NOVELTY - A spiral biomass pyrolysis reactor comprises material cylinder, first speed regulating motor and spiral feeder. The material cylinder is located at feeding opening of spiral feeder. A discharging opening of spiral feeder of reactor communicates with one side of lower part of an upright drying hoisting cylinder. The bottom part of drying hoisting cylinder communicates with wind outlet of draught fan. The top part communicates with feeding opening of spiral pyrolysis reactor via cyclone separator. The discharging opening of cyclone separator communicates with feeding opening of the reactor.    USE - Spiral biomass pyrolysis reactor.    ADVANTAGE - The reactor has drying function.    DETAILED DESCRIPTION - Spiral biomass pyrolysis reactor comprises material cylinder, first speed regulating motor and spiral feeder. The material cylinder is located at feeding opening of spiral feeder. A discharging opening of spiral feeder of reactor communicates with one side of lower part of an upright drying hoisting cylinder. The bottom part of drying hoisting cylinder communicates with wind outlet of draught fan. The top part communicates with feeding opening of spiral pyrolysis reactor via cyclone separator. The discharging opening of cyclone separator communicates with feeding opening of spiral pyrolysis reactor. Cyclone separator is located at upper part of spiral pyrolysis reactor. The other end of the reactor is respectively provided with lower outlet and upper outlet. The lower outlet is pyrolytic carbon outlet while upper outlet is thermal gas outlet. The middle part of the reactor is located in combustion heating chamber. The input end of the reactor is connected with a second speed regulating motor. The top end of combustion heating chamber is provided with smoke gas outlet and smoke gas outlet communicates with wind inlet of draught fan via pipeline. The upright drying hoisting cylinder and cyclone separator are formed to be an air flow type dryer. The spiral pyrolysis reactor is screw propelling mechanism with single screw or screw propelling mechanism consisting of two screws or screw propelling mechanism with three screws.    DESCRIPTION OF DRAWING(S) - The drawing is a schematic diagram illustrating a spiral biomass pyrolysis reactor.