What is the purpose of adding hydrochloric acid to the feed saline?
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This post was last edited by sunjl1981 on 2013-1-6 21:44. What is the purpose of adding hydrochloric acid to the saltwater used as a feed? ， ， -
It neutralizes the hydroxide ions that migrate from the cathode, protects the anode, and improves the purity of chlorine gas.
Neutralizing hydroxide ions through the ion membrane improves current efficiency, helps to reduce the cell voltage, suppresses side reactions to increase chlorine purity, and protects the anode coating. However, with an excess of hydrochloric acid, hydrogen ions interfere with the passage of sodium ions through the ion membrane.
Purpose of adding acid: The purpose of adding acid to ion-exchange membrane electrolyzers is to neutralize the NaOH that permeates from the cathode chamber to the anode chamber, preventing side reactions and thus protecting the electrodes.
1 Neutralize hydroxide ions to improve the purity of chlorine. 2 Slow down the corrosion of the anode coating and extend its service life. 3 It can reduce the free chlorine content in the anode solution, which is beneficial for subsequent dechlorination processes
All of the above is correct, right, and excellent