Simulated moving bed chromatographic separation process
US9790162B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 30, 2015 |
| Grant date | Oct 17, 2017 |
| Priority date | — |
| Expiry date | Sep 30, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11B3/12
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention provides a chromatographic separation process for recovering a polyunsaturated fatty acid (PUFA) product, from a feed mixture, which process comprises introducing the feed mixture to a simulated or actual moving bed chromatography apparatus having a plurality of linked chromatography columns containing, as eluent, an aqueous alcohol, wherein the apparatus has a plurality of zones comprising at least a first zone and a second zone, each zone having an extract stream and a raffinate stream from which liquid can be collected from said plurality of linked chromatography columns, and wherein (a) a raffinate stream containing the PUFA product together with more polar components is collected from a column in the first zone and introduced to a nonadjacent column in the second zone, and/or (b) an extract stream containing the PUFA product together with less polar components is collected from a column in the second zone and introduced to a nonadjacent column in the first zone, said PUFA product being separated from different components of the feed mixture in each zone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.