Amine Gas Treating: H2S and CO2 Removal

Natural gas (also referred to as sour gas) contains a significant amount of hydrogen sulfide (H2S) and carbon dioxide (CO2). 
Amine gas treating, also known as gas sweetening, acid gas removal or amine scrubbing refers to a group of processes that use amines to remove H2S and CO2 from gases. Most acid gas recovery systems use either monoethanolamine (MEA), diethanol-amine (DEA) or methyldiethanolamine (MDEA).

Real-time control of lean amine concentration for appropriate acid gas removal

Vaisala K-PATENTS® Process Refractometer provides in-line measurement of amine solution for instant feedback to indicate any fluctuations in the process. This instant feedback can be used for real-time process control maintaining an optimum amine concentration and acid gas removal as:

• too low MEA will impact the absorption efficiency 
• too high MEA will increase the corrosion of the process equipment.

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