Control of acid addition to the electrolyzer
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The last edit to this post was made by sunjl1981 on 2013-1-7 at 00:16. How is the amount of acid added to the electrolyzer adjusted and controlled? What determines the amount of acid to add? What impact does an excessive (insufficient) amount of acid have on the electrolyzer? I hope everyone can offer some advice! Thank you here! :beauty: # hcbbs
The amount of acid added should be controlled based on the pH value; too much acid can damage the ion exchange membrane, while too little acid leads to a decrease in chlorine purity. The amount of acid required is primarily related to the membrane – if the membrane leaks, more acid needs to be added. In any case, acid is also required for dechlorination, so overall it has little impact on acid consumption.
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It is mainly controlled based on the pH value of the brackish water leaving the tank; there are online pH meters available. Additionally, too much acid cannot be added, as this will cause acidification and lead to permanent damage to the membrane.
It is mainly controlled based on the pH value of the brackish water exiting the tank; there are online pH meters available. Additionally, too much acid should not be added, as this will acidify the ion membrane and cause permanent damage to it, while too little acid will hinder the improvement of chlorine purity; therefore, an appropriate amount should be used
It is controlled based on the pH value of the brine leaving the tank; however, the sulfate content affects the pH value, and sometimes acidity is taken into account. The pH of the brine entering the tank can also be used as a reference. This post was last edited by yzhms on 2009-4-20 16:39.]
Based on the control of the pH value of the brine leaving the cell, adding too much of it leads to acidification of the ion exchange membrane, while adding too little hinders the improvement of chlorine purity and prevents effective reduction of side reactions
The amount of acid added is related to the current level and the pH of the saline solution; it is primarily used to protect the electrodes and neutralize hydroxide ions. The flow control valve for adding acid is connected in series with the current level, changing as the current does.
Generally, no acid is needed for the new membrane. The purpose of adding acid is to neutralize the hydroxide ions that penetrate from the cathode, reduce side reactions at the anode, improve or maintain the purity of chlorine gas, and protect the anode coating. When a decrease in current efficiency, abnormal cell voltage, or a drop in chlorine purity is observed, and membrane performance degradation or pinholes are suspected, increasing the amount of acid added can be considered. However, an excessive increase in dosage can also cause problems such as membrane acidification; therefore, strict monitoring and regular testing of the acidity at the inlet and outlet of the electrolyzer are important aspects of electrolyzer management.
It mainly involves tracking and analyzing the acidity of hydrochloric acid in the brine and fresh saltwater entering the system, with the acidity level not exceeding 0.15N.
3# Sister, I can’t open your post
It is mainly controlled based on the pH value of the brackish water exiting the tank