Patent Abstract

     A method for operating fluidized-beds, used primarily to convey powdered material, wherein the fluidizing gas flows are pulsed or vibrated to help initiate fluidization.
    The improvement to which sustains the fluidization effects by preventing channeling or ‘rat-holing’, that occur when using a single frequency, by oscillating the frequencies in the 0.5 to 300 hertz range, and a means of efficiently converting the energy contained in the compressed gas flow to vibrational energy.
    The invention describes devices capable of feeding one or more fluidized-beds from a single compressed gas supply, thus conserving energy and increasing the mass transfer within the beds.