Method and apparatus for treating a bed of particulate material

Details Method and apparatus for treating a bed of particulate material Method and apparatus for treating a bed of particulate material

1998-02-23

2000-07-04

Gravini, Stephen

Drying and gas or vapor contact with solids

Process

With fluid current conveying or suspension of treated material

34369, 34358, 34570, F26B 300

Patent

active

060820217

ABSTRACT:
A bed (6; 78) of particulate material, which is supported by a gas distribution bottom (9; 75), is located utilizing a treatment gas, which via ducts (19; 35; 77) is conducted in sectionalized manner to and directed up through the gas distribution bottom and the bed of material from one or several underlying compartments (15; 76). The flow of the treatment gas through each duct (19; 35; 77) is self regulated by means of a flow regulator (21) provided in each duct. It is thereby obtained that the total pressure loss across the gas distribution bottom can be reduced, that the flow of the treatment gas through the material bed is distributed in a desirable and well-defined manner across the entire gas distribution bottom regardless of the composition of the material bed and the distribution thereon, and that tunnel formations are avoided.

REFERENCES:
patent: 2629938 (1953-03-01), Montgomery
patent: 3276755 (1966-10-01), Bast
patent: 4354438 (1982-10-01), Beckmann
patent: 4367065 (1983-01-01), Cnare
patent: 4387667 (1983-06-01), Goodstine et al.
patent: 4728287 (1988-03-01), Niems
patent: 4732561 (1988-03-01), Eiring et al.
patent: 4760779 (1988-08-01), Morris
patent: 5348449 (1994-09-01), Wilke et al.

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