Fluid bed dryer and a bed plate therefor
US4885848A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 13, 1988 |
| Grant date | Dec 12, 1989 |
| Priority date | — |
| Expiry date | Jul 13, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J8/44
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A fluid bed dryer comprises a bed plate having gas distributing openings in the plate. The gas distributing openings are arranged in pairs of substantially oppositely directed openings, and a depressed portion of the plate extends between the openings of each pair. Throughfall of products through such openings is substantially eliminated, and by suitably choosing the relationship of the effective area of the oppositely directed openings in the pairs of openings it is possible to obtain a desired relationship between the vertical fluidizing component and the horizontal transporting component of the upwardly directed gas flow through the openings of the bridge plate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.