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contributor.authorKundu, M-
contributor.authorChitturi, A-
contributor.authorBandyopadhyay, S S-
identifier.citationCan. J. Chem. Eng. 86:117–126, 2008en
descriptionCopyright belongs to Canadian Society for Chemical Engineeringen
description.abstractThe design of sour-gas treating processes with alkanolamine solvents requires knowledge of the vapour–liquid equilibrium (VLE) of the aqueous acid gas–alkanolamine systems. Representation of the experimental data with a thermodynamically rigorous model is required, so that one can systematically correlate and predict the VLEs of these systems. The modified Clegg–Pitzer equations have been used to correlate and predict the VLE of CO2 in the aqueous N-methyldiethanolamine (MDEA) and 2-amino-2-methyl-1-propanol (AMP) systems. Differential evolution (DE), an evolutionary computational technique, has been used for parameter estimation of the developed VLE model in an effort to predict the VLE of CO2 in aqueous MDEA and AMP solutions with a comparable accuracy to that by using the non-traditional simulated annealing (SA) and deterministic technique like Levenberg–Marquardt (LM), if not better. In this work, the DE/rand-best/1/bin strategy has been used for finding near global minimum solutions to the ultivariable optimization problem as a part of the numerical solution of the developed model.La conception des proc´ed´es de traitement des gaz acides avec des solvants de type alkanolamine n´ecessite la connaissance de l’´equilibre vapeur–liquide (VLE) des syst`emes de gaz acides–alkanolamines aqueux. La repr´esentation des donn´ees exp´erimentales avec un mod`ele thermodynamique rigoureux est n´ecessaire pour pouvoir corr´eler et pr´edire syst´ematiquement les ´equilibres vapeur–liquide (ELV) de ces syst`emes. On a utilis´e les ´equations de Clegg–Pitzer modifi´ees pour corr´eler et pr´edire l’´equilibre vapeur–liquide du CO2 dans les syst`emes de Nm ´ethyldi´ethanolamine (MDEA) et amino-2 m´ethyl-2 propanol-1 (AMP) aqueux. L’´evolution iff´erentielle (DE), une technique de calcul par ordinateur ´evolutive, a ´et´e utilis´ee pour l’estimation des param`etres du mod`ele ELV dans le but de pr´edire l’ELV du CO2 dans les solutions aqueuses de MDEA et d’AMP avec une pr´ecision comparable sinon meilleure `a celle obtenue avec la technique non traditionnelle du recuit simul´e (SA) et la technique d´eterministe de Levenberg–Marquardt (LM). Dans ce travail, on a employ´e la strat´egie DE/rand-best/1/bin pour obtenir des solutions au probl`eme d’optimisation multivari´ee proches du minimum global, et qui interviennent dans la r´esolution num´erique du mod`ele propos´e.en
format.extent232925 bytes-
publisherCanadian Society for Chemical Engineeringen
subjectdifferential evolutionen
subjectsimulated annealingen
titlePrediction of Equilibrium Solubility of CO2 in Aqueous Alkanolamines Using Differential Evolution Algorithmen
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