Research project:
Development and demonstration of advanced
SRF co-firing concept for high efficiency
fluidised bed CHP boilers, ADCOF
Contact person:
Pasi Vainikka
VTT
Koivurannantie1, PL 1603
40101 Jyväskylä
Puh. 020 722 2514
pasi.vainikka@vtt.fi
Key information
Research project, ADCOF
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Duration:
Budget:
TEKES funding:
1.5.2007-31.12.2008
920 000€
604 500 €
Background, objectives and approach
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BACKGROUND (1/2): Ash forming matter in waste fuels,
equally as in majority of biomass fuels, may result in heavy
furnace slagging and corrosion. This sets limitations for
increasing steam values and power-to-heat ratio at plants
using these types of fuels.
Figure. Strategic options for energy recovery from waste.
Background, objectives and approach
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BACKGROUND (2/2): The application of sulphur in preventing
chlorine induced corrosion and slagging was successfully
research in Climbus programme's research project 'CORRAWAY'
(2005-2006).
Pat.no.117631 "Menetelmä kloorin kerrostumisen estämiseksi
kattilan lämmönsiirtopinnoille"
Courtesy of M. Aho
Background, objectives and approach
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OBJECTIVE: To find and set quality criterion for ash forming
matter found in co-fired fuels that can be applied in e.g.
doubling the share recovered fuel at a plant with high powerto-heat-ratio (540°C 120bar).
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APPROACH: Property mapping for fuels is carried out,
including peat and coal. The combinations with lowest
tendency for ash melting/vaporisation are searched with
laboratory and pilot experiments. Selected effects are
demonstrated at full scale plant. Impact analysis and business
potential estimations for the concept are carried out in
selected EU member states.
Impact
Fuel prices (excluding taxes) when emission allowance price varies from 5 to 40 €/t
Demolition wood
SRF
Price
5
20
40
Peat
Pulp wood
Logging residue
Wood residues
Coal
Natural gas
Heavy fuel oil
0
5
10
15
20
25
€/MWh
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35
40
Lähde: M. Flyktman
If a 200MWth plant replaces 10% of its fuel supply with
recovered fuel…
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30
EUA 20€/tCO2
Recovered fuel replaces coal or peat
… the resulting saving in fuel costs is 1.3 M€/a
Main tasks
1. Speciation of ash forming matter in selected fuels
2. Measurement of 'evolution' during FB combustion
3. Manipulation of the chemistry in lab scale
4. Demonstration at full-scale plant
5. Feasibility assessment and estimations for impact
Deliverables
1. Scientific-wise:
l Speciation of selected elements in fuels.
l Establishment of knowledge their fate and conversion as a
function of residence time.
l Implications to fine particle forming matter.
2. Application-wise: Proof of concept with selected local fuels
(demonstration).
3. So what!?: Potential impact at selected member stated &
feasibility report. (M€/a, TWhe, Mt … )
Researcher exchange and co-operation
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RESEARCHER EXCHANGE:
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FZK (Forschungszentrum Karlsruhe GmbH), 2 months
Åbo Akademi, 6 months
INTERNATIONAL CO-OPERATION:
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VTT
VTT
Funding, 100k€, Network of Excellence in Bioenergy
State-of-the-art studies FZK & ECN (Holland)
Researcher exchange (above)
Co-publications
ACADEMIC DEGREES: The research will contribute to 3 PhD
theses.