Process for the manufacture of persalt particles
US5906660A · kind A · utility
13Cited by
5References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 15, 1997 |
| Grant date | May 25, 1999 |
| Priority date | — |
| Expiry date | May 15, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D9/0063
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Continuous process for the 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 formed in a crystallizer-classifier comprising a stirred formation and growth region for the persalt crystals, a nonstirred clarifying region for the solution and a classification region for the particles obtained by elutriation in a liquid stream withdrawn in the clarifying region. Plant for manufacturing the said particles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.