含盐乙二醇溶液电渗析脱盐工艺研究  

Research on Electrodialysis Desalination Process of Salt-containing Ethylene Glycol Solution

作　　者：李鹏飞 陈青柏 王建友[1] 曲广 王子明 LI Pengfei;CHEN Qingbai;WANG Jianyou;QU Guang;WANG ZiMing(Tianjin Key Laboratory of Environmental Technology for Complex Trans-Media Pollution,College of Environmental Science and Engineering,Nankai University,Tianjin 300350,China;China Ship Design&Research Center Co.,Ltd.,Dalian 116001,China)

机构地区：[1]南开大学环境科学与工程学院,天津市跨介质复合污染环境治理技术重点实验室,天津300350 [2]中船重工船舶设计研究中心有限公司,辽宁大连116001

出　　处：《水处理技术》2021年第10期71-74,共4页Technology of Water Treatment

基　　金：国家重点研发计划项目(2017YFC0404003,2016YFC0400707-2);中央高校科研业务费专项资金(南开大学,20180017);天津市生态环境治理科技重大专项(18ZXSZSF00050);天津市科技支撑计划重点项目(19YFZCSF00760)。

摘　　要：针对陆域油气体开采过程中产生的乙二醇盐溶液,设计了处理规模为100 L/h的3级串联电渗析连续化脱盐工艺,在不同操作电压条件下分析了系统脱盐率、能耗、乙二醇损失率以及各级电渗析脱盐率的变化特性。结果表明,操作电压为80 V时,脱盐率可达到90%,能耗仅为0.792 kW·h/m^(3),此时乙二醇损失率为0.51%。操作过程中当前2级电渗析以较大操作电压运行时,可通过适当降低第3级电渗析的操作电压以减少能耗。Aiming at the ethylene glycol salt solution produced in the process of oil gas exploitation on land, a three-stage series electrodialysis continuous desalination process with a treatment scale of 100 L/h was designed. The characteristics of desalination rate, energy consumption, ethylene glycol loss ratio were analyzed under different applied voltages. The results showed that, when the operating voltage was 80 V, the desalination rate reached 90%and the energy consumption was only 0.792 kW h/m^(3), while the ethylene glycol loss ratio was 0.51%. When the operating voltage of the first two stages of electrodialysis was larger, the operating voltage of the third stage of electrodialysis could be reduced appropriately to reduce energy consumption.

关 键 词：再生与回收系统(MRU) 乙二醇脱盐 电渗析 

分 类 号：X741[环境科学与工程—环境工程]