| 摘要 |
<p>The invention relates to a Spray Fluid Bed Cooler consists of cooling chamber (1) having a fluid bed (2) at bottom. A Cyclone separator (3) provided to the air out let at top of the chamber. An air circulation blower (4) through Air cooler (5) connected to first air inlet in the fluid bed bottom Fluid Bed air distribution plate (6)and a bottom air jet(7)located in the fluid bed centre. A second air inlet at top air jet (8); a perforated plate (10) provided at top for taking out air from cooling chamber. A spray nozzle for hot liquid spraying provided at top centre of cooling chamber so as to produce spray surrounded by jet of cold air which has path concurrent with sprayed liquid where as air from fluid bed and bottom air jet flows in counter current with sprayed liquid; a hot water jacketed. Afeed tank (11) for hot liquid provided with feed pumps (12). The feed pipeline from the feed tank out let to the said spray nozzle jacketed for hot water circulation. The control means for the air velocities in the cooling chamber (1) and fluid bed (2) to be maintained in such a way that particles of desired size only fall down on fluid bed (2) while all fines are carried over with air. A weir pipe (17) at bottom centre of fluid bed with rotary valve (14) at out let for discharging cooled granules. The bottom outlet of said cyclone joined to the pipe leading to the second air inlet. REFERENCE FIGURE 1</p> |
