Anti-clogging performance of plate corrugated structured packing and Pall rings, stepped rings
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Regarding the washing of dust-containing gases, plate-type and spray washing methods are less prone to clogging and have low resistance, but their dust removal efficiency is poor. The Ball ring washing method can achieve good results; however, the packing tends to clog over time. Step rings are supposed to have better resistance to clogging than Ball rings, but in practice they clog more quickly. It’s not clear whether this is due to insufficient spraying volume. We are considering using perforated corrugated packing – we would like to know what its resistance to clogging is like. Those who have experience using this type of packing or who are familiar with the performance of these different packing materials are welcome to offer suggestions or share their experience.
No one has told you the outcome; it depends on the operating conditions and some experience, and none of the above options are very good. There are more advanced ones
This post was last edited by CHANGBAISHI on 2020-4-23 07:35. If those fillers you mentioned are not suitable, is a Lassie ring better than these? Or use a sieve-plate type water distributor with distribution exhaust stacks, and arrange the packing thickness in layers? ? Refer to the schematic diagram of the water cooling tower. Or consider installing dust removal equipment before that? I’m not sure which system requires it; it would be best to send over the current schematic diagram or image for reference, so as to facilitate discussion.
There are cyclone and bag filters in front of the scrubber tower; the powder that is not captured by the bags needs to be washed. The liquid distribution uses the poorest quality nozzles. We are planning to replace the entire tower with more efficient distributors and structured packing, but I’m not sure whether such structured packing will be resistant to clogging.
I think it’s still better to plan ahead; just in case there’s a blockage, what’s the backup plan?
There is something more advanced out there; please advise so we can avoid taking detours
Have you used plate towers for washing, and did that prove that the washing effect is poor?
For wash towers that are prone to clogging, most of the projects I have been involved in use plate towers designed to prevent clogging; packing is used rarely, especially loose packing.
Factors such as the quality of the dust, whether it tends to caking, and the condition of the dust when mixed with water need to be taken into consideration. I have used converter dust removal cooling towers, and regular packing was used at that time. The wastewater contains iron oxide and lime powder, which crushed all the PVC structured packing in a short period of time. Lime powder plays a crucial role in it. Therefore, the physicochemical properties of the mixture of dust and water need to be considered. I’m not sure what the shape of the tower is now; let’s see if it’s possible to carry out modifications first and test various options. The most suitable experience can be obtained from this. Then, develop a plan for the new equipment. In the case of bag dust collection, as long as it isn’t damaged, the amount of dust won’t be too high. Take a look or pay attention to the physical and chemical properties of dust. Assume that for the cylindrical high towers or square tower structures currently in use, it is feasible to add nozzles to increase the water flow ； Gradually increase the number of partitioned trays; the packing thickness on these trays should not be too high (use inexpensive Raschig rings or Pall rings for experimental modifications). For reference.
What type of plate column have you built – is it the kind with openings in the inclined plates and no overflow?