Method and system for ion-exchanging particles
US4048284A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 8, 1976 |
| Grant date | Sep 13, 1977 |
| Priority date | — |
| Expiry date | Mar 8, 1996 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J47/10
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Disclosed are a method and system for ion-exchanging cations in zeolitic particles of a size useful in fluidized bed processes; for example, zeolitic microspheres of the type employed in fluidized bed hydrocarbon conversion processes. The zeolitic particles are ion-exchanged by a stagewise countercurrent contact with ion-exchange liquid as they are moved in series over a continuously moving horizontal vacuum belt filter in the form of a thin porous cake, then into an agitated tank where the cake is formed into a slurry, and to another continuously moving vacuum belt filter where the microspheres are again formed into a thin porous cake. The latter cake is contacted with incoming ion-exchange liquid that percolates through the cake, passes to the agitated tank and is charged to the cake on the first belt filter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.