Device for treating powder particles by rotary flow

Drying and gas or vapor contact with solids – Apparatus – With fluid current conveying of treated material

Reexamination Certificate

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Details

C034S582000, C034S586000, C034S593000, C034S368000, C422S139000, C422S186000, C422S186300

Reexamination Certificate

active

06892475

ABSTRACT:
The present invention relates to a rotating fluidized bed apparatus for powder particle. A gas circulation path is formed at the periphery of the treatment chamber2via the circumferential faceplate202, 212, and the circumferential faceplate is adapted to rotate around an axis. Behavior of powder particles can be controlled by introducing gas from the periphery of the treatment chamber via the circumferential plate212to exert centripetal force on the powder particle, while exerting centrifugal force on the powder particles accompanying rotation of the circumferential plate212. In another aspect, by making the arrangement proportion of the bag filter5inside the treatment chamber2wider than the surface width of the dispersion plate212or larger than the surface area of the dispersion plate212, it is possible to cause gas that has flowed into the treatment chamber2to be discharged at a lower rate at an axial region inside the treatment chamber2where centrifugal force is weak and discharge rate is fast. It is possible to carry out optimal operation control of introduction and discharge of gas for fluidized bed behavior.

REFERENCES:
patent: 3849900 (1974-11-01), Dale et al.
patent: 5374405 (1994-12-01), Firnberg et al.
patent: 07-108157 (1995-04-01), None
patent: 07-171322 (1995-07-01), None
patent: 2002-119843 (2002-04-01), None
patent: 2002-143705 (2002-05-01), None

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