Cost of membrane operation and the service life of membrane were calculated by mathematics equation.F4203 membrane of NCS electrolyzer should be changed step by step after four or four and half years.

• 运用数学方程计算出膜运行费用与膜的使用时间,认为NCS电槽F4203膜运行四年或四年半后则应考虑逐步更换。