Changes in current efficiency of ion-exchange membrane electrolyzers
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This post was last edited by sunjl1981 on 2013-1-6 at 23:48. I would like to ask whether a decrease in current efficiency in ion-exchange membrane electrolyzers requires an increase in the amount of salt water fed in Which metrics will be affected by a decrease in current efficiency? # ， ， &
:(Someone please help analyze this.) . . . Is this question a bit childish?:L
The efficiency of electrodialysis decreases； Current loss increases. The solution is to strictly control the current so that it operates below the limit current ； Bring the fluid in each chamber into a turbulent state to enhance mixing of the liquid feed, and appropriately increase the temperature for electrodialysis of the liquid feed ； Polishing deposits are removed by regular acid cleaning, the addition of scale inhibitors, and electrode replacement ； Enhance the pretreatment of the material solution to minimize the introduction of impurities.
There are many reasons that can lead to a decrease in current efficiency, and it is necessary to analyze them based on specific circumstances: the properties of the membrane chosen, the structure of the electrolyzer, the concentration of (NaOH/NACL), the pH of the anode solution, the quality of the saltwater, the current density, the temperature and voltage of the electrolyzer... All these factors can have an impact on current efficiency. A decrease in current efficiency is directly affected by the concentration of alkalis, as well as the purity of chlorine and hydrogen. Please let me know if there are any mistakes! :)
The current efficiency has decreased, which proves that side reactions have definitely increased, thereby affecting the purity of the alkali, chlorine, and hydrogen.
A decrease in current efficiency indicates a decline in the performance of the coatings and membranes on the cathode/anode grids, and it has nothing to do with the amount of salt water fed in. A decrease in current efficiency affects power consumption, chlorine purity, and the quality of caustic soda.