Jan here is how many now are separating out their hearth soots, char and ash. A dropper chamber. The round can between the righthand gasifer and the left hand hay filter barrel.
I am familiar, and have used horizontal flow rectangular dropper chambers on stationary systems. Used vertical form gas to liquid heat farmers that would drop out a lot of carbons too.
My point is many who were once cyclone users are not anymore.
S.U.