Fluidized bed apparatus, in particular for granulation of pulverulent substance
US5040310A · kind A · utility
Inventor
Key dates
| Filing date | Oct 25, 1989 |
| Grant date | Aug 20, 1991 |
| Priority date | — |
| Expiry date | Oct 25, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S159/03
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
In a container (12) a treatment space (14) for substance (16) is arranged, therebelow a wind chamber (22) and between the two a sieve bottom (80). Beneath the sieve bottom (80) a rotor (40) having a circular rotor disc (42) is arranged which is rotatably drivable about an upright central axis (A). The rotor (40) comprises at least one opening (44) which is elongated in approximately radial direction and which allows a gas stream (50) from the wind chamber (22) to pass through the sieve bottom (80) upwardly into the treatment space (14). The sieve bottom (80) comprises approximately radial blades (82) which are each arranged in an at least approximately vertical plane immediately above the rotor disc (42) in such a manner that they conduct the gas stream (50) in a sharply defined sector upwardly. In each sector-shaped gas stream (50) which has passed through the sieve bottom (80) distributed over the radial length thereof and rotating therewith on rotation of the rotor (40) nozzles (76) are arranged for spraying the substance (16) in the treatment space (14).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.