What should be done if there is a current interruption when increasing the current in the electrolyzer of the caustic soda process?
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Dear Haihao friends, in the caustic soda production process, what should be done if there is a current interruption when increasing the current? What operations needs to be done on DCS? Is it necessary to increase the saltwater feed rate? Should we reduce the current or increase the brine flow rate? Thank you.
There was no flow interruption during normal operation; the flow rate was the same as before, yet the electrolyzer experienced a flow interruption. What could be the reason for this? How should it be handled?
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Could the original poster provide more information? What is the reason for the interruption? Clogged? Pinhole? Increasing the flow rate could be tried; if that doesn’t work, the only option is to shut it down immediately, otherwise it’s very dangerous.
This post was last edited by paul2100 on 2015-8-30 22:32. 1. What is the increase in current, from what value to what value? 2. Is it a cathode or an anode, and is it an inlet or an outlet? 3. Is the flow interrupted for the entire tank, or only for certain hoses?
Hello, the current has increased from 16KA to 17KA; the anode overflow port has stopped functioning, while the cathode is working normally. The same operation was performed yesterday without any problems, but this is what’s happening today. What could be the cause? How can it be resolved? :)
Generally, the current does not stop increasing; if it does stop, operations should be halted immediately to check for leaks in the membrane. Small pinholes do not cause the current to stop increasing.
1. What type of electrolyzer is this, with such high current? 2. Is it just one specific hose that has stopped flowing, or is the entire electrolyzer not functioning? 3. How long is the shutdown interval? 4. Is the groove voltage of the cut-off groove normal?
What is the change in hydrogen chloride pressure when the current is increased?
The current is rising too quickly; slowing it down will prevent this from happening
The current has increased from 16KA to 17KA; in my opinion, there is no issue with it increasing too quickly. I’ll share a situation I encountered: there was a problem with the external power supply, and they asked our company to reduce the current. The situation was quite urgent; the current flowing through the electrolyzer dropped by 3 KA all at once, which caused the flow at the anode outlet of the electrolyzer to stop immediately. This interruption lasted for a fairly long time – probably around 5 or 6 seconds