What causes the increase in pressure difference in the regeneration tower?
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Recently, the pressure difference in the regeneration tower has increased to 55–60 kap, whereas it used to be between 22–30 kap; this increase has been particularly noticeable lately. The liquid level in the regeneration tower is also relatively stable, with the temperature at the bottom of the tower ranging from 125–127°C. The amount of steam supplied is not high either. Please help analyze the reasons for this situation. Thank you! 1. Is the tray clogged? 2. The color of the solvent is good; there are no signs of foaming, and the defoaming time is also short. 3. The pressure at the top of the tower decreased as well, following adjustments to the pressure control valve
Consider the possibility of crystalline blockage in the defoaming screen of the reflux tank
After I increased the pressure control valve at the tower top, the tower top pressure also dropped, and the amount of acidic gas also changed
If the tray is clogged and the medium is coke powder, can it be flushed away using water circulation?
Our coking dry gas desulfurization tower is a packed tower; this phenomenon occurred before as well. The packing was replaced in August, and now it’s fine.
It is possible that the rich amine solution contains heavy hydrocarbons, resulting in an increased pressure difference in the regeneration tower