The simplified Clegg−Pitzer equations are used to correlate the solubility data for CO 2 and H 2 S over a wide range of solvent concentrations (12−50 wt % methyldiethanolamine (MDEA) aqueous solutions), temperature (25−120 °C), partial pressure of acid gases (0.001−5290 kPa), and acid gas loading (0.001−1.0 mol/mol) from different authors. The interaction parameters thus obtained can be used to predict the solubility data for the mixed acid gases in CO 2 −H 2 S−MDEA−H 2 O systems without any additional adjustable parameters.
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Li et al. (1997) studied this question.
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