Method and system for preparing high-purity taurine and salt
US11578037B2 · kind B2 · utility
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3References
11Claims
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Key dates
| Filing date | Apr 21, 2021 |
| Grant date | Feb 14, 2023 |
| Priority date | — |
| Expiry date | Apr 21, 2041 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C303/44
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A method for preparing high-purity taurine and salt by reacting ethylene oxide with bisulfite to generate isethionate, performing an ammonolysis reaction on the isethionate in combination with ammonia and a metal salt, evaporating the reaction solution and subjecting the concentrated solution to ion exchange to obtain an adsorption solution, extracting taurine from the adsorption solution, eluting adsorbed metal cations from the ion exchange system by an acid, and separately collecting the eluate containing a salt.
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