Best practical way of making biochar for soil improvement on commercial scale?
Smaller cylinder (that goes inside) is open ended and stand on bigger cylinder baseplate with airtight lid that gets closed after filling with wood chips. It has 50mm outlet at the top that connects to a metal pipe (coming through the side of the outer cylinder) that leads woodgas to the bottom of the next retort and maybe have a drain to catch bio oil. The idea being that I can duplicate the retorts to increase production using woodgas from the previous to pyrolize the next. I then only have to burn wood in the first retort to get the process started. Please suggest improvements, or complete new more viable system. What can I use for isolation material? Can I collect other products off the woodgas instead of pyrolising the next batch? What other byproducts might be valuable?