Device for treating powder particles by rotary flow
First Claim
1. A rotating fluidized bed apparatus for powder particle, said apparatus causing gas to flow into a cylindrical treatment chamber in which powder particles are placed via a circumferential faceplate having permeability, and discharging gas that has flowed into the treatment chamber from the treatment chamber via a bag filter, wherein a gas circulation path is formed at the periphery of the treatment chamber via the circumferential faceplate, and the circumferential faceplate is adapted to rotate about an axis.
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Accused Products
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 chamber 2 via the circumferential faceplate 202, 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 plate 212 to exert centripetal force on the powder particle, while exerting centrifugal force on the powder particles accompanying rotation of the circumferential plate 212. In another aspect, by making the arrangement proportion of the bag filter 5 inside the treatment chamber 2 wider than the surface width of the dispersion plate 212 or larger than the surface area of the dispersion plate 212, it is possible to cause gas that has flowed into the treatment chamber 2 to be discharged at a lower rate at an axial region inside the treatment chamber 2 where 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.
12 Citations
25 Claims
- 1. A rotating fluidized bed apparatus for powder particle, said apparatus causing gas to flow into a cylindrical treatment chamber in which powder particles are placed via a circumferential faceplate having permeability, and discharging gas that has flowed into the treatment chamber from the treatment chamber via a bag filter, wherein a gas circulation path is formed at the periphery of the treatment chamber via the circumferential faceplate, and the circumferential faceplate is adapted to rotate about an axis.
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14. A rotating fluidized bed apparatus for powder particle comprising, inside a casing,
a rotatable treatment chamber being provided with cylindrical gas ventilation means having permeability circumferentially about its axis, gas introduction means provided at the periphery of the treatment chamber for causing gas to flow into the treatment chamber via the gas ventilation means, and a bag filter, provided inside the treatment chamber, for discharging gas that has been introduced into the treatment chamber to the outside, wherein the bag filter has an arrangement proportion inside the treatment chamber such that said proportion inside the treatment chamber is wider than a surface width of the gas ventilation means, or larger than the surface area of the gas ventilation means.
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17. A rotating fluidized bed apparatus for powder particle comprising, inside a casing,
a rotatable treatment chamber being provided with cylindrical gas ventilation means having permeability circumferentially about its axis, gas introduction means provided at the periphery of the treatment chamber for causing gas to flow into the treatment chamber via the gas ventilation means, and a bag filter, provided inside the treatment chamber, for discharging gas that has been introduced into the treatment chamber to the outside, wherein the gas introduction means is comprised of a gas introduction passage formed between the casing and the ventilation means, and a plurality of supply ports provided at intervals on an inner wall forming the gas introduction passage.
Specification