Dissolution method and apparatus
US4968420A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 13, 1989 |
| Grant date | Nov 6, 1990 |
| Priority date | — |
| Expiry date | Mar 13, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01F35/7176
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A dissolution system employs a tapered vessel that has a wide, upper mouth and a narrow, lower neck. A liquid is introduced into the vessel through the lower neck and flows upwardly. A powder to be dissolved in the solution is introduced onto the liquid surface at the wide, upper mouth of the vessel and sinks downwardly into the liquid. Powder that does not quickly dissolve gravitates down towards the neck where dissolution is facilitated by the increased purity and the increased flow per unit area of the incoming liquid. Settling of the powder at the base of the vessel is prevented by the incoming fluid flow. The dissolved solution is withdrawn through an outlet port.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.