Ask for help: Distillation tower packing
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Bulk packing is used in the lower part of the distillation tower and structured packing is used in the upper part. Now the distillation effect is worse than before, and the separation ability is worse than before, and the high boiling substances are higher. Analyze the possible reasons? If there is a problem with the packing, is there a problem with that section?
Bulk packing is used in the lower section and structured packing is used in the upper section. This may be because the raw materials contain impurities that are easy to polymerize and are clogged, causing blockage of the packing layer in the lower section or blockage of the distributor, resulting in a decrease in the separation effect. First, observe, has the pressure drop in each section increased compared to before?
As my friend above said, it may be that the random packing is severely scaled. In fact, if the media impurities have large particles, the structured packing is most likely to be clogged. It is recommended that if there is an overhaul plan, it is best to check the upper and lower packings.
The author's introduction is simple. If the tower has been used before, you can compare the pressure drop and temperature difference distribution of the tower to judge.