| 摘要 |
PURPOSE:To produce dry powder with high heat efficiency by the title compact device by pulverizing a liq. material into dry powder in the fluidized bed wherein many fluidization mediums are blown up by hot air in the device for pulverizing the liq. material into dry powder using the fluidization medium. CONSTITUTION:The air cleaned by an air filter 1 is heated by an air heater 2, and introduced into a fluidization vessel 4. The liq. material M from a raw material tank 3 is brought into contact with the air in the vessel 4 through fluidization medium 16, and the liq. material is dried and pulverized into dry powder. The dry powder is sent out into a bag filter 6 through a cyclone 5, and recovered. The fluidization vessel 4 charged the liq. material M is provided with a hot-air chamber 11 and a fluidization chamber 12, a perforated diffusion plate 13 is furnished between both chambers, and a heat exchanger 25 is placed above the plate 13 and embedded in the fluidized bed. With respect to the heating by the heat exchanger 25, the exhaust loss is diminished to zero, only the heat quantity to be effectively used in drying is supplied, and hence the heat efficiency is improved. |
