What type of membrane is best for use in chlorine process tanks?
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This post was last edited by sunjl1981 on 2013-1-6 at 21:43. Our company uses Asahi Kasei electrolytic cells, which come in both forced-circulation and natural-circulation types, as well as high-density and standard versions; all of them utilize Asahi Kasei’s membranes. We are currently installing cells for chlorine processing, and we’re wondering what kind of membrane would be best for use in such cells – whether it should be Japanese or American-made. This post was last edited by limingshuguang on 2008-9-14 at 19:55. ] # + + . hcbbs
Currently, there are three manufacturers of membranes: Asahi Glass, Asahi Kasei, and DuPont. All three types of membranes can be used in any ion exchange membrane cell, but the key factors are the quality of the brine and the process conditions. I recommend consulting with a chlorine engineering specialist to determine which type of membrane is suitable; additionally, it’s better to choose a membrane that is well-understood.
It is best to use Asahi Glass membranes, as Asahi Glass has a close technical partnership with chlorine process tanks
Based on the operating conditions of our factory, I personally think Asahi Glass is better.
From an energy-saving perspective, Nippon Glass’ membranes are superior, with a cell voltage per unit that is about 20-30 mV lower than that of other similar membranes; however, in terms of impact resistance, DuPont’s 982 membrane is better. If the quality of the brine used by your company is unstable, it is recommended to use DuPont membranes.
DuPont 982 is the best choice; we have been using it for 5.5 years now
Generally, films from DuPont and Asahi Glass are used.
We have been using DuPont membranes; we’ve used N982, N2010, and N2030, but N2010 seems to be the best option – it offers strong resistance and a low cell voltage. The only drawback is that the purity of chlorine is not very high, at only 98%–98.5%.
Personally, I only know that there are three major manufacturers of ion exchange membranes currently: Asahi Glass, Asahi Kasei, and DuPont. As for the characteristics of each brand, I’m not qualified to comment since I haven’t made any comparisons.