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The Torrefaction process can be applied for a wide range of organic materials such as wood chips and straw. It is a thermochemical process where various biomasses are treated in the absence of oxygen at temperatures between 250 ... 300 ºC.
The torrefied biomass has a greater stability in prolonged storage as it is more resistant to biological degradation. It has a high energy density reducing significantly storage and transport costs.

For this application the LIST KneaderReactor is equipped with an optimized mixing shaft geometry which promotes the heat transfer to the dry product.

LIST Technology and Centro Nacional de Energías Renovables, Aoiz, Spain (CENER, have a cooperation to promote the LIST Torrefaction technology


Various types of wood chips, e.g. pine, poplar, beech, eucalyptus, pawlonia, olive tree pruning and chopped straw.

Your Benefits

  • Narrow residence time distribution combined with a wide and flexible range of residence times
  • Effective heat transfer
  • Large heat transfer surfaces
  • Precise and uniform temperature control
  • Safe operation


Titel Beschreibung Sprache Jahr Download
Biomass Torrefaction: Technological services Torrefaction is a thermochemical treatment of the biomass, carried out at temperatures between 200 and 300 C in the absence of O2. This treatment produces beneficial changes on the biomass fuel, such as the improvement in milling behavior, the increase of calorific value, reduction of Cl, N and S content, reduction of equilibrium moisture content and the improved resistance to biological degradation. Englisch 2017