What are the reasons for inaccurate bottom pressure in the absorption tower?
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The pressure at the bottom of the absorption tower isn’t quite accurate; it seems that there is still some liquid present. Can everyone help figure out what the cause might be? It seems to mean that there is a continuous flow of liquid in the pressure gauge pipeline, and it cannot be drained completely.
There are no condensers or pipes; can you send a picture?
There is a dead zone in front of the pressure gauge, and the flow path isn’t very long; the condition with liquid present or without it should be relatively stable. Where does such a large deviation come from?
Here too, the pressures in the quench tower and the absorption tower are accurate for a long time, but once they become inaccurate, not only do the pressures upward and downward become incorrect, but even the pressure in the quench tower becomes inaccurate as well; basically, the gauges need to be calibrated every day
There is one with a hydraulic kettle; the pipe is 3 meters long and located on the platform below the outlet.
He said that the normal pressure is around 20 KPA, but now it shows around 50 KPA whenever there is liquid present. The inability to completely drain the liquid means that the outlet valve isn’t closed, so drainage continues continuously. It turns out it never appeared before.
No, if foaming occurs, the SO2 emissions would have already failed to meet the standards – it’s been about 10 days now
The SO2 emissions will definitely be higher than those without foaming, but they may not necessarily exceed the limits. It depends on the intensity. If the pressure tapping point is located on the tower wall, this is possible; otherwise, how could there be liquid that cannot be drained?
This issue has never occurred before when using amine-based foaming agents. Besides, no changes were observed in the recycling system either (at least the foam is very light; otherwise it would have been noticed earlier).
Is the pressure gauge on site accurate? Has the weather gotten colder where you are lately?