Why shouldn’t the temperature of the electrolytic cell rise too quickly?
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This post was last edited by sunjl1981 on 2013-1-6 at 19:56. Why cannot the current be increased too quickly when starting to increase it in Asahi Kasei’s electrolyzers in Japan, especially when the cell temperature is low? What consequences might rising too quickly cause? # ， ， &
Special care must be taken when operating the new membrane and new gaskets; the process must start slowly. A stop is necessary before reaching 5KA in the forced circulation tank, to check the voltage of any abnormal units, as well as to verify the status of power supply and membrane leakage. At around 1KA in tanks with high electric density, a stop is also required for inspection. At 4KA, it is necessary to check the voltage, concentration, and pressure difference across all tanks to ensure stability. When increasing the current again, the normal rate is 1 KA/30 minutes; for new membranes, it is recommended to increase the current by 1 KA after one hour. When the tank temperature is at 80 degrees, it is necessary to carefully check the condition of the gaskets, and one should not rush to increase the current in order to prevent the gaskets between the tank components from shifting and causing accidents.
When increasing the current, it is necessary to take into account the tank temperature; this is also a form of protection for the membrane. When the tank temperature is low, increasing the current too rapidly can cause the membrane to overheat and become overloaded, leading to damage to the membrane.
The temperature should not be increased too quickly: the main concern is that the rubber gaskets in the electrolyzer might get damaged, leading to leaks; there’s also the issue of the membrane – if the temperature rises rapidly, so does the temperature of the membrane, which can cause it to overheat and form bubbles, resulting in irreversible damage to the membrane! Also, the oil pressure will rise rapidly, and failure to address this promptly can cause damage to the battery cell plates.
1. If the current in the electrolyzer is increased too quickly, a surge in current will occur, which may lead to arcing in the electrolyzer. 2. When there is a surge in current, the temperature rises rapidly. 3. It affects the coating of the electrolyzer, resulting in a shortened lifespan. 4. It affects the lifespan of the ion membrane, causing bubbling and irreversible shrinkage of the membrane. Among them, the first one is the most dangerous
Generally, it prevents local overheating, which is beneficial for the protective film
Possible consequences of too rapid rise in the electrolyzer cells of Asahi Kasei: 1. It can lead to improper mixing of the saltwater fed into the cells. 2. It can result in improper concentration of the saltwater exiting the cells. 3. It can cause abnormal levels of alkali in the saltwater leaving the cells. 4. It may lead to excessive cell temperature, resulting in bubbling of the membrane. 5. It can cause excessive oil pressure. 6. It can result in improper pH levels of the saltwater exiting the cells. 7. It can lead to unstable chlorine gas pressure. 8. It can cause unstable hydrogen gas pressure. 9. It can result in unstable pressure differences. 10. It can cause unstable liquid levels in the storage tanks
The cell temperature is maintained at a constant pressure below 70°, while constant current operation is used above 70°.
Because at lower tank temperatures, if the current increases too rapidly, causing the membrane to overheat and become overloaded, this can easily lead to damage to the membrane. Additionally, a rapid increase in current results in large fluctuations in gas pressure, which are difficult to control and may cause the system to stop operating.