How to prevent chloramine red staining
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This post was last edited by sunjl1981 on 2013-1-6 at 23:11. The hypochlorous acid produced by our company is red in color, and it’s difficult to sell it; this is a real problem. The reason for this is the presence of iron particles in the pipelines, which are carried in by large amounts of chlorine gas during startup and shutdown processes. What improvements can be made in terms of process design and operation to prevent the hypochlorous acid from turning red? -
The material used for the chlorine pipes leading to the chlorine removal tower in the electrolysis process is fiberglass-reinforced plastic.
Before chlorine enters the decontamination tower, a chlorine water seal is added to ensure that the chlorine passes through washing before entering the tower.
A red color of sodium hypochlorite is not necessarily caused by a high iron content; excessive temperature during the absorption process can also result in a red appearance of sodium hypochlorite. It is essential to keep the absorption temperature below 30 degrees Celsius during this process.
Reply to 4# make: First, ensure that there are no trivalent iron ions in the pipeline, and then control the absorption temperature
The pipe material cannot be iron; PVC will do.
Adding a buffer tank before the accident tower should work.
First of all, it is necessary to keep the cycle temperature below 25 degrees； Check the amount of acid sludge in the liquid chlorine storage tank ； Add a water seal before entering the pest control area. This issue has been basically resolved
The pipe material should be PVC or fiberglass reinforced plastic; the temperature of the absorbent liquid must be kept below 40 degrees. It is necessary to check for the presence of acidic sludge, and filters or water seals should be installed.