Some issues regarding the startup and shutdown of electrolysis processes
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This post was last edited by sunjl1981 on 2013-1-6 at 22:02. Our company uses Sumitomo NCH electrolyzers, and the operating procedures state that electrolyte circulation must be carried out both during startup and shutdown. The anode uses diluted salt water; so what is the circulation path for the electrolyte between the cathode and the anode in this case? When circulating the electrolyte in the parking mode, which pumps need to be started for circulation? If there is a power outage, which pumps must be restarted using an emergency power source? There is another issue: the hydrochloric acid we use for driving is fine when it’s purchased, but once it enters the hydrochloric acid storage tank, it becomes substandard. What’s the problem then – is it the tank, the pipelines, or the pump? ， ， -
The problem with hydrochloric acid must lie in the tank. What material is the tank made of? Analyze in advance the composition of the residual hydrochloric acid inside the tank
D150-P154-D170-Electrolyzer-260-P264-D310 Valve 84#-D270-P274-D273-Electrolyzer-D270
Reply 1# linqhy: Is it due to excessive levels of calcium and magnesium? Check the material of the tank (if it has a lining, then check that lining) to see if it is low in calcium and magnesium. Of course, if the iron content is too high, it might be because the tank wasn’t cleaned properly, with residues such as welding slag or gaskets still remaining. Feedback is welcome!
You don’t even know the functions of valves 85, 86, and 88.