based on the demo I requested in the Delta Separations production facility, you can absolutely set that stuff on fire. 
I was wheeling mine outside to the “compost” pile, but last week somebody was paid to haul that away (city permitting nonsense), so I too am wondering what to do with spent biomass atm.
of course my long term goal is to close another loop and make my extraction solvent from it.
I suspect it would work better than sawdust for this really bad ideaTM
if you’re looking for actual implementation details, this one is more appropriate