A process and an apparatus for spray drying a liquid to produce an agglomerated product

摘要

In a process and an apparatus of spray drying an agglomeration is performed in a chamber having an internal fluidized bed and a plurality of filter elements to catch particles from the spent drying gases before exhaustion thereof, the agglomeration is substantially improved by releasing particles collected on said filter elements by means of intermittent reverse flow gas pulses individually controlled to each filter element or to each of small groups of filter elements each comprising only a few of the total number of filter elements.