TRCPA - The article on Minnesota Power was a great find. It cleared up a lot for me regarding why torrefaction is needed. As I recall, fuel is less susceptible to moisture after torrefaction, which would seem to be a must have value added process in order to keep material handling and storage costs down.
They use a surprising amount of fuel each day. Do you have a source of happen to recall what the MF-777 throughput is? The 3 S-6 system set up in Okinawa processes 66 tons/day. Minnesota is consuming 100 tons/day. I am curious to see how the systems would compare - S-6 to MF-777.