1. Waste incineration plants
E.ON Energy from waste
EEW Hannover GmbH

2. Waste incineration plants in Germany
and in the Netherlands and Luxenburg

3. Facts about the waste incineration plants
tons per year
Only household waste and household similar industrial waste
No dangerous waste
You get energy for households

4. The principle 7 boiler 8 turbine 9 generator 10 condenser
11 transformer
12 spray absorber
13 absorber
14 fabric filter
15 induced draft fan
16 emission measurement
17 chimney
1 delivery
2 bunker
3 (pusher) grade
4 slag remover
5 cinder bunker
6 ammonia water

5. Delivery and bunker The waste is offloaded from trucks
The waste is in the bunker
A cran transports the waste into the boiler

6. Standpoint

7. Boiler and grade In the boiler the waste is spreaded by grades
The fire temperature must be everytime over 870°C

8. Slag remover and cinder bunker
The residue of the burned waste (slag) is transferred into the slag remover
Now the slag is cooled down
The cold slag is brought into the cinder bunker
The slag will be transported to another company
Iron, non ferric metals and not burned material is taken out
The neutral slag is used for street building

9. Standpoint

10. But the smoke would damage the
nature, wouldn‘t it ?!?

11. No, because there is a cleaning principle!

12. First step: NH OH + NOx are getting to H O + N
Neutralisation of nitrogen oxides by spraying
25% ammonia water.
ammonia water
nitrogen oxides
NH OH NOx
are getting to
H O N 4
water
atmospheric nitrogen 2 2

13. Second step (spray absorber):
By atomisation of quick lime follows various reactions:
quick lime
Ca(OH) Ca(OH) Ca(OH)2
SO HCl HF
H2O + CaSO H2O + CaCl H2O + CaF2
sulphur oxid
hydrochloric acid
hydrofluoric acid
water
calcium sulfite
water
calcium chloride
water
calcium fluorid

14. Third step (absorber):
Addition to spray absorber:
Gaseous heavy metals and dioxines were bound on carbon.
For reaching that, lime and activated carbon is sprayed against the cours of the smoke:
heavy metal
doxines
attaches to
attaches to
activated carbon

15. Forth step (fabric filter):
The solid components in the smoke get drained out by the filter membrane
Regular the solid components get cleaned from the filters by compressed air
The shaken off components are getting into a residue silo and after some time they get into an underground depot

16. The leaving Emission measurement
The clean gas leaves the Waste incineration plants threw the chimney
The induced draft fan supports the escape of the clean gas

17. Water circulation and steam circuit
How to get energy by burning waste…

18. … see where it is

19. The principle Inside the boiler are pipes in wich water is flowing
The water is vaporized because of the heat in the boiler
The steam rises because of the big pressure
The steam powers the rator of the turbine
The generator produces electricity from the rator energy
The transformer plant leads the electricity into
The condenser cools the water down to 60°C
The circulation begins again
the electricity grid

20. The end
Made by Jolanda & Joana