NOVELTY - A small carbonization furnace comprises upper part of sealed furnace which has insertion opening for organic matter, flame tube standingly arranged longitudinally, combustion kettle holder which burns organic matter connected to lower end of flame tube, waste gas discharge port provided in upper end of flame tube, superheater tube for superheated-steam generation arranged to flame tube outer periphery vertical direction in outer side of flame tube, inner side of superheater tube arranges longitudinally the coil which generates superheated steam and burner.    USE - A small carbonization furnace for generating fuels such as carbonized material generated in biomass type fuel, plastic waste, refuse-derived fuel and recycled plastic fuel. It is also used for processing exhaust gas about the processing of thermal decomposition gas. (All claimed)    ADVANTAGE - The furnace is portable in car because of its small size. Great contribution is made in the waste-treatment area, where almost all waste materials (e.g. wood chips, timber pellet or construction scrap wood) can be carbonized and reduced simply and rapidly without generating bad smell. Garbage collection cost and refuse-disposal expense are reduced. Construction of large sized waste disposal plant is made unnecessary. There is lesser fuel cost in battling against global warming and energy-saving property is excellent.    DETAILED DESCRIPTION - A small carbonization furnace comprises:    (1) upper part of sealed furnace which has insertion opening for organic matter;    (2) flame tube standingly arranged longitudinally;    (3) combustion kettle holder which burns organic matter connected to lower end of flame tube;    (4) waste gas discharge port provided in upper end of flame tube;    (5) superheater tube for superheated-steam generation arranged to flame tube outer periphery vertical direction in outer side of flame tube;    (6) inner side of superheater tube arranges longitudinally the coil which generates superheated steam;    (7) coil which is connected with spray nozzle which inject superheated steam in sealed furnace;    (8) boiler which generates saturated steam provided in combustion kettle holder;    (9) jet nozzle of saturated steam generated from boiler directly coupled with coil entrance side for superheated-steam generation;    (10) inlet where entrance side of boiler tube directly couples;    (11) thermal decomposition gas produced by combustion of heat of the combustion kettle holder from organic matter thrown inside of furnace blows off from inlet port of thermal decomposition gas provided in flame tube lower part to flame tube upper part of vertical direction;    (12) blow-in opening which forcedly blows in air to flame tube upper part which bring generation of superheated steam, and heat-processing function of thermal decomposition gas on flame tube upper part by carrying out combination combustion of the remaining heat i.e. thermal decomposition gas and blow-in air of combustion kettle holder;    (13) exclusive kettle holder of biomass fuel;    (14) burner for ignition;    (15) incinerated-ash receptacle fire grate; and    (16) rotary with reversal ash-discharge function hearth in combustion kettle holder.    DESCRIPTION OF DRAWING(S) - The drawing shows a side sectional view of small carbonization furnace. (Drawing includes non-English language text).