The factory will be rectangular in the plan. The walls can be made of temperature- proof concrete. The cassetes for row materials (cylinder) should be made of steel by thickness 10... 12 mm, are possible from pipes. It is necessary to have the lift, for cassetes. The time of cassete stay in each zone will be 8 hours. Once for 8 hours the cassete from charcoaler section takes out and put in a support for cooling. The cassete from dryer section puts in charcoaler section. A new cassete with fire wood puts in dryer section. A heat transport through a wall in charcoaler section and passage with a smoke through fire wood in dryer section. The top cover of the cassete is closed in charcoaler section and pyrolieses gases leave down stears, the top cover of cassete is open in dryer section and gases pass through row materials.