甘氨酸的pH聚焦膜分离工艺

A Technology of pH Focus Membrane Separation of Glycine

在氯乙酸催化氨解甘氨酸的生产工艺中 ,利用甘氨酸与副产物氯化铵的物化性质差异 ,采用相分离结合 pH聚焦膜分离工艺取代传统的醇析工艺 ,得到甘氨酸和氯化铵 2种产品 .甘氨酸的相分离收率为90 % ,膜分离效率可以达到 97% .

During the production process of glycine from catalyzing of ammonolysis chloroacetic acid, according to the different physical-chemical properties of glycine and the by-product ammonia chloride,a technology of phase separation combining pH focus membrane separation was introduced.lt could take place the traditional methanol for alcohol precipitation. Glycine and ammonia chloride were got.The yield of glycine by phase separation could be 90%. The efficiency of membrane separation was 97%.