Ravinteet kiertoon – vesistöt kuntoon | Kiertotalouden kärkihankkeen lähtölaukaus | Recycle nutrients for clear waters | Forum for Action 19.– 20.4.2016

1. DeBugger Project
Biomass CLS dryer, thermal conversion and P recycling
Ludwig Hermann, Robert Johansson, Tanja Schaaf, Alexandra Ferreira, Andreas Orth
Recycle nutrients, clear the waters - Forum for Action
Helsinki, 20.04.2016

2. © Outotec – All rights reserved
Agenda
Working for resource efficiency
• This is Outotec
• Motivation
• DeBugger Project
- Biomass CLS Dryer
- Biomass gasification
DeBugger - Biomass CLS Dryer, thermal conversion and P recycling2 April 2016
Zürich – the most efficient sludge conversion plant

3. © Outotec – All rights reserved
Local operations, global presence
Wide supplier network with established long-term relationships
April 2016 DeBugger - Biomass CLS Dryer, thermal conversion and P recycling3
R&D, sales
and service
centers in
32
countries
Deliveries to
more than
80
countries
Experts of
over
60
nationalities
Sales
1.2bn
EUR in 2015
Over
4,800
employees
Listed on Nasdaq Helsinki since 2006
Services
43 %
of sales
Environmental
goods and
services
90%
of orders
3rd
most
sustainable
company

4. © Outotec – All rights reserved
Extended scientific cooperation network
April 2016 DeBugger - Biomass CLS Dryer, thermal conversion and P recycling4

5. © Outotec – All rights reserved
Agenda
Working for resource efficiency
• This is Outotec
• Motivation
• DeBugger Project
- Biomass CLS Dryer
- Biomass gasification
DeBugger - Biomass CLS Dryer, thermal conversion and P recycling5 April 2016

6. © Outotec – All rights reserved
DeBugger - Biomass CLS Dryer, thermal conversion and P recycling6
Sustainable use, recovery and recycling of resources
SERVICES AND
SOLUTIONS
April 2016

7. © Outotec – All rights reserved
European water bodies affected by eutrophication
April 2016 DeBugger - Biomass CLS Dryer, thermal conversion and P recycling7

8. © Outotec – All rights reserved
We need to use nutrients where plants need them and not
where humans and animals excrete them!
April 2016 DeBugger - Biomass CLS Dryer, thermal conversion and P recycling8

9. © Outotec – All rights reserved
Agenda
Working for resource efficiency
• This is Outotec
• Motivation
• DeBugger Project
- Biomass CLS Dryer
- Biomass gasification
DeBugger - Biomass CLS Dryer, thermal conversion and P recycling9 April 2016

10. © Outotec – All rights reserved
DeBugger – closing the biomass process chain
April 2016 DeBugger - Biomass CLS Dryer, thermal conversion and P recycling10
Relevant renewable energy and secondary P-Flows in the EU28
Renewable energy yield (technical potential) of EU28 sludge and manure:
620 TWh (2,230,000 TJ) = 3 – 5% of total European energy supply

11. © Outotec – All rights reserved
Key to nutrient recovery and recycling – efficient drying
April 2016 DeBugger - Biomass CLS Dryer, thermal conversion and P recycling11
Large scale Closed
Loop Steam Dryer for
wooden bio-pellets
Storuman CHP, 32 MW,
Sweden
• 105,000 t/y bio-pellets
• 48 GWh/y electricity
• 40 GWh/y district heating

12. © Outotec – All rights reserved
Conventional dryer – basic principle
April 2016 DeBugger - Biomass CLS Dryer, thermal conversion and P recycling12
Energy consumption: 800-1200 kWh/t H2O
„Normal“ dryer
Wet material
Heat
Dried material
Water vapor
(moisture from material)

13. © Outotec – All rights reserved
Biomass CLS Dryer – basic principle
April 2016 DeBugger - Biomass CLS Dryer, thermal conversion and P recycling13
„CLS“ Dryer
Wet material
Heat
Steam 20 bar
Dried material
No water vapor,
No heat loss (evaporation)
Heat
Steam 5 bar
Water condensate
(moisture from material)
Energy consumption: 300-400 kWh/t H2O

14. © Outotec – All rights reserved
Pilot plant main data
April 2016 DeBugger - Biomass CLS Dryer, thermal conversion and P recycling14
Footprint 5 x 15 m
Height 30 m
Pipe diameter 300 mm
Boiler power 600 kW
Capacity 500 kg/h

15. © Outotec – All rights reserved
Advantages
• Highly energy efficient – low internal energy consumption
• Completely closed process – no gaseous emissions
• No need for gas cleaning stage – no odors
• Few mechanical components
• ATEX safe – steam environment
• Able to dry to high dry matter levels >90%
• Condensate can serve as a sink
April 2016 DeBugger - Biomass CLS Dryer, thermal conversion and P recycling15

16. © Outotec – All rights reserved
Agenda
Working for resource efficiency
• This is Outotec
• Motivation
• DeBugger Project
- Biomass CLS Dryer
- Biomass gasification
DeBugger - Biomass CLS Dryer, thermal conversion and P recycling16 April 2016
VergaserRegenerator
H2-reiches Gas
CO2-reiches Gas
L-ventil
Fließbettkühler
Tertiärluft
Sekundärluft
Siphon
Brennstoff
Dampf
Luft /O2+CO2
CaCO3& Koks
Source: IFK, University Stuttgart

17. © Outotec – All rights reserved
Twin FB Steam Gasification Process
Slurries tested as fuel for gasification
and downstream processing in bio-
refineries:
• Sewage sludge
• Cattle manure
• Pig manure
• Up to now in several test campaigns
sewage sludge, pig manure, cattle manure
and wood pellets (as reference fuel) were
gasified in the steam gasification process
• Temperature, steam-to-carbon ratio and
bed material were varied and assessed
April 2016 DeBugger - Biomass CLS Dryer, thermal conversion and P recycling17
air flue-gas
bed material
bed material
char
fuel
syngas
Gasification
T=750-850°C
Combustion
T=850 - 950°C
energy
steam
Source: Schweitzer, D., IFK, University Stuttgart

18. © Outotec – All rights reserved
Results of gasification tests
• At temperatures of 800°C the gas yield of sewage sludge is only slightly lower than gas yield
of wood pellets and the gas yield of manure is almost the same as wood pellets
• Syngas composition of sewage sludge and wood pellets is similar
• H2 concentration rises with increasing temperature, CO2, CH4 and CxHy concentration
decreases
April 2016 DeBugger - Biomass CLS Dryer, thermal conversion and P recycling18
0.4
0.6
0.8
1
1.2
700 750 800 850
gasyieldinm³STP/kgfuel,daf
temperature in °C
steam-to-carbon ratio: 1.5 molH2O/molC
sewage sludge wood pellets
0%
20%
40%
60%
80%
100%
wood pellets sewage sludge
gascompositioninvol-%dry,N2-free
steam-to-carbon ratio: 1.5 molH2O/molC
temperature: 810°C
CO2
CxHy
CH4
CO
H2
Source: Schweitzer, D., IFK, University Stuttgart

19. © Outotec – All rights reserved
Reference plant Rüdersdorf
Design data:
• Thermal capacity: 100MW
• Fuels: Carbonic ashes, RDF, sludge
• Product gas: 60 000 m³/h, 3-5.3MJ/m³,
860-920°C
• Ash: <1% carbon
Advantages:
• Independent of fuel ash composition and
no need of raw material feed adjustment
to meet product quality
• Wide fuel range (coal, biomass, RDF,
sewage sludge, carbonic ashes,....)
• Sewage sludge - Phosphor-recovery from
gasification ash possible
April 2016 DeBugger - Biomass CLS Dryer, thermal conversion and P recycling19
CFB Gasifier

20. Thank you for your attention
ludwig.hermann@outotec.com