乙撑亚胺法合成牛磺酸的工艺研究

The Process of Preparation of Taurine from Ethylenimine

研究了乙撑亚胺法合成牛磺酸的方法:以乙醇胺碱性条件合成乙撑亚胺,乙醇胺硫酸酯与氢氧化钠配比化学计量比为1:1.20最佳,反应温度110℃～120℃;起始的乙醇胺硫酸酯与亚硫酸氢铵配比为1:1.15,乙撑亚胺与亚硫酸氢铵开环反应控制温度在40℃以下,时间为1～1.5 h,pH为8左右。

The synthesis of taurine from ethylenimine is introduced. The optimization reaction conditions are： the stoichiometric ratio of monoethanolamine sulfate and sodium hydroxide 1： 1.2, the reaction temperature 110℃ ～120 ℃, the stoichiometric ratio of monoethanolamine sulfate and ammonia hydrogen sulfite 1： 1.15. While for the ring-opening reaction between ethylenimine and ammonia hydrosulfite, the reaction conditions are： the temperature below 40 ℃, reaction time 1～1.5 h, pH 8 or so.