Solubility of Single Gases Carbon Dioxide and Hydrogen Sulfide in Aqueous Solutions of <i>N</i>-Methyldiethanolamine in the Temperature Range 313−413 K at Pressures up to 5 MPa

Kuranov, George; Rumpf, Bernd; Smirnova, N. A.; Maurer, Gerd

doi:10.1021/ie950538r

Cited by 176 publications

(204 citation statements)

References 23 publications

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“…Liquid sampling is undertaken with a 2 mL injection syringe connected with the liquid sampling valve (11), and analyzed by the methods of weighing and chemical iodine titration. Gas sampling is done quantitatively with a eudiometer (16).…”

Section: Apparatus and Experimental Methodsmentioning

confidence: 99%

“…The analysis method of gas phase: Firstly, 50 mL 0.1 mol/L zinc acetate solution is added into the leveling bottle (19). Keep the liquid interface of eudiometer (16) and leveling bottle (19), and record the initial scale value. Open the gas sampling valve (17) and let the gas phase into the eudiometer, then close the sampling valve and record the end reading.…”

Section: Apparatus and Experimental Methodsmentioning

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%

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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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Section: Apparatus and Experimental Methodsmentioning

confidence: 99%

Section: Apparatus and Experimental Methodsmentioning

confidence: 99%

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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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“…Kuranov et al [8], and Kamps et al [9], used Pitzer's equation correlate the VLE data of the MDEA-H 2 O-CO 2 system. Faramarzi et al [10], used the extended UNIQUAC model [11] to represent VLE for CO 2 absorption in aqueous MDEA, MEA, and mixtures of the two alkanolamines.…”

Section: Introductionmentioning

confidence: 99%

Thermodynamics of CO2-MDEA using eNRTL with Differential Evolution Algorithm

Vivier¹,

Kamalpour²,

Mehablia³

2011

J Thermodyn Catal

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“…, which define the variables B and C, are fitted from single-salt data (Plummer et al, 1988) and the literature values of these parameters are tabulated in Kuranov et al (1996) and Kamps et al (2000). For any salt containing a monovalent ion such as 1-1 (e.g.…”

mentioning

confidence: 99%

Incorporating Pitzer equations in a new thermodynamic model for the prediction of acid gases solubility in aqueous alkanolamine solutions

Alhseinat¹,

Mota-Martinez²,

Peters³

et al. 2014

Journal of Natural Gas Science and Engineering

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a b s t r a c tIn gas sweetening, acid gases such as CO 2 and/or H 2 S are usually removed by "chemical" absorption through aqueous amine solutions such as N-Methyldiethanolamine (MDEA) solution. Reliable prediction of equilibrium properties (vaporeliquid equilibrium and species distribution) is needed for a rigorous design of such absorption processes. Information on energy requirements can also be obtained from a reliable vaporeliquid equilibrium thermodynamic model. The currently used methods for correlating/ predicting the simultaneous solubility of H 2 S and CO 2 in aqueous MDEA solutions require accurate experimental solubility data of single and mixed gases which, in general, confine their applicability in the experimental region. The purpose of this paper is to develop a new theoretical thermodynamic model based on incorporating thermodynamic relationships that correlates the equilibrium and solubility constants to the Gibbs free energy of reaction, leading to an enhanced predictive capability of the model. In this work the Pitzer model is used to account for activity and specific ion interactive forces. This will allow taking into account the effect of the presence of all cations and anions such as thermally stable salts, dissolved organic species and amine degradation products that are usually encountered in absorption units. The suggested model has been verified through comparison with literature data for CO 2 and H 2 S absorption. The presented model can be a very powerful tool that could be of significant importance in the design of amine absorption processes as well as in simulations of the operating variables for optimization of gas sweetening systems.

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Solubility of Single Gases Carbon Dioxide and Hydrogen Sulfide in Aqueous Solutions of N-Methyldiethanolamine in the Temperature Range 313−413 K at Pressures up to 5 MPa

Cited by 176 publications

References 23 publications

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

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

Thermodynamics of CO2-MDEA using eNRTL with Differential Evolution Algorithm

Incorporating Pitzer equations in a new thermodynamic model for the prediction of acid gases solubility in aqueous alkanolamine solutions

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