Liquid extraction
US5662861A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 3, 1996 |
| Grant date | Sep 2, 1997 |
| Priority date | — |
| Expiry date | Jul 3, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/20
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Apparatus for liquid extraction is described. The apparatus includes a mixer to which a solvent stream (15) and a feed stream (16) are fed and in which they are mixed to form a flow stream or dispersion. The flow stream is fed to a two-stage settler (17) having a first settling stage (31) and a second settling stage (32). The first settling stage (31) is dimensioned such that primary phase separation occurs in the first settling stage (31), whilst secondary phase separation occurs in the second settling stage (32). The volume of the first settling stage (31) is less than that of the second settling stage (32). A process for liquid extraction, and a method for retrofitting a conventional mixer-settler are also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.