High-yield circular production method of taurine
US10071955B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 16, 2017 |
| Grant date | Sep 11, 2018 |
| Priority date | — |
| Expiry date | Aug 16, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C303/44
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The high-yield circular production method of taurine includes the following steps: S1, ethylene oxide reacts with sodium bisulfite solution to generate sodium hydroxyethyl sulfonate; S2, sodium hydroxyethyl sulfonate obtained in S1 is subjected to ammonolysis reaction in ammonia, and ammonia gas is recycled through flash evaporation upon completion of the reaction; S3, a reaction solution obtained after flash evaporation in S2 is sent to pass through an acidic cation exchange resin column, a material liquid containing taurine is collected, the inactivated resin column is subjected to regeneration with sulfur dioxide or carbon dioxide aqueous solution, and an eluent acquired during regeneration can be recycled directly or recycled after treated by sulfur dioxide; S4, the material liquid collected in S3 is subjected to post treatment to acquire taurine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.