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?
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