Fluidized bed feeding of pulverized coal

Abstract Some general characteristics of fluidized bed feeders are discussed. Experimental results for the feeding of pulverized coal in the range from 0 to 25 g/min are presented and discussed. Operating procedures that allow virtually trouble-free feeding and a quick method of obtaining solid flow rates are noted. A calculational scheme is also given for predicting the effects of design and operating procedure changes on feed rate. Although we view the computations as being only qualitative, they do give the required bed pressure needed to initiate feeding. Further, the approximately linear relationship between bed pressure and solid flow rate obtained experimentally is predicted also.