Process for the manufacture of persalt particles
US6267934A · kind A · utility
8Cited by
7References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 22, 1999 |
| Grant date | Jul 31, 2001 |
| Priority date | — |
| Expiry date | Feb 22, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D9/0063
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention relates to an apparatus for the continuous manufacture of solid particles of alkali metal persalts by reaction of an aqueous hydrogen peroxide solution with an aqueous solution of an alkali metal salt and crystallization of the persalt. The persalt is formed in a crystallizer classifier, which is made up of stirred region and a growth region for the persalt crystals a non-stirred clarifying region for the solution and a classification region for the particles obtained by elutriation in a liquid stream withdrawn in the clarifying region.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.