Method and apparatus for the counter-current mass exchange between two phases having different densities
US4623466A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 11, 1982 |
| Grant date | Nov 18, 1986 |
| Priority date | — |
| Expiry date | Mar 11, 2002 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J47/11
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
This invention provides a method and an apparatus for effecting counter-current mass exchange between two non-miscible phases A and B, for example a liquid phase A and a liquid or solid phase B, circulating in opposite directions from one end to an opposite end of a vertical tower comprising a plurality of superposed chambers in which the first phase A is caused to circulate continuously and the second phase B is caused to circulate discontinuously. One chamber is empty and is adapted to receive the phase B contained in the next chamber thereabove, the two chambers being isolated from any supply of phases A and B. A small fraction of the liquid phase A is diverted for directing continuously this phase to the other chambers of the tower, the thus diverted fraction being introduced into the next chamber above the empty chamber for carrying away the phase B contained in the lower empty chamber, this diverted fraction being reintroduced into the circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.