High-pressure measurement and thermodynamic modeling of the carbon dioxide solubility in the aqueous 2-((2-aminoethyl)-amino)-ethanol + sulfolane system at different temperatures

Asadi, Ehsan; Haghtalab, Ali; Shirazizadeh, Habib Allah

doi:10.1016/j.molliq.2020.113650

Cited by 13 publications

(9 citation statements)

References 56 publications

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“…Thus, the impact of physical absorption at high pressures is more significant than at lower pressures. As seen, these results are in excellent agreement with the conclusions of Roberts and Mather, 41 Asadi et al, 18 and Zong and Chen. 14 As demonstrated in Figures 4−6, the graph crossover points of the partial pressure vs gas loading are detected at gas loadings higher than unity and various temperatures and compositions.…”

Section: Methodssupporting

confidence: 90%

“…In a previous work, we have verified the test method and the experimental setup employed in the present study. To validate the solubility measurements, we determined the solubility of gas CO 2 in the H 2 O + AEEA (30 wt %) system at 343.15 K and within the partial pressures of CO 2 from approximately 130 to 3550 kPa.…”

Section: Resultssupporting

confidence: 66%

“…However, for the mixed solvent of water + sulfolane + MDEA, at pressures below 3600 kPa, increasing the sulfolane leads to a reduction in the solubility of CO 2 . In another recent research in 2020, a new set of vapor−liquid equilibrium (VLE) data for six different combinations of AEEA + sulfolane was produced by Asadi et al 18 The experiments were accomplished under isothermal situations at 313.15, 328.15, and 343.15 K and within the broad CO 2 partial pressure range from 100 to 5500 kPa. Their results have shown that by increasing the weight percentage of either sulfolane or AEEA, the CO 2 solubility was enriched.…”

Section: Introductionmentioning

confidence: 99%

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Experimental Measurement of Carbon Dioxide Solubility in Aqueous N-Methyldiethanolamine + 2-(2-Aminoethylamino) Ethanol + Sulfolane and Diethanolamine + 2-(2-Aminoethylamino) Ethanol + Sulfolane Hybrid Solvents at Various Temperatures and High Pressure

2020

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The sets of vapor–liquid equilibrium (VLE) data for CO2 solubility in a combination of (N-methyldiethanolamine (MDEA) + 2-(2-aminoethylamino) ethanol (AEEA)) and (diethanolamine (DEA) + AEEA) as a chemical solvent blended with sulfolane as a physical solvent are acquired at 313.15–343.15 K within the CO2 partial pressure range up to 5600 kPa. The measurements are fulfilled for two different hybrid solvents of MDEA + AEEA + sulfolane with the weight compositions of (20–10–10) wt % and (20–10–20) wt % and a mixed solvent of DEA + AEEA + sulfolane with (20–10–10) wt %. It is deduced that CO2 loading was enhanced by substituting the MDEA with DEA, diminishing the temperature, and raising the pressure. Besides, increasing the sulfolane concentration in the aqueous system of MDEA + AEEA + sulfolane leads to enrichment in the effectiveness of the solution in CO2 absorption in the high loading region. In contrast, at low pressures, it adversely affects the acid gas loading. Moreover, it was displayed that at the same total mole of alkanolamines and sulfolane, the CO2 solubilities of AEEA + sulfolane and AEEA + MDEA + sulfolane are higher than those of AEEA + MDEA + sulfolane and MDEA + sulfolane, respectively. Therefore, it could be claimed that AEEA presents a better performance in CO2 capturing than MDEA. Besides, it was demonstrated that AEEA + sulfolane represents a higher capability in CO2 elimination than DEA + AEEA + sulfolane. Thus, the ability of DEA to remove CO2 is lesser than AEEA. Altogether, the degree of alkanolamines’ selectivity toward CO2 is found as AEEA > MDEA > DEA.

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Section: Methodssupporting

confidence: 90%

Section: Resultssupporting

confidence: 66%

Section: Introductionmentioning

confidence: 99%

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Experimental Measurement of Carbon Dioxide Solubility in Aqueous N-Methyldiethanolamine + 2-(2-Aminoethylamino) Ethanol + Sulfolane and Diethanolamine + 2-(2-Aminoethylamino) Ethanol + Sulfolane Hybrid Solvents at Various Temperatures and High Pressure

2020

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“…For each experiment, a thermostatic circulator was used to set the reactor’s temperature. Following equilibrating after a specific time, the equilibrium cell’s pressure was recorded as the solvent’s vapor pressure ( P V ) using the 0–100 kPa pressure transducer …”

Section: Methodsmentioning

confidence: 99%

“…Following equilibrating after a specific time, the equilibrium cell's pressure was recorded as the solvent's vapor pressure (P V ) using the 0−100 kPa pressure transducer. 34 We injected the CO 2 gas into the double-wall reactor through a gas-storage vessel to carry out the solubility experiment. The mole number of the injected CO 2 (n CO 2 ) into the equilibrium cell was calculated employing the Soave−Redlich−Kwong equation of state (SRK EoS) by using the monitored values of the temperature (T) and pressure (P) in advance and afterward the CO 2 injection.…”

Section: Introductionmentioning

confidence: 99%

High-Pressure Vapor–Liquid Equilibrium Measurement of CO₂ Solubility into Aqueous Solvents of (Diisopropylamine + L-Lysine) and (Diisopropylamine + Piperazine + L-Lysine) at Different Temperatures and Compositions

2021

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The new experimental vapor−liquid equilibrium data for CO 2 solubility into two different combinations of alkanolamine + amino acid, alkanolamine + chemical additive, and one aqueous alkanolamine were attained at 328.15, 343.15, and 363.15 K and in the CO 2 partial pressure range from 40 to 3800 kPa. The measurements are performed for the mixture of diisopropylamine (DIPA) + L-lysine with the compositions of (37.5−2.19) wt %, (35.0−4.38) wt %, and (30−8.77) wt %, and a blend of DIPA + piperazine (PZ) + L-lysine with the compositions (30.0−7.5−2.19) wt % and (30.0−5−4.38) wt %. Besides, the CO 2 partial pressure against its loading was acquired for the aqueous systems of DIPA + PZ (30.0−10.0) wt % and DIPA (40.0) wt %. The results illustrate that the CO 2 loading in the solvents was enlarged with declining temperature and increasing pressure. For the system of DIPA (40.0) wt %, it was deduced that CO 2 solubility improves by substituting the 10 wt % of DIPA with PZ. In other comparisons, we found that, at a constant weight percentage of L-lysine and water and total alkanolamines, the degree of selectivity toward CO 2 solubility is as follows: DIPA + PZ + L-lysine + H 2 O > DIPA + L-lysine + H 2 O. Accordingly, the ability of PZ to remove CO 2 is more than DIPA. Besides, a quadratic equation is employed to correlate the CO 2 partial pressure versus its loading so that the calculated values reveal a great agreement with the experimental data. Lastly, the Clausius−Clapeyron equation is applied to compute and compare the enthalpy of CO 2 absorption for the current systems. We found that, among the utilized solvents, the aqueous systems of DIPA + L-lysine + water (30−10−60) wt % and DIPA+ water (40.0-60.0) wt % have the maximum and minimum heats of absorption, respectively.

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Investigating the effect of blending of diamine and alkanolamine for CO2 capture: Experiment and thermodynamic modeling of CO2-AEEA-DEA-H2O system

Mazari

Kang

Devkota

et al. 2023

Chemical Engineering Journal

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High-pressure measurement and thermodynamic modeling of the carbon dioxide solubility in the aqueous 2-((2-aminoethyl)-amino)-ethanol + sulfolane system at different temperatures

Cited by 13 publications

References 56 publications

Experimental Measurement of Carbon Dioxide Solubility in Aqueous N-Methyldiethanolamine + 2-(2-Aminoethylamino) Ethanol + Sulfolane and Diethanolamine + 2-(2-Aminoethylamino) Ethanol + Sulfolane Hybrid Solvents at Various Temperatures and High Pressure

Experimental Measurement of Carbon Dioxide Solubility in Aqueous N-Methyldiethanolamine + 2-(2-Aminoethylamino) Ethanol + Sulfolane and Diethanolamine + 2-(2-Aminoethylamino) Ethanol + Sulfolane Hybrid Solvents at Various Temperatures and High Pressure

High-Pressure Vapor–Liquid Equilibrium Measurement of CO₂ Solubility into Aqueous Solvents of (Diisopropylamine + L-Lysine) and (Diisopropylamine + Piperazine + L-Lysine) at Different Temperatures and Compositions

Investigating the effect of blending of diamine and alkanolamine for CO2 capture: Experiment and thermodynamic modeling of CO2-AEEA-DEA-H2O system

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High-pressure measurement and thermodynamic modeling of the carbon dioxide solubility in the aqueous 2-((2-aminoethyl)-amino)-ethanol + sulfolane system at different temperatures

Cited by 13 publications

References 56 publications

Experimental Measurement of Carbon Dioxide Solubility in Aqueous N-Methyldiethanolamine + 2-(2-Aminoethylamino) Ethanol + Sulfolane and Diethanolamine + 2-(2-Aminoethylamino) Ethanol + Sulfolane Hybrid Solvents at Various Temperatures and High Pressure

Experimental Measurement of Carbon Dioxide Solubility in Aqueous N-Methyldiethanolamine + 2-(2-Aminoethylamino) Ethanol + Sulfolane and Diethanolamine + 2-(2-Aminoethylamino) Ethanol + Sulfolane Hybrid Solvents at Various Temperatures and High Pressure

High-Pressure Vapor–Liquid Equilibrium Measurement of CO2 Solubility into Aqueous Solvents of (Diisopropylamine + L-Lysine) and (Diisopropylamine + Piperazine + L-Lysine) at Different Temperatures and Compositions

Investigating the effect of blending of diamine and alkanolamine for CO2 capture: Experiment and thermodynamic modeling of CO2-AEEA-DEA-H2O system

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High-Pressure Vapor–Liquid Equilibrium Measurement of CO₂ Solubility into Aqueous Solvents of (Diisopropylamine + L-Lysine) and (Diisopropylamine + Piperazine + L-Lysine) at Different Temperatures and Compositions