Removal of sulfate from solvent solutions using an anion exchange resin
US10543453B2 · kind B2 · utility
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6References
26Claims
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Inventor
Key dates
| Filing date | Apr 18, 2017 |
| Grant date | Jan 28, 2020 |
| Priority date | — |
| Expiry date | Apr 18, 2037 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2258/0283
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Generally, the present invention relates to the selective removal of divalent sulfur oxyanions (e.g., sulfate) from an aqueous solvent using an anion exchange resin. More particularly, this invention relates to regenerative processes for the selective removal and recovery of sulfur dioxide from a source gas using an aqueous absorption medium in which an anion exchange resin is used to selectively remove divalent sulfur oxyanion impurities accumulating in the recirculating aqueous absorption medium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.