Topic Options
#76869 - 12/16/22 09:28 AM Distillation Column Pipe Supporting
zall Offline
Member

Registered: 11/15/18
Posts: 23
Loc: Turkey
Hello everyone. I searched my issue in this forum and other place. But I could not find a satisfactory answer.


Pipe is 48" and connected to top of vent nozzle of the vessel. I supported pipe near to top with hanger. Hanger node is 280 and CNode is 281. A weightless rigid connect to node 281 from the center of the vessel. I applied this method to all supports. But I confused. Whole vertical pipe is moving to up along with vessel. Does it true?


Attachments
2022-12-16_18h01_59.png

2022-12-16_18h28_27.png



Top
#76870 - 12/16/22 10:41 AM Re: Distillation Column Pipe Supporting [Re: zall]
vermaccio Offline
Member

Registered: 09/05/17
Posts: 169
Loc: italy
i think you have to use a simple rest as high as possibile, near the column top elevation.

using a spring hanger can create problems. what if load is not right? you will exceed max nozzle loads for torsion and weight....

Top
#76871 - 12/16/22 10:42 AM Re: Distillation Column Pipe Supporting [Re: zall]
vermaccio Offline
Member

Registered: 09/05/17
Posts: 169
Loc: italy

Top
#76872 - 12/19/22 01:14 AM Re: Distillation Column Pipe Supporting [Re: zall]
zall Offline
Member

Registered: 11/15/18
Posts: 23
Loc: Turkey
Sory i can't type. Forum is giving error.



Edited by zall (12/19/22 01:57 AM)

Top
#76874 - 12/22/22 06:30 AM Re: Distillation Column Pipe Supporting [Re: zall]
zall Offline
Member

Registered: 11/15/18
Posts: 23
Loc: Turkey
Do you think in Caesar the modeling of the supports I made from the tank is correct? For example Nodes, Cnodes and rigid location.


Edited by zall (12/22/22 06:35 AM)

Top
#76921 - 01/25/23 05:43 AM Re: Distillation Column Pipe Supporting [Re: zall]
danb Offline
Member

Registered: 04/22/05
Posts: 1453
Loc: ...
"Whole vertical pipe is moving to up along with vessel. Does it true?"

sure. it is connected to the vessel. So will move with the vessel.
_________________________
Dan

Top
#76932 - 02/02/23 02:58 PM Re: Distillation Column Pipe Supporting [Re: zall]
Edward Klein Offline
Member

Registered: 10/24/00
Posts: 334
Loc: Houston, Texas, USA
Originally Posted By: zall
But I confused. Whole vertical pipe is moving to up along with vessel. Does it true?


Certainly it's true. What were you expecting to happen?

As for the support arrangement, the other poster is correct, you really want hard supports rather than springs. It is generally good practice to support the line from the column up high as close to the nozzle as you can to minimize differential expansion.

Why do you have that 180 u-bend up at the top?
_________________________
Edward L. Klein
Pipe Stress Engineer

All the world is a Spring

Top



Moderator:  Denny_Thomas, uribejl 
Who's Online
0 registered (), 23 Guests and 0 Spiders online.
Key: Admin, Global Mod, Mod
February
Su M Tu W Th F Sa
1 2 3
4 5 6 7 8 9 10
11 12 13 14 15 16 17
18 19 20 21 22 23 24
25 26 27 28 29
Forum Stats
12065 Members
14 Forums
16973 Topics
75151 Posts

Max Online: 303 @ 01/28/20 11:58 PM
Top Posters (30 Days)