TY - GEN

T1 - Viscosity prediction of the carbon dioxide loaded aqueous solutions of alkanolamines

T2 - Poster Sessions 2017 - Core Programming Area at the 2017 AIChE Annual Meeting

AU - Matin, Naser S.

AU - Remias, Joseph E.

AU - Liu, Kunlei

PY - 2017

Y1 - 2017

N2 - The Eyring absolute rate theory (EART) based methodology has been used for estimation of the dynamic viscosity of CO2 loaded aqueous solutions of a representative amine-monoethanolamine (MEA). The electrolyte-NRTL model is applied to estimate the activation free energy of the solution and consequently enable prediction of the dynamic viscosity of the electrolyte CO2:MEA:H2O system. According to EART for the dynamic viscosity of asolution, (Equation presented). η, η,0, V, V0, R and Δ F≠are the dynamic viscosity of solution and pure solvent, the solution and pure solvent molar volume, gas constant and activation free energy for the flow process, respectively. The Δ F≠was generally related to the Gibbs free energy of mixing, f(Δ Gmix ≠). (Equation presented) (Figure presented) Solution pH and Ionic Strength, MEA 30% (Figure presented) Effects of viscosity on the liquid side mass transfer coefficient (Figure presented) In equation (2), ΔGid, mix ≠, can be calculated through the system speciation which is available from thermodynamic modeling. (e.g. Aspen Plus®). ΔGex ≠, is related to the solution components (species) mole fractions and their corresponding activity coefficients. For a multicomponent mixture, Eq (1) can be written as, (Equation presented) Xi, Vi,0 and ηi are the mole fraction of component i, molar volume and viscosity of the pure chemical i, respectively.

AB - The Eyring absolute rate theory (EART) based methodology has been used for estimation of the dynamic viscosity of CO2 loaded aqueous solutions of a representative amine-monoethanolamine (MEA). The electrolyte-NRTL model is applied to estimate the activation free energy of the solution and consequently enable prediction of the dynamic viscosity of the electrolyte CO2:MEA:H2O system. According to EART for the dynamic viscosity of asolution, (Equation presented). η, η,0, V, V0, R and Δ F≠are the dynamic viscosity of solution and pure solvent, the solution and pure solvent molar volume, gas constant and activation free energy for the flow process, respectively. The Δ F≠was generally related to the Gibbs free energy of mixing, f(Δ Gmix ≠). (Equation presented) (Figure presented) Solution pH and Ionic Strength, MEA 30% (Figure presented) Effects of viscosity on the liquid side mass transfer coefficient (Figure presented) In equation (2), ΔGid, mix ≠, can be calculated through the system speciation which is available from thermodynamic modeling. (e.g. Aspen Plus®). ΔGex ≠, is related to the solution components (species) mole fractions and their corresponding activity coefficients. For a multicomponent mixture, Eq (1) can be written as, (Equation presented) Xi, Vi,0 and ηi are the mole fraction of component i, molar volume and viscosity of the pure chemical i, respectively.

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M3 - Conference contribution

AN - SCOPUS:85048451981

T3 - Poster Sessions 2017 - Core Programming Area at the 2017 AIChE Annual Meeting

SP - 1143

BT - Poster Sessions 2017 - Core Programming Area at the 2017 AIChE Annual Meeting

Y2 - 29 October 2017 through 3 November 2017

ER -