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Charcoal and bio-coal.

Raw material for production Pyrolysis treatment
Biomass, biosolids, plant shells, dry sludge 250 – 400 oC

Torrefaction of biomass and biosolids leads to obtaining a dry product with enhanced fuel properties (bio-coal, charcoal, torrefied biomass), which leads to production of very good energy carrier that features LHV of above 21 MJ/kg.

With further densification (pelletising, briquetting) energy density of 18-20 GJ/m3 is feasible to achieve, which comparing to values of raw biomass allows to propose 40-50% of reduction in transportation costs.

Torrefaction allows to improve material’s storage properties due to achieving hydrophobic properties and elimination of any biological activity. This eliminates the risk of repelling water and biological decompositions like rotting.

Process leads also to improved grindability of biomass, which guarantees better combustion properties.

Directions of torrefied fuel utilisation:

  • solid fuels for local and decentrilised applications
  • co-firing in existing coal-fired power stations
  • alternatives and replacement for conventional fuels
  • coal replacement in steel production industry
  • wood powder fuels
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