Acid replacement issue for Na-type vacuum pumps……
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This post was last edited by sunjl1981 on 2013-1-6 at 23:09. I just went to the chlor-alkali plant and encountered a problem: When the acid concentration in the Nessler pump is too low, it’s necessary to replace the acid. Yesterday, I replaced the acid several times, but the concentration still didn’t reach 94%; moreover, the acid in the buffer tank had been completely used up. After analysis, it seems that the waste acid in the part of the pump below the central axis cannot be discharged, which is why it took several attempts to get the concentration up to 94%. Therefore, it is quite time-consuming and labor-intensive. Is there any way to successfully replace the acid in just one attempt? :handshake # + + .
The poster’s analysis doesn’t make sense; unless you are shutting down the system to replace the acid, check whether there are errors in your laboratory tests, or perhaps the sampling point is in a dead zone
It’s probably related to the sampling points; the original poster should check whether there are any dead zones in the sampling at those points
If the analysis is fine and there are no issues with the sampling points, then the problem lies with the concentrated acid
If it’s not a problem with the sampling point or the specific gravity measurement, check your separator to see whether its acid outlet pipe leads directly to the bottom or if there is an extension tube; if there is an extension tube, check whether it has broken inside. This will affect the amount of acid to be replaced.
I would like to ask about the procedure for changing the acid. Thank you! ! There is also the issue of selecting sampling points, 3Q!
Can continuous acid replacement be used? Regularly replenish acid 98 or acid 105.
Hello, regarding your question, if there is no error in the analysis, I personally have two methods for replacing the acid: 1. You can replace the concentrated sulfuric acid needed for that day; in our case, it’s about 1.3 per shift, so around 3.5 per day. This method of acid replacement makes it difficult to control pressure, flow rate, and liquid level, but it saves time. It is also possible to carry out acid replacement in shifts, with testing and acid replacement taking place once per shift; this approach helps maintain a constant concentration and makes it easier to control pressure, flow rate, and liquid level
It’s not possible to switch operators; they haven’t mastered the key skills for operating it.