Regarding multiple polarization tanks sharing one circulation system, the concentrations of fresh brine and alkaline solution exiting a single tank
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This post was last edited by sunjl1981 on 2013-1-6 at 19:50. When multiple bipolar cells share the same circulation system, differences in current efficiency lead to significant variations in the concentrations of alkaline solution and brackish water exiting each individual cell over time! At this time, we generally maintain the concentration balance in each tank by adjusting the ratio of FCV231 and the flow rate of the alkali solution fed into each tank. We generally keep the concentration of saltwater entering the tank between 280 and 290; we control it using a ratio of 265, and it usually remains around 0.143! I wonder how everyone controls these two metrics? # ， ， &
It is sufficient to control the concentration and flow rate of the saline and alkaline solutions entering the tank. There will definitely be a deviation in the concentration of the brine coming out of the tank, but that’s okay ； It is mainly the concentration of the alkaline solution coming out of the tank, and it basically doesn’t change much.
As long as the concentration of the alkali solution exiting the single tank is within the specified range, adjust the ratio of FI221 based on the outlet concentration at P274. The saltwater concentration is based on the concentration at the outlet. This can be achieved by controlling the concentration of the secondary brine.