What are the reasons for the decreased separation capacity of a packed tower?
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This post was last edited by cfzh56 on 2011-6-23 23:15. Our unit is equipped with a packed tower, using Pall ring packing; the composition of the gas exiting the top of the tower is similar to that of the feed, and the reflux is normal. How can this problem be resolved? Please help everyone
The temperature might not be high enough. The original poster should explain what kind of cleaning is done in your tower, as well as the operating conditions, etc~
The conditions are not detailed enough to enable analysis
Possible cause: The reflux distributor is damaged, resulting in uneven reflux distribution； The filler cokes or scales, reducing the gas-liquid contact area and lowering the separation efficiency ； Rapid temperature increase leads to flooding ； It’s also possible that the packing level is too low, resulting in low separation efficiency.
1. The conditions must be sufficient: the system, operating flow rate. 2. If the separation efficiency is low, how do the temperatures at the top and bottom of the tower change? 3. It is necessary to provide basic information on whether it is due to the operating conditions or a problem with the packing itself.
Packed towers are generally operated at low temperatures, so it’s likely not a temperature issue; the reagent-to-oil ratio might also have an impact. The most probable cause is the presence of contaminants in the packing, and washing it with an activator should resolve the problem.