Process for transporting particulate material

Details Process for transporting particulate material Process for transporting particulate material

B - Operations, Transporting

65

G

201/148

B65G 53/04 (2006.01)

Patent

CA 1248906

A B S T R A C T PROCESS FOR TRANSPORTING PARTICULATE MATERIAL Particulate material is transported from a low pressure zone to an elevated pressure zone by - passing the material from the low pressure zone to the top of the first one of a number of vertical oblong vessels; - passing the material in each vessel by gravity as a moving bed from the top of the vessel to the bottom thereof; - passing the material from the bottom of each vessel but the last one to the top of the subsequent vessel by means of a carrier gas which is separated from the material at the top of each vessel and recycled to the bottom of an earlier vessel than the immediately preceding vessel in the series; - discharging the powder from the bottom of the last vessel to the elevated pressure zone. The gas pressure is built up stagewise; at the bottom of each vessel a gas pressure higher than the one prevailing at the top is applied, while the gas pressure at the top of each vessel is kept substantially equal to the one prevailing at the bottom of the preceding vessel.

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