These guidelines illustrate what every process engineer should know about solvent contamination and loss for sour gas processing facilities
Most sour-gas processing facilities separate hydrogen sulfide
(H2S) and carbon dioxide (CO2) from raw gas
through chemical absorption using alkanolamines (or "amines"). The
prime alkanolamines are: monoethanolamine (MEA), diethanolamine
(DEA), methyldiethanolamine (MDEA), diisopropanolamine (DIPA), and
diglycolamine (DGA). The amine processes are cyclical-involving
both absorption and desorption steps-to reuse absorbents. Because
these processes are closed loop, nonregenerable contaminants
accumulate within the system and can cause reduced processing
efficiencies and operational problems.
Operational difficulties include: corrosion, foaming, solid
deposition, losses of valuab
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