This equipment is a fluidized bed/fixed bed system based on a vertical tube furnace design. The main body of the equipment is a 1600℃ vertical tube furnace, using high-purity corundum tube, which can work at a high temperature of 1600℃; the equipment is equipped with a two-channel mass flow meter, and the needle valve of the vacuum flange can provide different gas flow rates, The equipment is equipped with two mass flow meters, and the needle valve of the vacuum flange can provide different gas flow rates, and then realize the function of fluidization or fixed bed or hanging burning. The bottom flange of the furnace tube is equipped with a microporous ceramic plate, which can disperse the gas introduced at the bottom to make the gas and the reactant fully contact, which is beneficial to the reaction.