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METHOD FOR CYCLICALLY PREPARING TAURINE FROM HYDROXYETHYL SULFONIC ACID ALKALI METAL SALT AND VINYL SULFONIC ACID ALKALI METAL SALT.
METHOD FOR CYCLICALLY PREPARING TAURINE FROM HYDROXYETHYL SULFONIC ACID ALKALI METAL SALT AND VINYL SULFONIC ACID ALKALI METAL SALT.
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机译:从羟乙基磺酸碱金属盐和乙烯基磺基磺酸碱金属盐循环制备牛磺酸的方法。
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摘要
Disclosed is a method for cyclically preparing taurine from a hydroxyethyl sulfonic acid alkali metal salt and a vinyl sulfonic acid alkali metal salt. In the method, by-products of an ammonolysis reaction, i.e., disodium taurate and trisodium taurate, are continuously converted into sodium taurate, so as to achieve efficient production with an overall yield over 95%. Pure disodium taurate and trisodium taurate are prepared by using diethanolamine and triethanolamine as raw materials and separately subjecting them to an ammonolysis reaction to obtain a mixture of sodium taurate, disodium taurate and trisodium taurate.
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