
400 °C this steam drives a turbine connected to a generator.
In this way the plant produces up to 135,000 megawatt
hours of electrical power per year which is then fed into the
public grid.
The operation of the thermal waste recycling plant represents an alternative to an annual energy production based
on the use of nearly 53 million litres of heating oil.
08 | 09
Environment protection
right from the start
No chance for pollutants
Environmental protection is already applied at the furnaceburning stage. The creation of dioxin and furans in the
combustion chamber is reduced by keeping the temperature at 850 °C. At the same time the levels of carbon
monoxide and nitrogen oxide are reduced.
Ammonia water is injected into the flue gas finely
distributed in order to split the nitrogen oxides in the
catalytic converter into environmentally neutral nitrogen
and water. The cleansed flue gas then leaves the 82 metre
high chimney.
With a temperature of 200 °C the flue gases leave the
furnace and then undergo several further stages of fluegas cleansing during which other pollutants are reduced
to a minimum.
What remains is slag, flue ash and filtration dust. The slag
is recovered and is used for roads and civil engineering
projects. The flue ashes and filtration dust, by contrast, are
removed and used as backfilling material.
The flue gases first reach the turbo reactor. There sodium
bicarbonate is sprayed into the flue gas in order to bind
chlorine and sulphur compounds. At the same time further
dioxins and furans are bound by adding hearth furnace
coke. Solids are formed which are deposited together with
dust particles on the hoses of the downstream bag filter.
There they form an absorbent layer.
The Leudelange location produces no waste water. Dirty
water is recovered and reused in the flue gas cleansing
process. In addition rainwater is collected and used as
service water in the plant.
The deposits are removed at regular intervals by means of
jets of compressed air.
10 | 11
Strict specifications
Our Environmental Contribution
Thermal waste recycling is currently the most
environment-friendly form of waste disposal.
150,000 tons of waste per year
disposed of cleanly
By using waste as fuel, emissions of carbon dioxide are
reduced in the EEW Leudelange plant alone by some
23,000 tons a year - as compared to power production in
conventional brown coal-fired power plants.
The emissions levels laid down in Luxemburg‘s Règlement
grand-ducal dated December 19, 2002 are easily met in
Leudelange.
135,000 megawatt hours
of power production per year
Power for
35,000 households
23,000 tons
of CO2 save
Emission Data for EEW plant
100
80
60
40
20
1
Operating Values for Leudelange
In accordance with the Luxemburg‘s Règlement grand-ducal
ra
fu
et
di
ox
in
s/
m
vy
ea
Utilization value in percent
Limit Values 1 ns
s
al
m
r
liu
al
/th
m
ta
iu
to
dm
lh
st
sil
ve
ick
du
ca
or
qu
id
ga
e
co nic
m ca
po rb
un on
ds
e
or
hy
dr
og
en
flu
lo
xid
hy
dr
og
en
ch
io
rd
hu
lp
su
rid
e
e
id
ox
on
m
on
rb
ca
ni
t ro
ge
n
ox
id
es
0
163
Rue de la Gare
Rue
e
de C
ge
s s an
179
Rue
a
deL
voir
4
urg
mbo
uxe
de L
Rue
163
4
'E
ed
Ru
4
A4
h
sc
169
Route
e
de B
A4
163
We hope that this flyer has made you curious to find out
more. You are welcome to visit our plant. Please contact
us under:
EEW Energy from Waste Leudelange S.à r.l.
Route de Bettemburg
3346 Leudelange
Luxemburg
T +352 37 85 41-1
F +352 37 86 89
[email protected]
www.eew-energyfromwaste.com
Our corporate design
has won an award.
04/2014
bourg
ttem
EEW