双极膜电渗析法制备巯基乙酸的应用研究  

Study on the preparation of thioglycolic acid by bipolar membrane electrodialysis

作　　者：张委 张莉[2] 谢永刚 康巧能 李明阳 刘学良 娄玉峰 ZHANG Wei;ZHANG Li;XIE Yonggang;KANG Qiaoneng;LI Mingyang;LIU Xueliang;LOU Yufeng(Key Laboratory of Charged Polymeric Membrane Materials,Weifang 261061,China;Weifang Vocational College,Weifang 262737,China;Key Laboratory of Marine Fine Chemicals of Shangdong Province,Weifang 262737,China;Shandong Tianwei Membrane Technology Co.,Ltd.,Weifang 261061,China)

机构地区：[1]山东省荷电高分子膜材料重点实验室,潍坊261061 [2]潍坊职业学院,潍坊262737 [3]山东省海洋精细化工重点实验室,潍坊262737 [4]山东天维膜技术有限公司,潍坊261061

出　　处：《膜科学与技术》2021年第5期114-120,138,共8页Membrane Science and Technology

基　　金：山东省重大科技创新工程项目(2019JZZY010511);潍坊职业学院首届博士科研基金项目(潍职院教【2021】5号)。

摘　　要：采用两隔室双极膜电渗析装置,研究了由巯基乙酸钠制备巯基乙酸的可行性.实验结果表明,利用双极膜电渗析技术能够在不添加其他物质的条件下,将巯基乙酸钠转化成高附加值的巯基乙酸和氢氧化钠,避免了副产钠盐,同时生成的氢氧化钠可以回用,达到资源化利用和清洁生产的目的.巯基乙酸钠的转化率达到98%以上,电流效率为67.2%,产酸能耗为665.8kW·h/t.相比于传统生产方法,本方法简化了巯基乙酸的生产工艺流程,有效降低了生产成本,提高了巯基乙酸收率.In this paper,the feasibility of thioglycolic acid from thioglycolate sodium feed with a twocompartment bipolar membrane electrodialysis(BMED)device was invostigated.It was found that sodium thioglycolate could be converted into high value-added thioglycolic acid and sodium hydroxide without adding other addtives and sodium salt by-products.At the same time,the production of sodium hydroxide can be reused for the purpose of resource utilization and green production.The conversion rate of sodium thioglycolate was over 98%,the current efficiency was 67.2%,the energy consumption of acid was 665.8 kW·h/t.Comparing with the traditional method,the BMED technique can simply the production process,reduce the production cost and improve the yield of thioglycolic acid.

关 键 词：双极膜 电渗析 巯基乙酸钠 巯基乙酸 

分 类 号：TQ028.8[化学工程]