METHOD FOR REMOVING MERCURY FROM NATURAL GAS

Trace levels of mercury in a natural gas are removed in a gas processing plant in an amine unit and / or a dehydrator. The mercury removal occurs concurrently with the removal of acid gases in an amine unit, e.g., an absorber or scrubber, with an amine solution containing a complexing agent. The mer...

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Bibliographische Detailangaben
Hauptverfasser: O'REAR, Dennis, John, SHEU, Feng-Ran, BELUE, Jordan, Taylor, COOPER, Russell, Evan
Format: Patent
Sprache:eng ; fre ; ger
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Zusammenfassung:Trace levels of mercury in a natural gas are removed in a gas processing plant in an amine unit and / or a dehydrator. The mercury removal occurs concurrently with the removal of acid gases in an amine unit, e.g., an absorber or scrubber, with an amine solution containing a complexing agent. The mercury removal can also be carried out concurrently with the removal of water in a glycol dehydrator with the addition of a complexing agent to the glycol solution. Volatile mercury in the natural gas is removed by the complexing agent, forming non-volatile mercury species in the rich amine / glycol solution.