Liquid in the dry gas desulfurization tower
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For some reason, our device’s desulfurization packing tower keeps experiencing liquid carryover, and the rich liquid fails to flow downward inside the tower. Every time a pressure difference increases (as a precursor to liquid carryover), we have to either strike the tower with a hammer or inject hot water to clean it. What could be causing this? Currently, this seasoning tower is operated at a low liquid level; would it be possible to switch to operating it at a higher liquid level in the tower? Are there any similar devices that operate at the upper liquid level? Will similar problems occur with high liquid level operation?
If the liquid-containing or rich-liquid phase doesn’t flow downward, could it be due to an excessive gas-phase load?
We also have a dry gas desulfurization system here; aside from severe corrosion at the top of the tower, all operations have been proceeding smoothly, and there has never been any issue with the rich liquid not flowing properly, as you mentioned. I’m not sure what the temperatures of the dry gas and lean liquid entering the tower are in your area? Also, you said that a sledgehammer could solve the problem – so is it because the filler wasn’t filled properly?
It shouldn’t be; it worked fine before, and it was okay after the maintenance as well. But after some time, it stopped working properly
Does the tower have a design to balance the pressure at the top and bottom of the tower?
1. It is due to an overload of dry gas; the processing volume exceeds the designed capacity, resulting in a high line speed； 2. The hydrocarbon-to-agent ratio is high, the circulation volume of the lean liquid is overloaded, and the downward flow of the lean liquid is hindered ； 3. The lean liquid is dirty, containing solid impurities that adhere to the packing, thereby affecting its permeability ； 4. High concentration of lean liquid or pollutants can cause problems such as foaming ； Please check each item one by one and take appropriate measures accordingly. It is not recommended to adjust the feeding level, as dry gas is more likely to carry liquid!
The deamination separator did not remove the amine thoroughly, leaving it behind.