双极性膜电渗析技术在维生素C生产中的应用研究

Application of bipolar membrane electrodialysis in production of vitamin C

报道了双极性膜电渗析取代现行工艺中ＶｃＮａ转化成Ｖｃ的酸化过程的研究．ＶｃＮａ的转化率达９９％，ＶｃＮａ溶液转化的收率达９７％，平均电流效率达７０％，平均耗电０．９ｋＷ·ｈ／ｋｇＶｃ，制得的粗Ｖｃ产品符合工业生产要求．

A new technology,bipolar membrane electrodialysis (BME),was developed to convert VcNa to vitamin C in the production of vitamin C.The coverting factor of VcNa is more than 99% and the yield of vitamin C is up to 97% in acidation process.The average efficiency of electric current is 70%.The power cost is 0.9 kW·h per kg Vc.The quality of the products of vitamin C after BME comply with the production desire.