Fluidization structure for fluidized bed gasifier and N-shaped material returning valve

The utility model relates to a fluidized structure and N-shaped return valve for fluidized bed gasifier, including: horizontal radial fluidization subassembly and axial fluidization subassembly, horizontal radial fluidization subassembly includes a plurality of horizontal radial fluidization pipe symmetrically arranged on the downward extension part of N-shaped return valve rising riser, the axial fluidization assembly is arranged below the horizontal radial fluidization assembly, an air inlet is formed in the bottom end of the downward extending portion of the N-shaped material returning valve rising vertical pipe, the axial fluidization assembly is provided with a plurality of air channels, and the extending direction of the air channels is parallel to the center line of the N-shaped material returning valve rising vertical pipe. According to the fluidization structure and the N-shaped material returning valve provided by the utility model, horizontal fluidization air is provided by the horizontal radial fl