Refined solid salt particles enter the brine storage tank for brining. Saturated brine enters the brine filter and is adjusted to pH 3-4. The brine is then pumped into the anode inlet manifold of the electrolytic cell after being heated to 60–65°C. The refined brine flow is controlled by a self-adjusting valve, and the flow into each electrolytic cell is controlled by the series control of direct current flow.
The electrolysis of the refined brine in the anode chamber produces chlorine gas and reduces the concentration of sodium chloride. The mixture of chlorine gas and brackish water undergoes gas-liquid separation in the outlet manifold. Chlorine gas is sent to the sodium hypochlorite generation system, while low-concentration chlorine-containing brackish water is returned to the brine storage tank for further saturation and circulation electrolysis.
Solid caustic soda is diluted to 15% in the dilute caustic soda tank, part of which is pumped to the cathode liquid circulation tank. Pure water is added to dilute it to 12%. This mixture is then sent to the electrolytic cell, and the cathode liquid is circulated in this way.
Another portion of caustic soda is cooled and stabilized, sent to the sodium hypochlorite generation system, and absorbed to generate the required concentration of sodium hypochlorite solution.
