Reasons for the increase in the pH value of the jacket water in the hydrogen chloride synthesis furnace
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This post was last edited by sunjl1981 on 2013-1-6 at 23:08. During operation, it was observed that the pH value of the water in the jacket of the hydrogen chloride synthesis furnace increased. The pH value of the soft water supplied was within acceptable limits, but after some time of operation, an increase in the pH value of the hot water was detected; it has now risen above 9. After the liquid level in the hot water tank dropped, more soft water was added, and its pH value was also within acceptable limits. Hey experts, what causes this? # + + .
Why isn’t anyone helping to answer? The cause still hasn’t been identified yet
This may be related to the water treatment agent added. Some water treatment agents, particularly organic carboxylates, may become alkaline during degradation. Additionally, to prevent corrosion, the pH value of water quality is also kept slightly alkaline.
You might try an experiment: heat a cup of pure water, and its pH will also be alkaline. It may be because the increase in temperature leads to an increased degree of ionization of water. It’s also a guess.
This post was last edited by jxz001 on 2011-8-4 at 16:00. It is related to the evaporation and loss of water. The added pure water still contains trace amounts of salts, such as impurity ions like calcium and magnesium ； As the water evaporates, the impurity ions remain, leading to concentration; once this reaches a certain level, the water containing calcium and magnesium ion salts becomes alkaline.