Purification of crystallized solids made via continuous crystallization
US4781899A · kind A · utility
11Cited by
11References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 27, 1984 |
| Grant date | Nov 1, 1988 |
| Priority date | — |
| Expiry date | Jul 27, 2004 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D9/0059
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Crystal solids made via the continuous crystallization of a crude, concentrated aqueous feed solution are recovered as a crystalline solid product that is relatively free of impurities present in the crystallizer liquor. A portion of the withdrawn crystallizer slurry is concentrated in a first hydroclone, diluted with crystallizer feed solution, concentrated in a second hydroclone, and centrifuged and dried to recover the crystalline solid product.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.