B - Operations – Transporting – 01 – J
Patent
B - Operations, Transporting
01
J
B01J 8/36 (2006.01) A23L 3/50 (2006.01) B01J 8/44 (2006.01) F26B 3/08 (2006.01)
Patent
CA 2091460
2091460 9204113 PCTABS00011 A fluid bed dryer comprises a bed plate (12) defining openings or perforations (22) therein, means (16) for feeding a pulverulent or particulate product (P) to the bed plate (13), means (12, 14) for directing fluidizing gas flows upwardly through said openings or perforations (22) so as to fluidize the product fed thereto, and means (17, 19) for discharging product (p) from the bed plate (13). The bed plate (13) comprises at least one bed plate section, each of which is divided into elongated zones (32, 34-36) extending substantially between first and second positions of the plate section. First and/or second pluralities (22b, 22a) of the openings or perforations (22) are substantially uniformly distributed over the area of each of at least some (34-36) of said zones and are directed and shaped so as to impart to the fluidizing gas flows a flow component which is directed generally towards said first and second positions, respectively. The number of the second plurality of openings (22a) in one zone (35) exceeds that of the other (34, 36), whereby the resulting transporting component of the fluidizing gas flows may be adjusted as desired by choosing proper proportions of the number of the first and second pluralities of openings in adjacent zones.
Christensen Mogens A.
Mccarthy Tetrault Llp
Niro A/s
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