Questions regarding chloride ions and free chlorine in circulating water
Thread Content
There are specified limits for both chloride ions and free chlorine in circulating water. May I ask, can free chlorine be converted into chloride ions in water? If it can be changed, then cannot liquid chlorine be added to the circulating water used in stainless steel cooling systems? Are there no requirements for free chlorine levels in circulating water either? Thank you!
Free chlorine in circulating water eventually converts into chloride ions, as there are always some reducing substances in the water that cause free chlorine to react with them and turn into chloride ions. The amount of free chlorine in circulating water is very low compared to the amount of chloride ions; unless the accumulation process lasts for too long, free chlorine has little impact on the total concentration of chloride ions. Circulating water uses liquid chlorine as a disinfectant; it is cost-effective and reliable in terms of performance, and its operation and maintenance are mature and stable. There is a specified upper limit for the chloride ion concentration in circulating water; staying within this limit will not cause significant corrosion to stainless steel.
GB 50050-2007, the \"Design Code for Industrial Circulating Cooling Water Treatment\", sets requirements regarding chloride ions. These requirements are quite general; in practice, many units use plate-type coolers (made of 304 material) for their oil coolers, and no corrosion problems arise in such cases. Many types of chemicals used in circulating water treatment contain chloride ions, while liquid chlorine is just one type of disinfectant. Nowadays, many industrial facilities use liquid chlorine for disinfection in their circulating water systems; all that is needed is to ensure that the total amount of chloride ions in the water treatment system does not exceed the specified limits (or those set by the formula for the water treatment chemicals).
Of course it will turn into chloride ions. Chlorine can dissolve in water and react to produce hypochlorous acid and hydrochloric acid; it’s a very simple reaction, and chloride ions are inevitably formed as a result
There are so many things to learn on the 2nd floor – please participate more.
We have chloride adsorbents that can easily remove chloride ions.
Can chloride ions be removed from crude benzene?