Ion membrane service life
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This post was last edited by sunjl1981 on 2013-1-7 00:15. Our company’s ion exchange membranes have been in use for 5.5 years; I’d like to hear from colleagues about their experiences. # hcbbs
Factors affecting the service life of ion exchange membranes: 1. Type of membrane (manufacturer) 2. Model of the membrane 3. Quality of brine 4. Current density 5. Number of start-up and shutdown cycles 6. Effectiveness of polarization current application 7. Type of electrolyzer (manufacturer) 8. Model of the electrolyzer 9. Effectiveness of interlock systems 10. Installation quality 11. Service life of the electrolyzer
Generally, it is two to three years.
:Lol, there aren’t many of these around the country – DuPont 982 chlorination tanks. There’s also one tank using DuPont 2010; it’s been in use for over 4 years now, and I find it hard to believe.:victory:
5.5 years should be sufficient; the typical lifespan is 3 years. Given the same quality, what matters most is the operation and stability of the system. The lifespan of Asahi Glass membranes differs in Japan and in China – they last much longer in Japan. We also used Asahi Glass membranes for 4.5 years in the first phase.
Whether the membrane needs to be replaced is determined by the cell voltage and the efficiency of the electrolyzer; the membrane may last for 3 to 5 years, but if voltage loss and efficiency become unacceptable, it may need to be replaced quite soon.
The key is to check the current operating parameters of the cell – what are the cell voltage and current efficiency?
The service life of an ion exchange membrane is not determined by whether it can still be used; rather, it is determined by the power consumption per ton of alkali produced. (The operating conditions of ion membranes mainly depend on the amount of impurity ions deposited per unit area in the membrane)
1# Lushan: Is your friend a manufacturer from Shandong? Which brand of ion membrane are you using? Has the entire cell been in use for five and a half years? It’s not easy to be able to use this year. It’s time to replace the membrane. What is your current power efficiency, and what is the cell voltage? I hope the original poster will upload the relevant data for everyone to discuss! It’s hard for all of us to answer such casual remarks, isn’t it?