Help: How to detect a leak in a chlorine liquefier (in the case of minor leaks)
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Our plant’s chlorine liquefier uses a horizontal shell-and-tube cooler, with chlorine flowing through the tube side and frozen calcium chloride brine flowing through the shell side. The biggest concern at present is the leakage of calcium chloride solution into the liquid chlorine system (chlorine pressure: 0.14 ~ 0.17 MPa)； The pressure of calcium chloride is <0.15 MPa, with water supply under control. I’m not sure what the signs would be if chlorine leaks into the calcium chloride solution or if the calcium chloride solution leaks into chlorine, in order to take preventive measures. Are there any relevant information or cases available on this topic? Thank you all, experts.
I really don’t know what effective methods there are either; all I can do is give the topic a like! I hope some expert can come up with a solution
The pressure difference between the two is not significant, which facilitates the identification of problems. Chlorine dissolves in calcium chloride solution, and the final reaction takes place in the calcium chloride storage tank. Chlorine has a distinct odor, and even a slight scent can be detected, allowing for quick detection of leaks in the heat exchanger.
Now, the liquefaction of chlorine has progressed to using Freon as a refrigerant, and further improvements are needed upstairs.
Regularly monitor changes in free chlorine in calcium chloride to make judgments
Is it possible to monitor the pH value online? I think the focus should not be on detecting leaks, but rather on preventing them from occurring. 1. Is the moisture content in chlorine satisfactory? 2. The equipment should be regularly inspected and replaced on a periodic basis.
Tests show that pH is not suitable, but free chlorine can be measured. We plan to install an online ORP meter; of course, the process might be changed in the future
It’s better to convert it into a Freon unit – it offers higher reliability and safety!