Vapor-liquid equilibrium (VLE) of CO 2 in aqueous solutions of benzylamine: New data and modeling using ENRTL-equation

Mukherjee, Satyajit; Bandyopadhyay, Syamalendu S.; Samanta, Amar Nath

doi:10.1016/j.ijggc.2016.11.008

Cited by 14 publications

(11 citation statements)

References 15 publications

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“…Comparison of VLE data of CO 2 in 30 wt % aqueous BZA (4.0 mol BZA·kg –1 water) solvent of this work using a reaction calorimeter with previously published data using the VLE setup …”

Section: Resultsmentioning

confidence: 82%

“…The heat of absorption of CO 2 in aqueous solutions of single amines (BZA, AEEA) and amine mixtures (BZA + AEEA) were studied as a function of CO 2 loading and temperature using a reaction calorimeter (model: RC1e, Mettler Toledo) system. For the validation of the experimental setup, the vapor–liquid equilibrium (VLE) and the heat of absorption of CO 2 in 30 wt % (4.0 mol BZA·kg –1 water) aqueous BZA and 30 wt % (4.11 mol AEEA·kg –1 water) aqueous AEEA respectively were measured at 313.15 K and compared with the literature data, , which are presented in Table and shown in Figures and . It can be observed from Figures and that the experimental data are in good agreement with the data available in the literature except at low CO 2 partial pressure.…”

Section: Resultsmentioning

confidence: 99%

“…Although the CO 2 solubility and the rate kinetics data in aqueous benzylamine (BZA) as a function of temperature, amine concentration, and partial pressure of CO 2 were presented in our previous work, , no experimental data on direct calorimetric measurements of enthalpy of CO 2 absorption studies are available for the system (CO 2 + BZA + H 2 O) in the open literature. Ma’mun and co-researchers − have performed a screening test with a large number of amine solvents, and based on their study, they selected (2-aminoethyl)ethanolamine (AEEA) as a potential diamine for CO 2 removal from postcombustion flue gases with high absorption rate and high absorption capacity.…”

Section: Introductionmentioning

confidence: 99%

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Heat of Absorption of CO₂ and Heat Capacity Measurements in Aqueous Solutions of Benzylamine, N-(2-Aminoethyl)-ethanolamine, and Their Blends Using a Reaction Calorimeter

Mukherjee

Samanta

2019

J. Chem. Eng. Data

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In this study, the heats of absorption of CO2 in aqueous benzylamine (BZA), N-(2-aminoethanolamine) (AEEA), and their blends were measured using an automated reaction calorimeter in the temperature range of 303.15–343.15 K. The experimental concentrations of aqueous amine solutions were in the range of (0.49–4.0) mol BZA·kg–1 water, (0.51–4.11) mol AEEA·kg–1 water, (2.03 mol BZA + 2.09 mol AEEA)·kg–1 water, and (2.71 mol BZA + 1.39 mol AEEA)·kg–1 water. The heat capacities of the unloaded aqueous solutions of BZA, AEEA, and (BZA + AEEA) were also measured in similar temperature and concentration ranges to those for heat of absorption. The experimental heat of absorption of CO2 was presented as a function of CO2 loading, temperature, and amine concentration.

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“…Comparison of VLE data of CO 2 in 30 wt % aqueous BZA (4.0 mol BZA·kg –1 water) solvent of this work using a reaction calorimeter with previously published data using the VLE setup …”

Section: Resultsmentioning

confidence: 82%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Heat of Absorption of CO₂ and Heat Capacity Measurements in Aqueous Solutions of Benzylamine, N-(2-Aminoethyl)-ethanolamine, and Their Blends Using a Reaction Calorimeter

Mukherjee

Samanta

2019

J. Chem. Eng. Data

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“…Schematic representation of the experimental setup is shown in Figure ,. which is used in our previous work . The experimental setup consists of a high‐pressure stainless steel equilibrium cell (405 × 10 −6 m 3 ) connected to a high‐pressure stainless steel gas buffer cell (751 × 10 −6 m 3 ).…”

Section: Methodsmentioning

confidence: 99%

Experimental measurements and modelling of CO₂ solubility in aqueous mixtures of benzylamine and N‐(2‐aminoethyl) ethanolamine

Mukherjee

Bandyopadhyay

Samanta

2018

Asia-Pacific J Chem Eng

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In this work, carbon dioxide solubility in N-(2-aminoethyl) ethanolamine (AEEA) activated aqueous benzylamine (BZA) solutions are studied using a stirred-cell reactor in the temperature and pressure range of 313.15-333.15 K and 0.2-219 kPa, respectively. AEEA is a linear diamine with a primary and secondary amine groups, and BZA is a primary cyclic amine. The concentration of the aqueous blends used are (20mass% BZA + 10mass% AEEA), (24mass% BZA + 6mass% AEEA), and (28mass% BZA + 2mass% AEEA).Density and viscosity of unloaded aqueous amine blends are also measured in experimental temperature and concentration ranges and correlated using Joubian-Acree mathematical model. Model-predicted density and viscosity data are in good agreement with experimental results showing 0.05% and 3.41% AAD, respectively. To correlate experimental vapor-liquid-equilibrium data, Kent-Eisenberg (KE), artificial neural network (ANN), and soft models are used. Equilibrium constants of monocarbamate formation reaction of BZA and AEEA are regressed as a function of temperature and CO 2 loading to fit the experimental data with KE model expression. KE model is also utilized to estimate the pH of CO 2 loaded aqueous amine solutions. ANN model is found to predict CO 2 solubility with better accuracy (1.56% AAD) in comparison of KE model (8.27% AAD) and soft model (15.5%). The CO 2 absorption capacity of (20mass% BZA + 10mass% AEEA) solvent (~0.8 mol CO 2 /mol amine) is higher than that of monoethanolamine (~0.5 mol CO 2 /mol amine).Heats of absorption values of (BZA + AEEA) solvents (~25 kJ/mol CO 2 ) predicted from Gibbs-Helmholtz relationship are found to be lower than that of MEA (~87 kJ/mol CO 2 ) and PZ (~66 kJ/mol CO 2 ).

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“…The electrolyte nonrandom two-liquid (ENRTL) theory and electrolyte NRTL activity coefficient model (GMENRTL) are often used to predict the vapor–liquid equilibrium and the energy balance for systems, respectively . In reported amine-construction simulations, − molecule–molecule NRTL parameters, especially those with H 2 O, are emphasized.…”

Section: Introductionmentioning

confidence: 99%

Process Simulations of the Direct Non-Aqueous Gas Stripping Process for CO₂ Desorption

Yang

Yü

Wang

et al. 2019

Ind. Eng. Chem. Res.

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The integration of the direct steam stripping (DSS) process with organic working fluids promises a significant reduction in the energy penalty for CO 2 capture processes. This work investigates the mechanisms of mass transfer enhancement in the direct pentane stripping (DPS) process using simulation methods. Through regressing the molecule−molecule interaction parameters, a quaternary system thermodynamic model (QSTM) is developed to successfully predict the vapor−liquid equilibrium of the amine/CO 2 −pentane/H 2 O system. Three typical solvents, monoethanolamine (MEA), methyldiethanolamine (MDEA), and 2-amino-2-methyl-1-propanol (AMP), are studied in this work. The DPS process using 30 wt % MEA, AMP, and MDEA exhibits solvent regeneration energies of 2.55, 2.65, and 2.01 GJ/t of CO 2 , respectively, under the optimal conditions, which are 34, 32, and 48% lower than that of the conventional MEA-based process, respectively. DPS using MDEA shows an energy advantage over the other two solvents because of the high CO 2 equilibrium partial pressure and low reaction heat of MDEA. The temperature and CO 2 partial pressure profiles along the stripper reveal a flashing process at the top of the stripper, leading to the intensive desorption of CO 2 . Furthermore, DPS exhibits a low-temperature regeneration property, which owes to the high volumetric mass transfer driving force provided by pentane. To achieve a minimum solvent regeneration energy, DPS exhibits a lower CO 2 lean loading compared to DSS, which is of benefit in lowering the investment of the absorber and the heat exchangers. In the future, a techno-economic analysis on DPS is recommended to prepare it for largescale implementation.

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Vapor-liquid equilibrium (VLE) of CO 2 in aqueous solutions of benzylamine: New data and modeling using ENRTL-equation

Cited by 14 publications

References 15 publications

Heat of Absorption of CO₂ and Heat Capacity Measurements in Aqueous Solutions of Benzylamine, N-(2-Aminoethyl)-ethanolamine, and Their Blends Using a Reaction Calorimeter

Heat of Absorption of CO₂ and Heat Capacity Measurements in Aqueous Solutions of Benzylamine, N-(2-Aminoethyl)-ethanolamine, and Their Blends Using a Reaction Calorimeter

Experimental measurements and modelling of CO₂ solubility in aqueous mixtures of benzylamine and N‐(2‐aminoethyl) ethanolamine

Process Simulations of the Direct Non-Aqueous Gas Stripping Process for CO₂ Desorption

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Vapor-liquid equilibrium (VLE) of CO 2 in aqueous solutions of benzylamine: New data and modeling using ENRTL-equation

Cited by 14 publications

References 15 publications

Heat of Absorption of CO2 and Heat Capacity Measurements in Aqueous Solutions of Benzylamine, N-(2-Aminoethyl)-ethanolamine, and Their Blends Using a Reaction Calorimeter

Heat of Absorption of CO2 and Heat Capacity Measurements in Aqueous Solutions of Benzylamine, N-(2-Aminoethyl)-ethanolamine, and Their Blends Using a Reaction Calorimeter

Experimental measurements and modelling of CO2 solubility in aqueous mixtures of benzylamine and N‐(2‐aminoethyl) ethanolamine

Process Simulations of the Direct Non-Aqueous Gas Stripping Process for CO2 Desorption

Contact Info

Product

Resources

About

Heat of Absorption of CO₂ and Heat Capacity Measurements in Aqueous Solutions of Benzylamine, N-(2-Aminoethyl)-ethanolamine, and Their Blends Using a Reaction Calorimeter

Heat of Absorption of CO₂ and Heat Capacity Measurements in Aqueous Solutions of Benzylamine, N-(2-Aminoethyl)-ethanolamine, and Their Blends Using a Reaction Calorimeter

Experimental measurements and modelling of CO₂ solubility in aqueous mixtures of benzylamine and N‐(2‐aminoethyl) ethanolamine

Process Simulations of the Direct Non-Aqueous Gas Stripping Process for CO₂ Desorption