电渗析装置中布水槽/集水槽热效应

电渗析装置中布水槽/集水槽热效应 Thermal Effect of the Feed / Drain Channels in Electro-Dialyzer 彭政 PENG Zheng 1 first-author 王红萍 WANG Hongping 1 2 武汉大学资源与环境科学学院 武汉大学资源与环境科学学院 Hubei Provincial Collaborative Innovation Center for Water Resources Security Hubei Provincial Collaborative Innovation Center for Water Resources Security 水资源安全保障湖北省协同创新中心 水资源安全保障湖北省协同创新中心 School of Resources and Environmental Science,Wuhan University School of Resources and Environmental Science,Wuhan University 膜堆外电路的电流泄露是电渗析技术中无法回避的问题.膜堆外电路电阻由配水管/集水管电阻和布水槽/集水槽电阻组成,并且布水槽/集水槽部位是电渗析装置中最易发热变形的部位.本文针对两隔室结构电渗析装置建立了电路模型,根据对称电路规律进行了简化,得到了1×N阶电阻网络图,并运用基尔霍夫定律推导出流经配水槽/集水槽电阻r0处的电流Ik通项式.引入实际电渗析器测量电阻参数,计算得出了Ik基本规律,并基于Ik规律分析了布水槽/集水槽热效应.研究结果表明,膜堆最外侧隔板布水槽/集水槽受热变形风险最高;且当电渗析装置由实验室规模扩至工业规模时,隔板布水槽/集水槽的热效应更加明显;隔板几何特性参数r0/r1对隔板布水槽/集水槽热效应影响极大. The leakage current of external circuit is inevitable in electro-dialyzer. The resistance of external circuit is composed by the resistances of the feed / drain pipe and the feed / drain channels,which is the easiest to heat and deformation. In this paper,a circuit model is established in connection with two-compartment electro dialysis device,and the circuit model is simplified according to the law of symmetrical circuit,then a 1 × N order resistor network diagram is obtained. In addition,a formula of current Ikwhich flowed through the resistance r0 of the feed / drain channels is deduced by using Kirchhoff’s law. The resistance parameter calculation is measured introduction of the actual electro dialysis. It shows that the feed / drain channels is the easiest to heat and deformation in the outermost of membrane stack; Thermal Effect of the feed / drain channels is more obvious when electro dialysis device is expanded from laboratory scale to industrial scale. The geometric parameters r0/ r1 of the spacer has a great impact on thermal effect of the feed / drain channels. 电渗析 布水槽/集水槽 电流分布 放大效应 热效应 electrodialysis the feed / drain channels distribution of current amplification effect thermal effects 10.14188/j.1671-8836.2015.05.012 TQ028.74 湖北省环境保护专项资助项目（2011HB12） 2015-05-01 2021-03-31 5 61