Plasma fluidized bed type self-sustained catalytic combustion converter diffused gas device

The embodiment of the utility model relates to a coal gas diffusing device of a plasma fluidized bed type self-sustained catalytic combustion converter. The coal gas diffusing device comprises a plasma shell, an inner electrode, an outer electrode, a granular catalyst, an air cap type air distribution plate, a porous clamping plate, a reaction gas inlet and a reaction gas outlet, the reaction gasinlet is formed in the bottom of the plasma shell side wall; the reaction gas outlet is formed in the top of the plasma shell side wall; the inner electrode penetrates through the bottom of the plasmashell, one end of the inner electrode is located inside the plasma shell, the other end of the inner electrode is located outside the plasma shell, and the outer electrode is located on the side wallof the plasma shell. The granular catalyst is located in the plasma shell, the two sides of the granular catalyst are in contact connection with the inner wall of the plasma shell, and the hood typeair distribution plate is in