草酸电解合成乙醛酸连续化工艺研究

电化学（中英文） ›› 2005, Vol. 11 ›› Issue (4): 425-429.

草酸电解合成乙醛酸连续化工艺研究

胡晓慧;剡翔飞;苏玉忠;李军;李清彪;

厦门大学化学化工学院化学工程与生物工程系,厦门大学化学化工学院化学工程与生物工程系,厦门大学化学化工学院化学工程与生物工程系,厦门大学化学化工学院化学工程与生物工程系,厦门大学化学化工学院化学工程与生物工程系福建厦门361005,福建厦门361005,福建厦门361005,福建厦门361005,福建厦门361005

收稿日期:2005-11-28 修回日期:2005-11-28 出版日期:2005-11-28 发布日期:2005-11-28

A Continuous Operation for Electroreduction of Oxalic Acid to Glyoxylic Acid

HU Xiao-hui,YAN Xiang-fei,SU Yu-zhong,LI Jun~

(*),LI Qing-biao(Department of Chemical & Biochemical Engineering,Xiamen University,Xiamen 361005,China

Received:2005-11-28 Revised:2005-11-28 Published:2005-11-28 Online:2005-11-28

摘要/Abstract

摘要： 针对传统草酸电解生产乙醛酸工艺只能间歇循环的缺陷,本文提出模拟连续化实验方案,并分别设计阴极冷却反应器和阴极冷却固定床反应器,探讨连续化实验的可行性.另外还考察了草酸饱和度和温度工艺参数对反应的影响.实验表明,保持草酸过饱和和利用变温操作可在反应停留时间(30m in)内于连续化反应过程中得到分别含有3.76%和3.66%乙醛酸的反应液,因此阴极冷却固定床反应器可望实现草酸电解还原乙醛酸的连续化生产.

关键词: 草酸电解法, 阴极冷却固定床, 连续化

Abstract: A simulative-continuous-operation approach was proposed to study the continuous operation for electroreduction of oxalic acid to gloxylic acid using a packed bed reactor and a parallel reactor with cooled cathode in order to solve the low productivity problem in current state by using traditional reactor.The effects of the concentration of oxalic acid and temperature on this process were also studied.Results showed that,after 30min of the reaction(residence time),the mass fraction of the produced glyoxylic acid in the catholic solution could reach 3.76% and 3.66% with respect to a saturated oxalic acid method and a step-temperature decreasing method.From this study,we conclude that it is feasible to produce glyoxylic acid through the three-dimensional electrode reactor under a continuous operation.

Key words: Oxalic acid, Glyoxylic acid, Cooled cathode, Packed bed, Continuous operation

中图分类号:

TQ151

胡晓慧;剡翔飞;苏玉忠;李军;李清彪;. 草酸电解合成乙醛酸连续化工艺研究[J]. 电化学（中英文）, 2005, 11(4): 425-429.

HU Xiao-hui,YAN Xiang-fei,SU Yu-zhong,LI Jun~. A Continuous Operation for Electroreduction of Oxalic Acid to Glyoxylic Acid[J]. Journal of Electrochemistry, 2005, 11(4): 425-429.

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链接本文: https://electrochem.xmu.edu.cn/CN/

https://electrochem.xmu.edu.cn/CN/Y2005/V11/I4/425