Under strong alkaline conditions, Ca and Fe in the EDTA-Ca and EDTA-Fe complexes, except for…
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Currently, the company is facing such a problem in its production process: it involves a liquid-liquid reaction to produce solid products, with the aim of reducing the levels of elements such as Ca, Fe, and Mg in these products. A small amount of EDTA is added to the system, and through complexation, Ca, Fe, and Mg are converted into complexes that remain in the liquid phase. However, as the liquid phase is continuously recycled, the concentration of the complex keeps increasing, which results in poor product quality ； Since the system is highly alkaline, EDTA has a strong chelating ability; so how can this complex be broken down? ? ? ? ?
During the cyclic operation of the liquid phase, impurities accumulate over time. The normal procedure is to regularly discharge the liquid phase containing a high amount of impurities. Why don’t you ensure product quality by regularly and in fixed quantities discharging the circulating mother liquor with high impurity concentrations and replenishing it with fresh mother liquor during your operations?
The original design did not take into account the removal of this solution from the system; a better approach is needed. .