PLANT FOR DRYING LOOSE MATERIALS IN FLUIDIZED BED Russian patent published in 1997 - IPC

FIELD: drying of thermosensitive materials. SUBSTANCE: plant includes fan, heat generator and drying chamber 3 with heated air passages and sections 5 and cold air passages and sections 7, used air discharge passage 6, gas distributing grid 9, loading pipe 10, upper port 11 with swivel damper and adjustable baffle for during-operation unloading of material and lower port 12 with swivel damper for complete removal of material from drying chamber in case of stop. Loading branch pipe 10 is connected with feeder provided with capacity regulator depending of initial moisture content of material and funnel. Besides that, plant is provided with device for loading moist material in funnel of feeder and discharge of dried material from drier into reservoirs for storage. Gas distributing grid is made from inclined plates forming slots whose width is equal to 0.03-0.07 of pitch between adjacent slots. Height of baffle of upper port 11 may be changed within 4.4-8.3 of pitch between adjacent slots. EFFECT: enhanced efficiency. 4 dwg