Fluidized bed apparatus for the production and/or further treatment of granulate material
US4970804A · kind A · utility
Inventor
Key dates
| Filing date | Oct 17, 1989 |
| Grant date | Nov 20, 1990 |
| Priority date | — |
| Expiry date | Oct 17, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J8/384
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A container (12) which is arranged at least approximately rotational symmetrical with respect to an at least approximately vertical container axis (A) has an interior which is made up of an inlet chamber (30) adapted to be traversed from the bottom to the top by a gas, in particular dry air, and a vortex chamber (32) which is arranged above the inlet chamber (30) and formed for fluidizing the material (10). Between the inlet chamber (30) and vortex chamber (32) a ring of guide plates (34) is arranged which, seen in the direction of the container axis (A), overlap each other and impart a twist to the upwardly directed gas flow. Between the guide plates (34) lances (40) are arranged at least approximately radially to the container axis (A) and each comprise at least one nozzle (42) arranged in the flow direction of the gas for introducing granulation substances into the vortex chamber (32). By the nozzles (42) large amounts of pulverulent and/or liquid substance per unit time may be sprayed into the vortex chamber (32) without the material forming lumps in uncontrollable manner or appreciable amounts of the substance depositing in the container (12).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.