The alkali consumption for ammonia vaporization suddenly increases
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It was operating smoothly before, but in the past day or two the amount of alkali required has suddenly increased, and the ammonia nitrogen level remains high. Now the amount of alkali added is almost twice what it used to be; things have just stabilized, but the pH is low. What could be the reason?
Here, when the flow rate is below 35 cubic units, the consumption of liquid caustic is low, the pH value is around 7, and the ammonia nitrogen level is also below 100. However, when the flow rate exceeds 35, the pH value rises above 9, and the consumption of liquid caustic increases significantly; I’m not sure why
Consider the issue of liquid caustic being diluted; determine exactly where it is diluted based on the actual situation
Of course, it’s also possible that there is a short circuit in the liquid alkali pipeline; it’s necessary to check the specific layout of the pipeline to see if there is indeed a short circuit, as this could lead to backflow in some areas