Sales Spec Failure

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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