As a general inventor, I can see some alternatives. For one, if you don't need a blast furnace, building a simpler stove with a stovepipe using an alcohol stove would be easy enough, and not even use a fan.
Your air for the stove would be intake holes at the bottom (I kinda see a coffee can here),
and as long as the airpath lends itself to rising, it would be continual until the fuel ran out.
The flame would heat the box/can itself. Both the can/box and flue would be double walled:
can in a can, electrical tubing flue with larger piece over this at point of exit from tent/motorhome/palace. The flue would be then capped for rain, and slowing of exhaust gasses for radiative heat from all. Electrical conduit connector screws on at lid.