Issues with the circulation flow rate of saline in chlorine plant electrolyzers
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This post was last edited by sunjl1981 on 2013-1-7 00:26. For chlorine production electrolyzers, the flow rate of the recycled brine and the brine fed into the cell is set at a ratio of 1:1 by some manufacturers; however, in chlorine production processes, it is required that the current level remain constant for currents above 5 kA. Experts, please provide your advice. # hcbbs
I watched for a long time but still didn’t understand what the poster was trying to say. I guess the original poster is asking why the ratio of brine to refined salt water before and after the 5KA current flow is different? Still can’t understand. :L
Yes, the ratio of brine returning to the tank to concentrated brine
The issue is as follows: the brine circulation acts like a catalyst; its quantity remains constant. What needs to be done is to increase the flow rate and reduce the cell voltage, in order to keep the concentration of brine in the electrochemical cells within a certain range (currently it’s 190–210, whereas it used to be 190–240). Asahi Kasei is 2:1. It’s all the same principle in reality.
Increasing the circulating brine is intended to raise the overflow rate of the anode; it also helps to increase the temperature of the brine entering the tank. Moreover, the use of external acid addition improves the purity of chlorine by reducing the oxygen content in it. As for why the value remains constant above 5KA, it is mainly to regulate the concentration of the brine entering the tank
This ratio is mainly used to adjust the concentration of the brine fed into the tank; at 5KA, this concentration is already fine. That's it.