Conveyors: fluid current – Pulsing fluid current
Reexamination Certificate
2006-01-17
2006-01-17
Dillon, Jr., Joe (Department: 3651)
Conveyors: fluid current
Pulsing fluid current
C406S090000, C406S138000
Reexamination Certificate
active
06986625
ABSTRACT:
This invention is a method for operating fluidized beds, such as used to convey powdered material, wherein the fluidizing gas flows are pulsed or vibrated to help initiate and maintain fluidization. The invention maintains the fluidization effects by preventing channeling or ‘rat-holing’ in a powder bed by oscillating gas pulse frequencies in the 0.5 to 300 hertz range. The invention further is directed to efficient conversion of the energy contained in the pressurized gas flow to vibrational energy. The invention describes devices capable of feeding one or more fluidized-beds from a compressed (pressurized) gas supply, thus conserving energy and increasing mass transfer within the beds.
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