| 摘要 |
PROBLEM TO BE SOLVED: To provide a new fluidized bed granulation drier which increases the quantity of passage near a nozzle of particulate matter in a fluidized bed without complicating the structure of the drier. SOLUTION: This fluidized bed granulation drier 1 is provided with a fluidized chamber 2, a fluidizing wind blowing chamber 4, a perforated plate 5 having many air holes 20 so as to separate the chambers 2, 4 to each other and a nozzle 6 which sprays liquid starting material L in the fluidized chamber 2 and, therein, introduces hot wind from the fluidizing wind blowing chamber 4 to the fluidized chamber 2 via the air holes 20 of the perforated plate 5, fluidizes the particulate matter G in the fluidized chamber 2 and, at the same time, performs the proper treatment such as drying, granulation and coating. Further, therein, the nozzle 6 is disposed so as to spray the liquid starting material L almost upward from the vicinity of the bottom part of the fluidized chamber 2, furthermore, air holes 20a are opened in such a manner that the hot wind which is blown out of the air holes are directed to a mounting part of the nozzle 6 and the particulate matter G which is positioned near the bottom part of the fluidized chamber 2 is moved to the vicinity of the nozzle 6.
|
