Currently i am studying the possibility to routing the vent gas from sour seal oil trap to the flare. In the Original design, the vent gas is routed to the atmospher. However, by the safety reasons, the vent gas need to be re-routed to the saver area.
In normal condition, the pressure in the seal oil trap is 1.5 kg/cm2g, whereas the flare header is 0.2 kg/cm2g. This differential pressure is considered enough as driving force for vent gas to flow from the trap to flare header at normal rate. However, in some case, the flare header pressure could increase to 1.3 kg/cm2g. My question is : What problem that can be happened in seal oil system if the flare header pressure significantly increase? Is there any possibility seal oil ingress to process side of compressor? Do I need to do something with the restriction orifice on the seal oil trap vent? like resize the hole size of the restriction orifice?
Hope someone has experience with my problem above.
Thank you
Edited by Zaki Arif, 29 July 2015 - 09:35 PM.