In one of our unit, we are facing the issue of heavy line vibration in column overhead condenser outlet line.
Over head condenser is a air cooled condenser of having 12 bay and each bay consists of two number of fans.
The design is as per UOP.
The run down line from the outlet header pipe is 18" line.
As per UOP design, there is an equalization line (6") from the same header connected to receiver.
As per the UOP design basis, the equalization line to be exactly on top of run don line. Refer attached P&ID.
At present, it is deviating the design. Equalization line is 3 meters far from the run down point. Is it the cause of line hammering and vibration?
UOP mentioned in their design basis, that Equalization line has been given to keep the outlet stream in two phase. Subcooling liquid may creates more problems.
One more observation is the outlets from all the connected to header and rundown line is not at its center. i.e it is not symmetric. What are the impacts of non symmetry in condenser outlet?
Now the line supports have been verified for two phase flow and found adequate as per Mechanical.
Please provide your valuable inputs.
Thanks!
Rajesh