Drying In Cyclones. An Experimental Study

In this work the drying process was studied in cyclones using spent coffee grounds with 55% (w.b.) of initial moisture content. Air was used as drying agent at different inlet temperatures. The temperature profiles of hot air in the empty cyclone and the results of a series of drying tests are reported. Correlations of heat and mass transfer coefficients were obtained and these were found to vary with volumetric concentration of solids. The results are compared with others obtained for pneumatic and fluidized bed dryers.28129