Also, the reboiler temperature of the regenerator (from 129 to 135 ☌), amine degradation and required steam and consequently corrosion (1.10 to 17.20 mpy) were increased. The results showed that in the presence of 25% of MEG in amine loop, H 2S absorption from the sour gas was increased from 1.09 to 3.78 ppm. This paper aims to address the points where MEG has negative effects on gas sweetening process and what the practical ways to reduce its effect are. MEG is commonly injected into the system to avoid hydrate formation while a few amounts of MEG is usually transferred to amine gas sweetening plant. The gas sweetening unit of phase 2 and 3 in South Pars Gas Field (Asalouyeh, Iran) was first simulated to investigate the effect of mono ethylene glycol (MEG) in the amine loop.
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