DRYING STICKY PARTICLES BY EXPOSING THE PARTICLES TO A PULSING AIR FLOW FROM ABOVE WHILE BLOWING DRYING AIR FROM BELOW THROUGH A PERFORATED CONVEYOR

摘要

The present invention relates to a method for preventing agglomeration while drying sticky particles in a fluid bed. The method comprises supplying sticky particles to an upper surface (14) of a perforated conveyor (11) and advancing said sticky particles through the fluid bed (8), supplying drying air flow substantially upwards through the perforated conveyor (11) to the sticky particles on it. While drying the particles exposing them substantially from above to a pulsing air flow so that they are caused to move and to break up agglomerates of sticky particles. This is done while drying and pulsing air flow, the pulsation, and the drying air temperature is controlled. The invention also relates to a fluid bed (8) preventing agglomeration while drying sticky particles. IMAGE