Regeneration tower pressure difference issue
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The pressure difference in the regeneration tower has suddenly increased recently, and the hydrogen sulfide content in the lean amine solution is also below the required standards. It is suspected that there is blockage in the trays of the regeneration tower; I would appreciate advice from those with expertise on this matter
Fluctuations in the liquid level at the bottom of the tower, right? The situation with the flooded tower troubled us for an entire year over a decade ago. It’s now acidic gas-induced salt formation; the acidic gas pipelines are blocked, and the pressure measurement points for acidic gas are also blocked, causing problems that have persisted for two and a half years.
Isn’t heat tracing installed on the acidic gas line? We have heat tracing here as well.
We have encountered this problem as well; normally, the difference between the top and middle parts of the tower is around 30. However, the liquid level fluctuations are not significant. Once, after removing the pressure gauge pipeline at the top of the tower, the pipeline became clogged. The salt there looked like crystal, but it had a very unpleasant smell. In some sections of the tower, cooling occurs through counterflow, and when the backflow volume is high, the pressure difference increases as well. Another issue is severe water carryover in the steam, which prevents water from reaching the lower parts of the tower, again leading to an increased pressure difference. These are my thoughts; please let me know if I’m wrong
It shouldn’t be that easy to get clogged; it might be due to foaming. Try adding some defoamer, or else replace it with some new amine solution
Is there a leak at the gas inlet of the regeneration tower, causing the semi-poor liquid to enter the tower directly?
After leaving the samples for a few days, a layer of yellowish-white precipitate was observed on top of the lean liquid; upon shaking, this precipitate broke apart and sank to the bottom. The color of the lean liquid is dark red and opaque.