WP3: Integrated hydrogen
production and use at pulp mills
Katja Kuparinen, LUT
Final energy consumption in pulp and paper industry
2011
Coal
23 %
27 %
Oil
Natural gas
6%
Electricity
16 %
28 %
Biomass, waste
and other
renewables
Final energy consumption globally 6611 PJ, of which fossil fuels 45%
(IEA, Energy Technology Perspectives 2014)
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Katja Kuparinen
Electrolysis for hydrogen and oxygen production
• Alkaline electrolysis
Currently available technology
Water similar to boiler water
Efficiency around 72% (LVH)
Electricity consumption 4.5 kWh/Nm3 (hydrogen)
• High temperature electrolysis (>800°C)
Under R&D by Sunfire GmbH
SOEC (solid oxide electrolysis cell)
Electricity consumption 3kWh/Nm3 (hydrogen)
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Katja Kuparinen
Integration of electrolysis in pulp mill process
• Hydrogen use in process as fuel
•
Possibility to refine further, e.g. methanation
• Oxygen use on-site for delignification and bleaching
•
Also value as sellable product
• Synergies and problems with existing applications
• Possibilities for following processes
Methanation
Sellable products
• Profitability
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Katja Kuparinen
Fossil fuel free pulp mill by fossil fuel replacement in
lime kiln
• Substitutes for lime kiln fuels
•
•
•
•
•
Hydrogen
Methane
Gas from biomass gasification
Torrefied biomass
Direct biomass firing
• Evaluation of technical feasibility
• Mass and energy balance calculations
• Profitability calculations for each case
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10.2.2016
Katja Kuparinen
Bio-product mill
Pulp or
paper
Energy
Power plant
Pulp and paper mill
Energy
Steam/water
O2 CO2
H2 CH4
Biomass
handling
Electrolysis
and methanation
Biomass
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Katja Kuparinen
Products
Fuels,
chemicals,
other
Research plan for 2015
• Article ”Fossil fuel free pulp mill” by 2/2015
• Poster ”Advanced concepts for integrated SNG production at pulp mills” accepted to be
presented at REGATEC 2015 conference in May
• Bio-product mill research
•
Article to be submitted later
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Katja Kuparinen
NEO-CARBON ENERGY project is one of the Tekes’ strategic research openings.
The project is carried out in cooperation between VTT, Lappeenranta University of Technology and
University of Turku / Futures Research Centre.