NOVELTY - The bypass flow path (134) with water content removal unit (136) is provided along the gas supply flow path (66) through the flow path selector valve (32). When the valve (132) is in primary and secondary positions, the organic gas from carbonization furnace is supplied to the combustion burner (60) and bypass flow path for removing water content, respectively.    USE - For organic substances such as inflammable waste material, organic refuse, wooden chips, rubber pieces, plastic pieces, paper diaper and feathers of hen, etc.    ADVANTAGE - Carbonization process of the material to be processed is performed efficiently at high temperature due to the provision of bypass path with water content removal unit. Manufacturing cost of the carbonization apparatus is reduced. The processed material is ejected reliable from the carbonization furnace. As the gas with low temperature flows along outer cylindrical structure of furnace, temperature rise of connector, is controlled using heat insulator, thereby damage to the bearings is prevented. The provision of cover for discharge port prevents flow of material through the port during combustion process.    DETAILED DESCRIPTION - The cylindrical carbonization furnace (2) which is rotatably supported by a support mechanism (20) has cover to close and open a discharge port during carbonization process and processed material ejection process respectively. The carbonization furnace consists of a carbonization tank (4) and a heating tank (6) which covers the carbonization tank. A connector (70) is provided between the inner and outer cylinders (72,71) of furnace. The furnace has an inlet in upper portion through which material to be processed is supplied and a stirrer attached to a rotary shaft supported by bearing and covered with heat insulator.    DESCRIPTION OF DRAWING(S) - The figure shows a sectional view of carbonization apparatus.    Cylindrical carbonization furnace (2)    Carbonization tank (4)    Heating tank (6)    Support mechanism (20)    Flow path selector valve (32)    Combustion burner (60)    Gas supply flow path (66)    Connector (70)    Cylinders (71,72)    Valve (132)    Bypass flow path (134)    Water content removal unit (136)