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The equilibrium solubility of mixture of carbon dioxide and hy- drogen sulfide in aqueous mixtures of diethanolamine ( DEA) with sterically hindered amine, 2-amino-2-methyl-1-propanol (AMP) has been measured at 40 ℃ and 80 ℃ at partial pressure of the acid gases between 0.1 and 200kPa.The systems selected for this study are six blended amines solutions (total 30wt%) consisting of 30 wt﹪ DEA, 24 wt﹪DEA+6 wt﹪AMP, 18 wt﹪DEA +12 wt﹪AMP, 12 wt﹪ DEA+18wt﹪AMP,6wt﹪DEA+24 wt﹪AMP,30wt﹪ AMP.The solubility mo- del of Deshmukh and Mather has been used to represent the data. The model reproduces reasonably the equilibrium partial pressur- es of CO2 and H2S above the solutions for the systems tested.
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