Method and apparatus for countercurrent washing of particulate solids
US4062697A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 30, 1976 |
| Grant date | Dec 13, 1977 |
| Priority date | — |
| Expiry date | Dec 30, 1996 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2011/002
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method and apparatus is described for the countercurrent washing of particulate solids, especially nuclear fuel particles, in a washing tower including a sequential series of washing sections each having a recirculation loop for drawing fluid from an upper portion of the washing section and introducing it adjacent a restricted opening in the bottom of the same washing section in order to control the downward flow of solids from the section, an outlet section of the washing tower being arranged beneath the lowermost washing section and including a restricted passage for regulating flow of washing fluid in the washing tower, additional fluid being introduced into the outlet section of the tower in order to minimize the flow of washing solution through the restricted passage of the outlet section.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.