Production system for preparing aluminum oxide and phosphorus-containing multi-element fertilizer by using MTO waste catalyst

The utility model relates to the technical field of MTO waste catalyst recycling. The utility model discloses a production system for preparing aluminum oxide and a phosphorus-containing multi-elementfertilizer by using an MTO waste catalyst. The device comprises a stock bin, a rotary kiln, a material receiver, a conical mixer A, a spiral conveyor, a disc type tunnel kiln, a reaction kettle, a rotary drum filter, a crystallization kettle, a horizontal rotary drum centrifuge, a recrystallization kettle, a vibration freeze dryer, a rotary pyrolyzer, a conical mixer B, a chemical reaction mixerand a horizontal stirring ager. The device disclosed by the utility model is reasonable in structure, stable in operation and convenient to maintain, can be used for simultaneously producing the aluminum oxide and silicon-phosphorus-nitrogen ternary compound fertilizer, realizes the recycling of the MTO waste catalyst, reduces the pollution of the MTO waste catalyst to the environment, and has important significance for de