A Mesh Belt Dryer For Drying Particulate Material

A mesh belt dryer for drying particulate material

, comprising at least one substantially vertical elongate container having: an upper inlet for receiving a charge of moisture containing particulate material; a lower outlet for discharging dried particulate material, whereby said particulate material travels under the influence of gravity from said inlet to said outlet; at least one substantially vertical gas permeable wall through which a drying gas can pass to contact said particulate material; said dryer also comprising at least one plenum on an exterior surface of said at least one gas permeable wall, covering ingress and egress openings within said at least one gas permeable wall.

The mesh belt dryer according to claim 1 wherein the at least one gas permeable wall comprises a substantially continuous corrugated plate, wherein each corrugation comprises a supporting leg and a permeable leg angled with respect to each other, wherein said ingress and egress openings are provided within said permeable leg.

A mesh belt dryer for drying pellets containing brown coal comprising at least one substantially vertical elongate container having: an upper inlet for receiving a charge of brown coal containing pellets; a lower outlet for discharging dried pellets of brown coal, whereby said pellets travel under the influence of gravity from said inlet to said outlet; two opposing substantially vertical gas permeable walls through which a drying gas can pass to contact said pellets; said dryer also comprising plenums on external surfaces of the gas permeable walls covering ingress and egress openings within the gas permeable walls, wherein the plenums are divided into zones of differing air stream properties and wherein the direction of drying gas flow through the charge of brown coal containing pellets is reversed from one plenum zone to an adjacent plenum zone; the dryer comprising lateral internal membrane walls joining opposing gas permeable walls that divide the dryer into a plurality of adjacent cells.

by: ericfu

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