What impact does frequent current rise and fall have on electrolytic cells and ion membranes?
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This post was last edited by sunjl1981 on 2013-1-6 23:39 The electrolysis current in our factory rises and falls frequently, and the electrolysis workshop can no longer achieve stable production. Today, if the current is increased from 9,000 amps to 13,000 amps in 6 hours, how much impact will the frequent rise and fall of current on the electrolyzer and ion membrane? I hope you guys can enlighten me! ! ! # , , &
I have done an anode plate strengthening destruction experiment before, that is, under strong acidic conditions. The experiment proved that under the condition of frequent current rise and fall, the chlorine evolution potential of the anode rose very quickly, which may have damaged the anode coating. Occasional increases and decreases are not a big problem. Some units implement peak and valley flat electricity prices, which require the current to increase and decrease every day. This should have the greatest impact.
Frequent rise and fall of current will cause frequent changes in bath temperature, causing frequent changes in shrinkage/expansion of the membrane, which will cause wrinkles in the membrane. At the same time, pressure fluctuations of chlorine and hydrogen will inevitably occur during the process of rising and falling current, causing pinholes in the membrane. Frequent rising and falling currents have a great impact on the anode coating. In order to protect the film and electrode, the frequency of rising and falling currents should be reduced as much as possible. This post was last edited by limingshuguang on 2008-1-24 20:36 ]
No one can provide data on how big it is, but the impact is definitely there. Although we are now controlled by DCS or PLC and the control speed is very fast, it is impossible to achieve complete synchronization. For example: Fluctuations in differential pressure, pressure fluctuations, changes in liquid gas inside the polar chamber, changes in circulation volume, etc. At least when the load is increased, polarization, including solution polarization and electrode polarization, must increase instantaneously. No matter how fast the control system is, it is impossible to synchronize it. The impact of electric current on the electrode is also a kind of damage. The most important thing for the operation of the battery is stability, especially the current.