Selection of diaphragm electrolyzers
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This post was last edited by sunjl1981 on 2013-1-6 at 19:50. I’m facing a problem now: I plan to use diaphragm electrolysis to produce 30% liquid caustic, at a rate of 30 tons per day (not on a percentage basis). What size electrolyzer do I need? How can balance be achieved between the hydrogen and chlorine produced by electrolysis, which result in the formation of hydrochloric acid as a by-product? # ， ， &
It is best to use a Type 30 metal anode electrolyzer; there are also many companies that offer used equipment. The Type 16 isn’t very cost-effective.
For Type 30 metal anode electrolyzers, with the existing technologies of extended anodes and active cathodes, ten units are sufficient. The balance of the by-product hydrochloric acid depends on market demand and internal usage.
Personally, I think the active cathode does not perform very well; it is simply porous nickel used to increase the electrode surface area, thereby reducing the actual current density and consequently lowering the cell voltage. The new type of active cathode does work well, but after about two years, when the porous nickel gets clogged with impurities, the cell voltage actually increases, thus losing the purpose for which the active cathode was designed. It is recommended to use a modified diaphragm to expand the anode, along with a type 30 cell. This post was last edited by yzhms on 2009-2-11 at 13:12.]
It is most cost-effective to use Type 30 cells with modified membranes and expanded anodes
Everyone is using ion-exchange membrane electrolyzers these days, hehe:lol :lol
Type 30 cell, expanded anode modified membrane. The current can reach up to 66,000 A. Feel free to contact me if you’re interested!