Pilot spray dryer is an enlarged equipment of the experimental spray dryer. The whole material is made of stainless steel, and the part in contact with the material is made of 316 sanitary stainless steel, so that the material is not polluted. The equipment is equipped with a complete safety system such as heating protection and safety protection. The equipment is equipped with pulleys, and the whole machine is easy to move. It is mainly suitable for the production of pilot-scale granular powders in universities, research institutes and laboratories of food, medicine and chemical enterprises. Such as emulsions and suspensions have broad-spectrum applicability