固定床电化学反应器内电解合成丁二酸的研究  

Electro-Synthesis of Succinic Acid in a Packed Bed Electrochemical Reactor

作　　者：赵峰鸣[1] 侯庆龙 罗忠林 郭利巧 马淳安[1] ZHAO Feng-ming HOU Qing-long LUO Zhong-lin GUO Li-qiao MA Chun-an(State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310032, China)

机构地区：[1]浙江工业大学化学工程学院绿色化学合成技术国家重点实验室培育基地,浙江杭州310032

出　　处：《高校化学工程学报》2016年第5期1104-1111,共8页Journal of Chemical Engineering of Chinese Universities

基　　金：国家重点基础研究发展计划项目(2012CB722604);浙江省大学生科技创新活动计划暨新苗人才计划(2015R403074)

摘　　要：设计并制作了一种固定床电化学反应器用于电解合成丁二酸,通过改变固定床层中钛球的直径和填充个数以调控不同的阴极电流密度,对在该反应器内电解合成丁二酸的性能进行评价。结果表明,当固定床层中填充钛球的直径为8 mm,填充个数为133个,阴、阳极电流密度之比为1:4时,选取阳极电流密度1000 A×m^(-2),投入原料马来酸酐质量分数9.8%,硫酸质量分数5%,电解温度为50℃,可获得最佳的实验结果:平均还原收率可达93.7%,电流效率95.0%,槽电压范围2.6~3.0 V。与传统的箱式电化学反应器相比,平均还原收率可提高4.4%,电流效率提高3.5%,时空产率约为后者的1.6倍。A packed bed electrochemical reactor was used for succinic acid synthesis, and its performance wasevaluated by applying different current densities adjusted by changing diameter and amount of titanium pellets.The results indicate that optimum performance can be achieved when using 133 titanium pellets with diameterof 8 mm, current density ratio of ic ： ia = 1：4, anodic current density of 1000 A.m-2, initial maleic acid weight ofpercent 9.8%, initial sulfuric acid weight percent of 5% and electrolysis temperature of 50℃. Average reductionyield of 93.7%, current efficiency of 95.0% and cell voltage range of 2.6-3.0 V can be obtained under suchconditions. Compared with traditional tank type electrochemical reactors, the packed bed electrochemicalreactor can increase average reduction yield of 4.4%, current efficiency of 3.5% and space-time yield of 1.6times.

关 键 词：固定床 电化学反应器 丁二酸 电解合成 

分 类 号：TQ151.42[化学工程—电化学工业]