Regeneration of mixed bed resins
US10287186B2 · kind B2 · utility
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9Claims
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Key dates
| Filing date | Apr 13, 2016 |
| Grant date | May 14, 2019 |
| Priority date | — |
| Expiry date | Apr 13, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2303/16
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
In an ion-exchange separation system, a single regeneration column provides for separation of anion and cation resins and the regeneration of both cation and anion resins with a very low level of cross-contamination. After regeneration most of the anion layer in the column is withdrawn, and most of the cation layer is withdrawn, but a portion of each layer adjacent to the interface between the layers remains in the column, to isolate these cross-contaminated portions from the regenerated resins. The withdrawn, regenerated anion and cation resins are placed back into the working vessel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.