Effect of chlorate on the operation of ion membrane electrolyzer
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This post was last edited by sunjl1981 at 2013-1-6 20:18! Due to the market downturn, our diaphragms were forced to stop production. Since we have been supporting the production of diaphragms and ion membrane devices. Due to the shutdown of the diaphragm, the chlorate and sulfate radicals accumulated in the ion membrane electrolysis section. Fortunately, we have barium chloride treatment for sulfate radicals. However, for chlorate, we have never had a decomposition tank treatment device. So now the chlorate out of our electrolytic cell has reached about 8 to 10 grams per liter. In the past, when our diaphragm was in operation and supporting production, it was only about 1 gram per liter! Here I would like to ask you what impact does the increase in chlorate accumulation have on the operation of the electrolyzer? I hope everyone will not be ashamed to teach you! ! # , , &
It mainly affects the concentration of the salt water and the decomposition when acid is added during the refining process, polluting the air and causing free chlorine in the salt water.
In addition, if there are high requirements for alkali quality, when the chlorate content of the incoming brine is greater than 10g/l, the salt content (chlorate) in the alkali will increase significantly. If it is a repolarization tank of Asahi Kasei or Beihua Machinery, it is effective to add salt water into the tank and add acid.
Influence: The concentration and saturation of salt water increases and the side reactions of the battery have a greater corrosion impact on the gaskets of the battery. The current efficiency increases the load of the dechlorination system. It is not enough to add acid to the battery alone. A chlorate decomposition tank is necessary, which has a greater impact on the quality of the finished alkali.
Can you explain in detail how the excessive chlorate in the incoming brine affects the salt content in the finished alkali? That is, how does the high chlorate in the salt water entering the tank affect the salt content in the catholyte?
What are the specific hazards of chlorate to electrolyzers? ? http://bbs.hcbbs.com/viewthread.php?tid=372233
Corrosion to the battery and increased acid consumption