Hey everyone! I am pretty new and I love what you do here.
Anyway, lets get to it, eh? BTW, just an armchair QB, so without practice, this may be like a fart in the wind.
So, been thinkin'... would/could one, instead of insulate a heat riser, create a space in which bio-char could be made? Possibly run a gas line out, and even back into the feed tube as a fule supplement.
Of course, since this is quite a vague idea, let your creativity run free. You could break down plastics, sawdust, perhaps capture more or different fuels as the gases cool.
MrTeslonian, aka the teslonian man show on youtube has an excellent video on a gasification system that I found entirely entertaining. Perhaps i'll figue out how to embed a vid!