Ion membrane leak testing method
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This post was last edited by sunjl1981 on 2013-1-6 at 23:46. Please discuss the methods for testing the integrity of membranes in various types of ion-exchange membrane electrolyzers, and provide details on how to conduct such membrane leak tests. # ， ， &
Hehe, I want to know too……
Does the pinhole leak detection method count? It’s included with chlorine engineering cells!:lol
I’m talking about pinhole leak testing; please share your thoughts on it
Our unit uses Asahi Kasei electrolysis cells, along with testing equipment designed for detecting pinholes; this equipment employs a rolling method on sponge samples. From the results obtained, it seems that very small pinholes cannot be detected. I’m curious to know how other units are doing
Typical electrolyzers are equipped with leak-testing devices, which are relatively simple in design. A electrode plate is placed on a leak-testing bed, an ion membrane that needs to be tested is placed on top of it, and then a frame used for leak testing is placed on the ion membrane; beneath this frame there is a mesh structure. All these components are fixed to the leak-testing bed to ensure that the connection surfaces remain sealed. Add a certain amount of pure water to the plate and frame, and introduce compressed air at the inlet of the electrode plates (note: the pressure of the compressed air should not be too high, otherwise it may damage the ion membrane). If no bubbles appear in the water, it means there is no leakage; if bubbles do appear, it indicates that there is a pinhole in that area
As you mentioned, if pressure is not controlled properly with this method, it can damage the membrane; therefore, this approach deserves further consideration.
Currently, we are using BITAC899, with membranes of types N2010 and N2030. After installation, they are tested using the leak detection equipment provided by the Japanese manufacturer, and it’s a very simple process
Our company is BITAC888, and the membrane we use is F8020. Why do you use DuPont membranes? Does the Japanese side allow the use of DuPont membranes? This post was last edited by limingshuguang on 2008-1-8 at 16:24