Model of vapor-liquid equilibria for aqueous acid gas-alkanolamine systems. 2. Representation of hydrogen sulfide and carbon dioxide solubility in aqueous MDEA and carbon dioxide solubility in aqueous mixtures of MDEA with MEA or DEA

Austgen, David M.; Rochelle, Gary T.; Chen, Chau‐Chyun

doi:10.1021/ie00051a016

Cited by 293 publications

(243 citation statements)

References 16 publications

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“…The phase equilibrium between vapor and liquid phase can be expressed by equation 4 (Austgen et al, 1991 In the Peng Robinson EoS model, the parameters of binary interaction between the molecules are set to zero, while their critical properties are retrieved from Yaws and Narasimhan (2009). The error generated by setting the interaction parameters to zero is compensated by regressing the parameters of the activity coefficient models against the experimental data.…”

Section: Thermodynamic Equilibrium Modellingmentioning

confidence: 99%

VLE data and modelling of aqueous N,N-diethylethanolamine (DEEA) solutions

Monteiro

Pinto

Zaidy

et al. 2013

International Journal of Greenhouse Gas Control

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Section: Thermodynamic Equilibrium Modellingmentioning

confidence: 99%

VLE data and modelling of aqueous N,N-diethylethanolamine (DEEA) solutions

Monteiro

Pinto

Zaidy

et al. 2013

International Journal of Greenhouse Gas Control

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“…Thus, for the development of new cost effective CO 2 capture processes, many research groups have focused on the reduction of regeneration energy by suggesting mixture solvent systems such as mixed amine systems (Aronu et al, 2010;Austgen et al, 1991;Barzagli et al, 2011;Bishnoi and Rochelle, 2002b;Bougie and Iliuta, 2010;Brúder et al, 2012;Dubois and Thomas, 2012;Seo and Hong, 1996).…”

Section: Introductionmentioning

confidence: 99%

Experimental study on phase change solvents in CO2 capture by NMR spectroscopy

Ciftja

Hartono

Svendsen

2013

Chemical Engineering Science

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Abstract2-(Diethylamino)ethanol (DEEA) and 3-(Methylamino) propylamine (MAPA) in combination may represent a promising absorbent system for CO 2 capture due to high CO 2 loading capacity, high equilibrium temperature sensitivity, low energy requirement for regeneration and relatively high reaction rate.Three different systems: DEEA-CO 2 -H 2 O; MAPA-CO 2 -H 2 O and DEEA-MAPA-CO 2 -H 2 O were studied quantitatively by NMR spectroscopy and the data are reported in the present work. The main products quantified for these systems are: carbonate-bicarbonate for the DEEA-CO 2 -H 2 O system; primary, secondary carbamate, dicarbamate for the MAPA-CO 2 -H 2 O system, and primary/ secondary carbamate, dicarbamate, carbonate/bicarbonate in blended DEEA-MAPA-CO 2 -H 2 O. The speciation data of the three systems were measured and reported in the present work. The blended system of 5M DEEA-2M MAPA can form two liquid phases after being loaded with CO 2 and both phases were analyzed quantitatively by NMR spectroscopy. The experimental data shows that the lower phase is rich in CO 2 and MAPA while the upper phase was lean in CO 2 and rich in DEEA. The ratio DEEA-MAPA in the lower phase increases with increasing partial pressure whereas for the upper phase the opposite is true.

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“…Non-idealities of species in gas phase and liquid phase should be taken into account in the thermodynamic computation of multicomponent complex aqueous solution like H 2 S-NG-(MEA-MDEA-PZ)-water system. In this work, the Soave-Redlich-Kwong (SRK) equation of state [20] is used to account for the nonideality of gas phase, and the electrolyte-NRTL equation [21,22] is adopted to describe that of the liquid phase. Herein, a brief description is made as follows.…”

Section: Correlation Of Experimental Data With Thermodynamics Modelmentioning

confidence: 99%

“…For similar weak electrolyte solutions, this model had been widely used to correlate the gas-liquid equilibrium in literatures [16,22,[26][27][28]. The parameters, including relevant coefficients and interaction parameters in the model could be also obtained in the literatures.…”

Section: Activity Coefficient Of Component Imentioning

confidence: 99%

Influence of MEA and piperazine additives on the desulfurization ability of MDEA aqueous for natural gas purification

Shi

Shan

et al. 2016

Int J Ind Chem

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The influence of monoethanolamine (MEA) and piperazine added into methyldiethanolamine (MDEA) aqueous solution on the desulfurization of natural gas was investigated by the method of equilibrium data determination in this paper. Four kinds of equilibrated systems, i.e. H 2 S-NG-MEA-water, H 2 S-NG-MDEA-water, H 2 S-NG-(MEA-MDEA)-water, H 2 S-NG-(MEA-MDEA-PZ)-water at the temperature ranging from 298.15 to 333.15 K were measured in a glass-jacketed gas absorption cell with a double-drive impeller device. The results show that the H 2 S partial pressure increases with the increase of H 2 S loading in liquid phase along an isotherm. The addition of MEA and PZ is beneficial for improving the desulfuration ability of MDEA. The ability of H 2 S absorption for the four mixed alkanolamine systems is MEA [ (MEA-MDEA-PZ) [ (MEA-MDEA) [ MDEA according to the order of size. The four equilibrium data can be well correlated with the Soave-Redlich-Kwong equation of state and electrolyte-NRTL activity coefficient model. The overall mean relative errors of total pressure and H 2 S partial pressure between the calculated and experimental data of the four systems are 3.30 and 3.07 %, respectively. The experimental and calculated results are very useful for desulfuration and purification process of natural gas or other industrial gases.

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Model of vapor-liquid equilibria for aqueous acid gas-alkanolamine systems. 2. Representation of hydrogen sulfide and carbon dioxide solubility in aqueous MDEA and carbon dioxide solubility in aqueous mixtures of MDEA with MEA or DEA

Cited by 293 publications

References 16 publications

VLE data and modelling of aqueous N,N-diethylethanolamine (DEEA) solutions

VLE data and modelling of aqueous N,N-diethylethanolamine (DEEA) solutions

Experimental study on phase change solvents in CO2 capture by NMR spectroscopy

Influence of MEA and piperazine additives on the desulfurization ability of MDEA aqueous for natural gas purification

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