Gentle experts, how is the chlorine ion content in water measured? ? ? What is the maximum level of chloride ions in cooling water before it causes problems...
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Gentle experts, how is the chlorine ion content in water measured? ? ? What is the maximum level of chloride ions in cooling water, in PPM, that will not cause corrosion on the surface of stainless steel? ? ?
The level is required to be kept below 25 ppm. The analysis of chlorides in water can be carried out manually, using a national standard method known as the coprecipitation enrichment spectrophotometric method for chlorides; alternatively, an automatic analyzer can be purchased for such analysis~~
The circulating water level isn’t that low; it’s not more than 1000, nor more than 700.
Chloride ions in circulating water can be determined by titration or by ion chromatography. The ion-selective electrode method is generally not recommended, as the accuracy and reproducibility of this method are not very good.
When austenitic stainless steel is used for heat exchange, the design recommends a concentration of 25 ppm for the circulating water; however, this level is rarely achieved in practice, with concentrations generally below 300 ppn, which is acceptable~~
We detect chloride ions using a spectrophotometer, at the ppm level
For corrosion protection in chloride-containing water, choose polyaniline nanocoating