Continuous process and apparatus for chromatographic separation of a mixture of at least three constituents into three purified effluents using two solvents
US5093004A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 28, 1990 |
| Grant date | Mar 3, 1992 |
| Priority date | — |
| Expiry date | Aug 28, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D15/40
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A description is given of a process and an apparatus for continuous separation in fluid phase of a mixture of at least three constituents into three fractions. A technique is used, known as the simulated countercurrent technique, in a separation column which is filled with sorbent and has 6 zones 6, 5, 4, 3, 2 and 1 which have different functions, and the following sequence of steps is carried out: strong solvent S.sub.2 is introduced, an extract E.sub.2 with strong solvent is removed, weak solvent S.sub.1 is introduced. The extract with weak solvent E.sub.1 is drawn off, the separating mixture is introduced, refined substance is drawn off with weak solvent R, rinsing solvent (S.sub.1) is introduced, a current Rcy is recycled alternatingly towards the feed of strong solvent S.sub.2 and then towards the feed of weak solvent S.sub.1. A current coming from zone 6 is sent alternatingly to an outlet for the extract with strong solvent E.sub.2, then towards the intake of the fifth zone. The various feeds and substances removed are periodically advanced synchronously through the column. Application in particular for the separation of glucose, xylose and arabinose and for the separation of…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.