Rental Separator PCV & FCV Configuration

[10815L]

Hi,
My company is going to install a rental production test separator and this separator is equipped with PCV and FCV, gas will pass trough the glycol contactor and finally will go to gas pipeline.
The question is, is this configuration will work good or need to change it. i personally assume some sort of pulsation will be there and create problem in glycol contactor.
can any one put some light on this problem and suggest the solution.
Thanks
10815l

 

[dcasto]

you cannot control both pressure and flow, it is one or the other.

NOW, you can control back pressure on the glycol contactor which is good if you can afford the energy loss and that the pipeline pressure will always be below the back pressure set point Then you can have a flow control into the contactor, but again, there will be a loss in energy and the upstream pressur will always be higher than contactor pressue.

Generally the arrangement is either pressure control with flow override OR flow control with pressure override as a system that is very very flexible. Since the person leasing the system will have more customers with a flexible system, they just do it as a standard way to satisfy the majority.

You do not need PCV or FCV in most cases.

Why would you even expect pulsation in a contactor, that should be addressed in the compressor design.