Cleansing device for fluidized bed reactors
US4190963A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 24, 1978 |
| Grant date | Mar 4, 1980 |
| Priority date | — |
| Expiry date | Feb 24, 1998 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF28D13/00
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
In the chamber of a fluidized bed reactor for processing powdered products, a pneumatic cleansing device is arranged which comprises at least one pipe member mounted to be movable parallel to a perforated powder supporting plate at a small distance from the upper side thereof and having nozzles for ejecting air or gas towards the supporting plate to remove depositions of material from the upper side thereof between the perforations in the plate through which a fluidization gas flows upwardly to form a fluidized powder layer overlying the plate. The cleansing device may comprise additional pipe members with nozzles for ejecting air or gas towards the side wall and ceiling of the chamber and may be constructed for use in a box-shaped chamber as well as a cylindrical chamber for fluidized bed reactors of the plug-flow or spray granulation types.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.