Process for purification of an organic acid including an electrodialysis treatment step
US10279282B2 · kind B2 · utility
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3References
11Claims
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Assignee
Inventors
Key dates
| Filing date | Mar 12, 2015 |
| Grant date | May 7, 2019 |
| Priority date | — |
| Expiry date | Mar 12, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C51/42
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
It is an object of the invention to provide a process for producing an organic acid, comprising: providing an incoming stream containing an organic acid and impurities; subjecting said incoming stream to a step of chromatographic separation, using a solution of mineral acid as an eluent, so as to collect an extract and a raffinate, the organic acid being recovered in the extract; and subjecting the raffinate to an electrodialysis step, so as to collect a diluate and a concentrate, the mineral acid being concentrated in the concentrate. The invention also provides an installation for implementing this process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.