Process for producing taurine from alkali taurinates

  • US RE48,354 E1
  • Filed: 04/21/2020
  • Issued: 12/15/2020
  • Est. Priority Date: 04/18/2014
  • Status: Active Grant
First Claim
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1. A process for the production of taurine from alkali ditaurinate or alkali tritaurinate, or their mixture, comprising,(a) adding an alkali hydroxide to a solution of alkali ditaurinate, or alkali tritaurinate or their mixture, to prepare a solution of dialkali ditaurinate, or trialkali tritauriante or their mixture,(b) adding an excess amount of ammonia to a solution of dialkali ditaurinate, or dialkali tritaurinate, or their mixture, and subjecting the solution to ammonolysis reaction to yield a mixture of alkali taurinates,(c) removing excess ammonia from (b) and neutralizing alkali taurinates with an acid to form a crystalline suspension of taurine, and(d) recovering taurine by means of solid-liquid separation.

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