MODELLING OF EQUILIBRIUM SOLUBILITY OF CO2 AND H2S IN AQUEOUS AMINO METHYL PROPANOL (AMP) SOLUTIONS

Information on acid gas solubility in solvents utilized is needed for the design of gas plants. A mathematical model for the prediction of equilibrium solubility of CO₂ and H₂S in aqueous 2-amino-2-methyl-l-propanol (AMP) solutions is presented. The equilibrium constant, K₁ governing the main amine reaction is expressed as a function of not only temperature but also acid gas partial pressure and AMP concentration. Model predictions agree favourably with experimental data.