Solutions for liquid chlorine, sodium hypochlorite, and red color
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Our factory sells a large volume of liquid chlorine, and the sodium hypochlorite produced by pressure relief from the vapor tanks is red in color. Have you encountered a similar phenomenon as well, Haiyou? Can it be solved? Thank you!
If there is no problem with the chlorine at the source, it is recommended to replace the chlorine pipe leading to the sodium hypochlorite unit with one made of fiberglass or CPVC. If making such a change is not feasible, install a nitrogen filling device after the pressure valve on that pipe, so that nitrogen is maintained in the system regardless of whether chlorine is present or not.
If the color is red, it is usually due to the presence of iron ions. Our factory used to produce sodium hypochlorite, and we encountered cases where it turned red. It was later found that the cause was damage to the PO lining of the waste chlorine pipeline; when a large negative pressure occurred in the system, water vapor entered the waste chlorine pipeline, leading to corrosion of the pipeline. Everything was fine after replacing the pipe.