Knockout Drum Liguid Phase Discharge Piping
Knockout Drum Liguid Phase Discharge Piping
(OP)
Hi,
I have a simple question. Can anybody tell me is it possible to connect liquid phase discharge line of the Knockout Drum directly
to the flare header the same way the gas discharge line of the drum is conected to the header (see attachment).
Thanks in advance.
I have a simple question. Can anybody tell me is it possible to connect liquid phase discharge line of the Knockout Drum directly
to the flare header the same way the gas discharge line of the drum is conected to the header (see attachment).
Thanks in advance.





RE: Knockout Drum Liguid Phase Discharge Piping
RE: Knockout Drum Liguid Phase Discharge Piping
What is the purpose/service of the vessel, and why would you want to direct liquid phase to the flare?
Dejan IVANOVIC
Process Engineer, MSChE
RE: Knockout Drum Liguid Phase Discharge Piping
David Simpson, PE
MuleShoe Engineering
In questions of science, the authority of a thousand is not worth the humble reasoning of a single individual. Galileo Galilei, Italian Physicist
RE: Knockout Drum Liguid Phase Discharge Piping
RE: Knockout Drum Liguid Phase Discharge Piping
a) Process liquids should not be routed to a gas phase flare header - liquids in this header can generate severe slug forces during a blowdown event / high flow relief event and damage flare piping. Process liquids, if they must be routed to the flare KOD, should be routed through a collection header dedicated for liquids only. The flare gas collection headers in this plant must also, for the same reason, slope continously all the way down to the flare KOD.
b) The RV on this process KOD should have its exit sloping DOWN into the flare header, not sloping up. So this RV should be relocated.
RE: Knockout Drum Liguid Phase Discharge Piping
RE: Knockout Drum Liguid Phase Discharge Piping
Best regards, Morten