The structure of the boiling granulation dryer of Jiangsu Yutong Drying Engineering Co., Ltd. can be divided into four parts: air filtration and heating part; Material boiling spray and heating part; Powder collection, reverse blowing device and exhaust structure; Infusion pump, spray gun piping, valves, and control system. The machine mainly consists of a fluidized bed chamber, raw material container, air inlet and outlet, air filter, air compressor, liquid supply pump, blower, air preheater, bag filter device, etc.