Modular biomass gasification combustor

The invention discloses a modular biomass gasification combustor. The modular biomass gasification combustor comprises a combustor main body, and a combustion cavity is formed in the combustor main body; a vertical rotatable rotating shaft is arranged in the combustion cavity, and an external thread part is arranged on the rotating shaft; a motor for driving the rotating shaft to rotate is arranged outside the combustor main body; a plurality of vertically arranged guide rods are arranged on the outer side of the rotating shaft; a liftable stirring piece is arranged on the rotating shaft, and the stirring piece comprises an inner ring piece and a disturbance frame connected to the outer side of the inner ring piece; the inner ring piece is in threaded connection with the external thread part on the rotating shaft, and the guide rod is sleeved with the inner ring piece in a sliding mode; and the motor drives the inner ring piece to ascend and descend, so that the stirring frame stirs raw materials. According t