Help needed; I’m facing problems while designing a packed tower.

Is the corrugated packing of 350Y plate used? What is the calculated flooding gas velocity? What is the number of theoretical plates you calculated? How high is the packing layer? If the calculations are correct, tower equipment with a diameter of less than DN800 usually needs to be segmented; that is, the cylinder is divided into sections, which are connected together using flanges. The packing and all other internal components of the tower are inserted into the tower through the flanges on the cylinder ； When the tower diameter is greater than DN800, an integral structure is generally used, with the packing and all internal components of the tower being inserted into the tower through the manhole for assembly.

How can such a tall tower be disassembled and assembled without using segmented packing? Since it’s part of the design process, one should have a basic understanding of packed towers; there are pictures, flowcharts, and animations available on this topic that make it easy to understand

I am using M250y corrugated packing; the liquid flooding gas velocity is between 50% and 60%, the number of theoretical plates is 30, and the height of the packing layer is 11.55 meters. The calculations should be fine, but when I asked my teacher, he said that the height-to-diameter ratio is too high. Also, regarding the segmentation, will it all be connected together as one tower using flanges in the end? What does it mean that the packing and all the internal components of the tower are installed into the tower through the flanges of the cylinder? Also, should the segmentation be shown on the CAD drawing?

Hello, I based this design on various documents and reference books; I haven’t mastered the subject thoroughly. Do you have any good reference materials?

https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1637020 There are some animations here; it’s not clear whether there is information on the process related to towers. I have downloaded content from the forum. Towers are designed for practical use, so considerations must be given to their actual construction, installation, as well as maintenance and repair. I’ve seen that for towers with a small diameter, they are assembled section by section using large flanges; in most cases, however, the tower is a single unit, and the tray and internal components are installed through access holes. If it’s difficult to install the regular packing in small towers, consider changing the design or using random-packed packing instead

I just replaced the filler, and now everything is working properly. Thank you.

For the specific segmented installation, you can refer to the pictures of the small tower from one of my previous projects; each flange on the cylinder body needs to be drawn out. The packing factors of M350Y and M250Y are similar, and the height of the plates differs little as well. Tower equipment calculated using regularly structured packing with plate corrugations has one distinct feature: it is tall and narrow, since such packing does not require a very high density of liquid spray ； The DN500 design you previously created with H=21m is fine from a process perspective, but from an equipment standpoint, such a thin and tall cylinder may not meet the load calculation requirements. Since it is so thin and tall, if it is to be erected on site, it will either require tensioning cables to keep it upright or it must be self-supporting; otherwise, even a slight breeze will cause it to sway. Moreover, with such thin dimensions, it’s not possible to add platforms to the cylinder of the tower. If regular packing is still to be used, metal wire mesh packings such as BX and CY can be chosen; due to the requirements regarding spray density, these types of tower equipment are designed to be relatively larger in size.

Thank you; I ended up using the bx filler and it made a big difference. I’m very grateful:D

For fillers with such a small diameter and a high height, segmentation is necessary, primarily to prevent the deviation of the backflow liquid, as this would significantly reduce the efficiency of the tower. Therefore, after segmentation, a redistributor must be installed to facilitate the distribution of the returning liquid. You can give it a try; this will significantly improve the efficiency of the tower.