New technology for renewable energy generation: ANDRITZ starts up pilot plant for biomass torrefaction in Frohnleiten, Austria

International technology Group ANDRITZ and the municipality of Frohnleiten, Austria, have officially started up a pilot plant for treatment of biomass. The plant is based on the ACB (Accelerated Carbonized Biomass) process newly developed by ANDRITZ SEPARATION and uses torrefaction to generate high-grade fuel from biomass for use in power plants.

Torrefaction is a thermal process for raising the energy density of biomass, which in turn increases its calorific value. Woody biomass, like wood chips or sawmill chips, is compacted and upgraded at the premises of Frohnleiten waste treatment plant using the innovative ANDRITZ torrefaction technology. This improves the fuel properties of the biomass, thus less fossil fuel is needed in power plants by co-firing with CO2-neutral biomass. In future, other low-cost biomass raw and waste materials are also to be upgraded in turnkey torrefaction plants (with a capacity of around 50,000 t/a) to become particularly energy-rich fuels.

The ANDRITZ GROUP generates more than half of its sales from systems, machines, and processes that can produce clean energy from renewable energy resources, like biomass or hydropower. ANDRITZ Executive Board member Humbert Köfler adds: “The new ACB technology, which enables co-firing with fossil fuels, is a further contribution by our company towards protecting the environment and enhancing energy efficiency.”

The ACB research and development project, involving Polytechnik Luft- und Feuerungstechnik and Wild & Partner in addition to ANDRITZ, is funded by resources from the Austrian government’s Climate and Energy Fund as part of the “New Energies 2020” project and supported by the Austrian Research Institute ÖFI. Further information is available at:

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For further information, please contact:
Oliver Pokorny
Group Treasury, Corporate Communications & Investor Relations
Phone: +43 (316) 6902 1332

International technology Group ANDRITZ is a global leading supplier of plants, equipment, and services for hydropower stations, the pulp and paper industry, solid/liquid separation in the municipal and industrial sectors, the steel industry, and the production of animal feed and biomass pellets. In addition, ANDRITZ offers technologies for other sectors including automation, pumps, machinery for nonwovens and plastic films, steam boiler plants, biomass boilers and gasification plants for energy generation, flue gas cleaning plants, plants for the production of panelboard (MDF), thermal sludge utilization, and torrefaction plants. The publicly listed ANDRITZ GROUP is headquartered in Graz, Austria, and has a staff of approximately 17,400 employees worldwide. ANDRITZ operates over 180 production sites as well as service and sales companies all around the world.

ANDRITZ SEPARATION is one of the leading global suppliers of technologies and services for solid/liquid separation and thermal treatment. The comprehensive portfolio includes centrifuges, filters, thermal systems, screens, thickeners, separators, and transportation systems for key industries in separation such as environment, mining and minerals, chemicals, food, and beverages. Based on 150 years of experience, ANDRITZ SEPARATION is a long-term service partner for the entire lifecycle of customer plants, including consulting, delivery of wear and spare parts, full-time technical support, upgrades, and process optimization.


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