This study reports a 20% reduction in mass, which is less than the 40% figure that has been thrown out. What this industry really needs is a set of verifiable data from a large scale pilot project!
The report also points to a benefit of bio-torrefication that is under appreciated --
"Most interestingly, torrefaction also makes biomass more friable, making it far easier to grind. This opens the prospects of using existing coal pulverizers and of considerably lowering costs of co-firing biomass to generate electricity"
I'm tracking two things to help address the fundamental question: At what price does BioCoal become broadly economic:
- The underlying business model (I'm circulating a draft to people in the inudstry). Let me know if you want a copy
- What is the potential for co-firing milled tottefied biomass in an existing coal fired power plant.