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The Norwegian government's long-term Bioenergy Strategy aims for a doubling of bioenergy use by 2020, and through the negotiated agreement ("Klimaforliket") the Norwegian Parliament has allocated funds for renewable energy R&D, including the establishment of national research centres for environmentally friendly energy research (FMEs) in 2009. This project is integrated with the Bioenergy FME "CenBio" The Bioenergy Innovation Centre.

Norway's substantial efforts through ENOVA and the new Bioenergy Strategy requires a further development of small to medium scale heating plants and heat controlled CHP plants with emphasis on an optimum heat, steam and/or electricity production. These plants must be designed and operated in an optimum manner to achieve high overall efficiency. Cost-efficiency is possible if high availability and utilization factor can be attained, demanding stable operation.

This project will concentrate on improving stationary bioenergy by:

• Improving operating conditions for biomass heating plants by providing more stable conditions in the combustion chamber
• Optimisation of the overall plant process for increased efficiency and decreased emissions

Sub-Objectives

In addition to the main objectives presented at the front page, the following secondary objectives will be answered:

• Increased stable operating conditions
• Increased availability, reduced O&M costs and increased cost-efficiency
• Development and extensive testing of laboratory-scale torrefaction research setup
• Detailed studies on torrefaction of biomass and biomass residues and mixtures thereof for the production of improved fuels
• Testing of torrefied fuels, and mixtures thereof
• Identification of combinations of optimum fuels, and fuel mixtures thereof, technologies and combustion monitoring and process control strategies for improved stable operational conditions in biomass and biomass residues combustion plants
• Education
• Dissemination

Short facts about biofuels and combustion

The term biomass includes a range of different types like:

• Virgin wood
• Logging waste (GROT)
• Agriculture waste
• Demolition wood
• Forest residues
• Straw

Combustion challenges:

• Slagging
• Corrosion
• Fouling

The biofuel properties will influence:

• Fuel pre-treatment
• Fuel feeding
• Boiler
• Combustion chamber
• Flue gas cleaning
• Handling of rest products

Improved biofuel quality means:

• Reduced fuel costs
• Advantages concerning combustion stability
• Environmental advantages
• Operational advantages
• Combustion technology can be designed for a uniform fuel feed