How should the wall thickness of an atmospheric pressure tower be chosen? Is a thickness of 10 for a tower with a diameter of 3200 and a height of 2100 at normal pressure reasonable?
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Based on everyone’s experience, is this reasonable? Calculating the thickness directly gives a value that is too small, so 10 is used instead. Thank you!
Our 1800*34000 model has three layers of 0cr18ni9 on the inner side, and twelve layers of 20R on the outer side
Is it only 2100 in height? If it’s 2100, I think that’s fine
Is the distillation tower that small? Only 2100 in height?
The calculated thickness = PD / (2 * allowable stress at the design temperature * welding joint factor – P). Here, P is the design pressure and D is the diameter. The welding factor is usually 0.85; this value is applicable to ordinary towers and depends on the welding method and inspection procedures; it can be found in relevant references. The allowable stress at the design temperature can also be obtained by consulting tables, depending on the material chosen – for example, 20R – and simply looking up the corresponding values. I can’t find the books from my school days right now, but I remember it being calculated in this way. When calculating the wall thickness, it’s also necessary to include a margin for corrosion, and then round the result to the standard steel plate thickness, which gives us the desired thickness. Additionally, the stiffness of the container must be taken into account, so that it doesn’t deform once placed in use. If your tower is low, a thickness of 10 units should be sufficient for ensuring stiffness. Let’s discuss this further together
For such a short tower, this thickness should be sufficient!
:Lol, a tower this short should be enough. .
It seems a bit large. There’s an example in JB4710: for a tower with a diameter of 1400X18900, only 8 layers are used, and the corrosion allowance is 3mm
Let’s see what material it is; with a diameter that large, 10mm seems a bit small
Can this be considered a tower? It’s 21,000 mm, right? When calculating the thickness of tower structures, pressure isn’t always the determining factor; loads such as wind and earthquakes also need to be taken into account. This requires some calculations, and of course, stiffness must also be considered