Methyldiethanolamine models

DIPA) and methyldiethanolamine (MDEA) have also been employed. Earlier, Atwood et al. (J 5) proposed a thermodynamic model for the equilibria in I S+alkanol-amine+H20 systems. The central feature of this model is the use of mean ionic activity coefficient. The activity coefficients of all ionic species are assumed to be equal and to be a function only of ionic strengths. Klyamer and Kolesnikova ( 1j[) utilized this model for correlation of equilibria in C02+alkanol-amine+H O systems and Klyamer et al. (J 7) extended it to the H2S+C02+alkanolamine+H20 system. The model is restricted to low pressures as the fugacity coefficients are assumed unity and it has been found that the predictions are inaccurate in the four-component system since the activity coefficients are not equal when a number of different cations and anions are present. 

Rinker, E.B., Ashour, S.S., and Sandall, O.C. Kinetics and modeling ofcarbon dioxide absorption into aqueous soluUons of//-methyldiethanolamine, Chem. Eng. Sci., 50(5) 755-768, 1995. 

Dicko, M. CoqueleL C. fame, C. Northrop, S. Richon, D. 2010, Acid gases partial pressures above 50wt% aqueous methyldiethanolamine solution Experimental work and modeling. Fluid Phase Equilibira, 289, 99-109. 

Kaewsichan L, Al-hofersrai O, Yesavage VF, Selim MS. Predictions of the solubility of acid gasses in monoethanolamine (MEA) and methyldiethanolamine (MDEA) solutions using the electrolye-UNIQUAC model. Fluid Phase Equdih 2001 183 184 159-71. 

Mudhasakul S, Ku HM, Douglas PL. A simulation model of a CO2 absorption process with methyldiethanolamine solvent and piperazine as an activator, hit J Greenh Gas Control 2013 15 134-A1. 

H. Arcis, L. Rodier, K. Ballerat-BusseroUes, J.Y. Coxam, Modeling of (vapor-l- liquid) equilibrium and enthalpy of solution of carbon dioxide (CO2) in aqueous methyldiethanolamine (MDEA) solutions. J. Chem. Thermodyn. 41(6), 783-789 (2009)... 

A.P.-S. Kamps, A. Balaban, M. Jodecke, G. Kuranov, N.A. Smirnova, G. Maurer, Solubility of single gases carbon dioxide and hydrogen sulfide in aqueous solutions of N-methyldiethanolamine at temperatures from 313 to 393 K and pressures up to 7.6 MPa new experimental data and model extension. Ind. Eng. Chem. Res. 40(2), 696-706 (2000)... 

M. Kundu, S.S. Bandyopadhyay, Modelling vapour— Uquid equilibrium of CO2 in aqueous N-methyldiethanolamine through the simulate annealing algorithm. Can. J. Chem. Eng. 83(2), 344-353 (2005)... 

T.R. Carey, J.E. Hermes, G.T. Rochelle, A model of add gas absorption/stripping using methyldiethanolamine with added acid. Gas Sep. Purif. 5 (1991) 95-109. 

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