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US 9,850,200 B1Granted
Method for preparing taurine
AssigneeVitaworks IP, LLC
InventorSongzhou Hu
Life of this patent
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Abstract
There is disclosed a process for preparing taurine from alkali isethionate by reacting alkali taurinates in the solution of ammonolysis reaction of alkali isethionate with ammonium bisulfite or ammonium sulfite to obtain taurine and to regenerate alkali bisulfite or alkali sulfite, which is used to react with ethylene oxide to afford alkali isethionate.
Claims7
A process for producing taurine from alkali taurinate or a mixture of alkali taurinate, alkali ditaurinate, and alkali tritaurinate, comprising:
- (1) adding ammonium bisulfite, or ammonium sulfite, or their mixture to a solution of alkali taurinate or a mixture of alkali taurinate, alkali ditaurinate, and alkali tritaurinate to yield ammonium taurinate and a mixture of alkali sulfite and alkali bisulfite;
- (2) decomposing ammonium taurinate by heating and removing ammonia to yield taurine;
- (3) separating taurine by means of solid-liquid separation to provide a mother liquor containing a mixture of alkali sulfite and alkali bisulfite.
Dependencies are inferred from the claim text.