pH value of fresh brine in the electrolyzer
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This post was last edited by sunjl1981 on 2013-1-6 20:10. Question: What are the reasons for the abnormalities in the pH value of the dilute saltwater in the electrolyzer? What measures should be taken? I hope you can offer some advice; thank you! :handshake Last edited by yzhms on 2009-3-13 14:26 in this post ] # ， ， &
Could the original poster describe the abnormal situation?
In the case of abnormal pH values, first check whether there is a problem with the instruments; then examine the amount of acid added or the acidity levels at the inlet and outlet. Conduct repeat analyses, check the condition of the ion exchange membrane for any leaks, and ensure that the instrument circuits are functioning properly. This post was last edited by yzhms on 2009-3-13 at 14:26
It is either too high or too low; in different situations, analysis is carried out to identify the reasons. First, it is necessary to rule out interference from instruments and analyses to determine whether there is indeed an abnormal condition. If it’s at a low level, is it because too much acid has been added? ； Is the level too high because less acid was added, or is it due to a high concentration of the anode solution exiting the tank? This kind of situation usually occurs at the beginning of operation. It does not occur during normal production processes. Regarding this issue, it would be better if the original poster provided some additional details first, after which everyone can proceed with further discussion.
Reasons for abnormalities in the pH value of the dilute brine in the electrolyzer, and corresponding measures: 1. Excessive or insufficient acid addition – adjust the flow rate. 2. Changes in acid concentration or substandard quality – adjust the flow rate after analysis. 3. Changes in the flow rate of pure water used for adding acid – adjust the amount of acid promptly. 4. Changes in the flow rate of the circulating brine – adjust the amount of acid promptly. 5. Changes in the flow rate of the concentrated brine fed into the electrolyzer – adjust the amount of acid promptly. 6. Fluctuations in the pH value of the concentrated brine fed into the electrolyzer – adjust the amount of acid promptly. 7. Too rapid changes in current level – adjust the amount of acid promptly. 8. Membrane leakage – stop operation and replace the membrane. 9. During initial startup – adjust the amount of acid promptly. 10. Incorrect readings from instruments – calibrate the instruments