First American Scientific Corp. (fka FASC)

[TRCPA]

Added value of torrefied biomass

Torrefied and densified biomass has several advantages in different markets, which makes it a competitive option compared to conventional biomass (wood) pellets:

Higher energy density

Energy density of 18 - 20 GJ/m3 compared to 10 - 11 GJ/m3 driving a 40 - 50% reduction in transportation costs.

More homogeneous composition

Torrefied biomass can be produced from a wide variety of raw biomass feedstocks while yielding similar product properties. The main reason for this is that about all biomass are built from the same polymers (lignocellulose). In general (woody and herbaceous) biomass consists of three main polymeric structures: cellulose, hemicellulose and lignin. Together these are called lignocellulose. The chemical changes of these polymers during torrefaction are practically similar resulting in similar property changes.

Hydrophobic behavior

Torrefied biomass has hydrophobic properties, and when combined with densification make bulk storage in open air feasible.

Elimination of biological activity

All biological activity is eliminated reducing the risk of fire and stopping biological decomposition.

Improved grindability

Torrefaction of biomass leads to improved grindability of biomass. This leads to more efficient co-firing in existing coal fired power stations or entrained-flow gasification for the production of chemicals and transportation fuels


http://en.wikipedia.org/wiki/Torrefaction