2 replies to this topic

[amiprocess]

Hello good day to you. We are at the bid design phase of a meter regulating system capacity (750 MMSCFD). In this case we need to design vertical Knock Out Drum with vane mist eliminator. 

The calculation file is attached herewith. 

 

Inlet Gas condition

> water content 7 lb/MMscfd

> 700-1150 psig

>15 C to 24 C

>375 MMSCFD

>inlet line size= 20"=Outlet line size

>Calculated inner dia=49.5"

 

Confusions

1. is the inner dia is sufficient at this condition? Please advice

2. Momentum is too high through 20" nozzle size and outlet. Diffuser distributor is to use which is not possible in inline configuration. Please advice

 

Attached Files

•  inline vane type vertical separator.pdf   249.33KB   39 downloads

[Bobby Strain]

If it were my job I would send duty spec to vendors and let them size it. You show sizing only for the lower pressure, but the vanes show poor performance at the highest pressure. Inline arrangement might not be a good selection. Let the vendors decide. And be sure to give the flow at the highest pressure, too. The sizing sheet indicates you are providing two separators for the service. This might not be necessary, unless you have reason to always be online.

 

Bobby

[amiprocess]

Thank you Bobby. I appreciate your suggestion. I will recheck the vessel performance for high pressure and I will contact to the vendor for the final decision.