Method and apparatus for fractionation of a mixture on a simulated fluidized bed in the presence of a compressed gas, a supercritical fluid or a subcritical liquid
US5422007A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 27, 1993 |
| Grant date | Jun 6, 1995 |
| Priority date | — |
| Expiry date | Dec 27, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D15/40
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An apparatus and process for fractionation of component mixtures by chromatography or adsorption on a simulated mobile bed comprising three, four or five zones is described. A compressed gas is injected as eluent (IE, IR) using a compressor or pump, the pressure being lower than the critical pressure of the gas. At any point in at least one zone and preferably at any point in at least two zones from the eluent injection point (IR), the gas has a compressibility coefficient substantially different to 1. A supercritical fluid or a subcritical liquid may equally be injected as the eluent. The pressure between each zone may be altered.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.