NOVELTY - The preliminary oxidizing and carbonizing integral device includes a stove structure system, an atmosphere control system, a temperature control system and a tail gas treatment system. A housing (2) in the stove structure system is supported by a bracket (1) and provided with a horizontal cylindrical stove chamber (5) having an inner wall wound with heating wires (4). A digital display control heater (15) inside the temperature control system is inserted into the stove chamber to connect with a thermocouple (14) through a temperature measuring hole (10) formed on one end of the stove chamber.    USE - Simple preliminary oxidizing and carbonizing integral device used in carbon fiber and biomass production.    ADVANTAGE - Provides a simple preliminary oxidizing and carbonizing integral device that has simple structure, convenient operation, accurate parameter control, and preliminary oxidizing and carbonizing function. Ensures that the simple preliminary oxidizing and carbonizing integral device can be used for economic, clean and efficient carbon fiber and biomass production.    DETAILED DESCRIPTION - A mobile sample frame (6) is placed into the stove chamber. An insulating layer (3) is arranged between the stove chamber and housing. One end of the stove chamber is provided with air and nitrogen inlets (7,8) and the temperature measuring hole, while its other end is provided with a screw cap type sealing door (11). An air outlet (9) is formed on the screw cap type sealing door. The air and nitrogen inlets are connected to an air steel bottle (19) and a nitrogen steel bottle (18) by a valve (13) and a gas flow meter (12) inside the atmosphere control system. The air outlet is connected to a cleaning bottle (17) by a condenser (18) in the tail gas treatment system. Purified water is placed into the cleaning bottle.    DESCRIPTION OF DRAWING(S) - The drawing shows the sectional view of the simple preliminary oxidizing and carbonizing integral device.    Bracket (1)    Housing (2)    Insulating layer (3)    Heating wires (4)    Stove chamber (5)    Mobile sample frame (6)    Air and nitrogen inlets (7,8)    Air outlet (9)    Temperature measuring hole (10)    Screw cap type sealing door (11)    Gas flow meter (12)    Valve (13)    Thermocouple (14)    Digital display control heater (15)    Cleaning bottle (17)    Condenser (18)    Nitrogen steel bottle (18)    Air steel bottle (19)