Biomass has become an increasingly important element for the utility companies in their effort to reduce CO2 emissions. Untreated biomass has significant drawbacks:
Logistics: Transportation and warehousing cost are high as the energy density is low and the biomass needs to be stored inside due to its nature to absorb water rapidly
Fuel handling: The physical properties require capital investments to either burn the biomass in a dedicated facility or to process the biomass for co-firing with coal.
Limitations: Even with considerable investment in the power station infrastructure, untreated biomass and wood pellets can only be co-fired with coal to a limit of 5-10%.

Torrefied solid biomass fuel ("TSBF") overcomes these limitations by converting the biomass to a fuel which has the characteristics of coal:

  • The energy density is significantly increased.

  • The fuel is hydrophobic and does not require dry storage.

  • The fuel does not require capital investments to be used in existing power stations.

  • TSBFcan be co-fired with coal above 50%, with possibly no upper limit.

Biomass accounted for about 10% of global primary energy supply (an estimated 56.6 EJ). The “modern biomass” share included approximately 13 EJ to supply heat in the building and industry sectors: an estimated 5 EJ converted to produce around 116 billion litres of biofuels (assuming 60% conversion efficiency of the original biomass), and a similar amount used to generate an estimated 405 TWh of electricity (assuming 30% conversion efficiency).
- Source: Renewables 2014 Global Status Report, REN21. -


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