Method and system for removing impurities out of taurine mother liquor and taurine mother liquor recovery
US11459294B2 · kind B2 · utility
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2References
12Claims
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Key dates
| Filing date | Aug 31, 2020 |
| Grant date | Oct 4, 2022 |
| Priority date | — |
| Expiry date | Aug 31, 2040 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C309/14
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method for removing impurities from a taurine mother liquor and recovering the taurine mother liquor. The method is used in an ethylene oxide production process for taurine. The last mother liquor of taurine is ion-exchanged through an anion exchange resin; then the anion exchange resin is eluted and regenerated with alkaline solution, and the eluate is collected. The eluate is subjected to ammonia mixing treatment, and the treated mother liquor is generated after the impunity is removed from the eluate by solid-liquid separation. The treated mother liquor can then be returned to the ammonolysis step of taurine production.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.