Clean and flexible use of new difficult biomass fuels in small to medium-scale combustion (BIOFLEX!)

An expansion of the fuel range in the small to medium scale combustion sector to include also residues from forest and agriculture industries could on long term contribute with up to 100 TWh/a within EU. A substantial part of this could come from Sweden. But if this type of fuels should directly be used in today’s small-to-medium scale furnaces, the effect would most probably be significant operational problems and unacceptably high emission levels. Such would be e.g. ash slagging and corrosive deposits beside high levels of both gaseous and particulate emissions. Therefore, the objective of this project is to increase the fuel flexibility and innovation potential of the use of difficult solid biomass fuels in small to medium scale combustion.

The Swedish contribution will be research actions on ash transformation and fixed-bed combustion, which are expected to contribute to new fuel design concepts and other innovative technology solutions.


Henrik Ström (contact)

Forskarassistent at Applied Mechanics, Fluid Dynamics



Reinbek, Germany


Graz, Austria

BTI - Office of Technology and Engineering Jan Gumkowski

Poznan, Poland

Institute of Power Engineering (IEn)

Warszawa, Poland

KWB Kraft und Wärme aus Biomasse GmbH

St.Margarethen, Austria

Luleå University of Technology

Luleå, Sweden

Opcon AB

Stockholm, Sweden

POLYTECHNIK Luft- und Feuerungstechnik GmbH

Weissenbach, Austria

SP Technical Research Institute of Sweden

Boras, Sweden

Technology and Support Centre of Renewable Raw Materials (TFZ)

Straubing, Germany

Umeå University

Umeå, Sweden


Swedish Energy Agency

Funding years 2016–2019

Related Areas of Advance and Infrastructure


Area of Advance

Sustainable Development

Chalmers Driving Force

C3SE/SNIC (Chalmers Centre for Computational Science and Engineering)

Chalmers Research Infrastructure

Basic Sciences

Chalmers Roots

More information

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