Sales Spec Failure
From FNNC
If the acid gas content of the sweetened gas exceeds sales specifications, the following areas should be investigated:
- insufficient amine circulation rate:
- -operating problems with the train’s online charge amine pump
- -speed of online charge amine pumps too low
- -amine booster pump operating problems
- -low level in the amine surge tank
- insufficient amine regeneration:
- -insufficient stripping steam/reboiler heat input
- -insufficient amine still reflux
- -incorrect amine still pressure
- -contaminated or degraded amine
- -plugged amine still valve trays
- -too low a amine flow through Amine regenerator
- -internal leakage problems at lean/rich amine exchangers causing rich amine to leak into lean amine
- different operating conditions:
- -lean amine too hot
- -amine contactor pressure too low
- -too high a gas flow through contactor
- -amine concentration too high or too low
- -too high a gas flow through contactor