摘要
针对用户现场的离子膜电解槽运行情况反馈,离子膜的寿命周期并未达到预期。从电解槽运行的各项指标进行分析,找到离子膜破损的主控因素,运行中严格控制可保证离子膜寿命。采用计算流体力学进行瞬变计算,对比计算软件进行数据斧正,结合现场测量数据,从氯气浓度、压差、温度等方面分析。结果显示,气体随着体积分数的增加,此处对离子膜产生较大冲击,独立的正向压差及反向压差实验,反应出压差对膜破损有规律性破坏。温度伴随着电流密度的提升而升高,可得到接近膜运行上限的温度阈值,根据临介值的指标进行实际工况调控。
The life cycle of the ion-exchange membrane did not meet expectations,according to the user’s feedback of ion-exchange membrane electrolyzers operation.In this paper,analysis of the operation of the electrolytic cell aim to find the main reason for ion-exchange membrane damage.Then strict control of the operation of indicators can guarantee the life of ion-exchange membrane.Use the method of transient calculation,compared with the software calculation data,combined with chlorine concentration,pressure,temperature,etc.The calculated results show that the gas has a greater impact on ion-exchange membrane as the volume fraction increases.Positive pressure difference and reverse pressure difference experiment reflect the regular effect of pressure difference on ion-exchange membrane.For the temperature increases as the current density improves,it can get the threshold of the upper limit of the ion-exchange membrane operation.Regulate the actual conditions according to the results obtained.
作者
乔霄峰
郭瑾
QIA;GUO Jin(Bluestar(Beijing)Chemical Machinery Co.,Ltd.,Beijing 100176,China)
出处
《中国氯碱》
CAS
2019年第3期8-11,共4页
China Chlor-Alkali
关键词
离子膜
气体浓度
压差
温度
ion-exchange membrane
concentration
pressure
temperature
