JOURNAL OF CHEMICAL THERMODYNAMICS
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2018
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IF 2.631
Hui Li,Hui Guo,Yangyang Bian,Yue Zhao,Shufeng Shen
A mixture system of water-lean amino acid salts (AAS) using ethylene glycol (EG) as a solvent has potential use for CO 2 capture to reduce energy consumption. In this work, physicochemical properties such as density, viscosity and N 2 O solubility of potassium prolinate (ProK) or potassium lysinate (LysK) + water + EG solutions were measured over the temperature range from (303.15 to 353.15) K and molality range from (0.481 to 4.331) mol·kg −1 . Partially CO 2 loaded solutions were also investigated. Densities and viscosities of solutions increase with the increasing molality of AAS and CO 2 , but decrease with the increasing temperature. The use of EG in the aqueous AAS systems replacing water can substantially increase the N 2 O solubility. The Henry’s constants of N 2 O for water-lean AAS solutions were calculated and compared with those for aqueous AAS solutions. These experimental data of properties were correlated using empirical correlations as a function of temperature, molality of AAS and/or CO 2 . The experimental results and the predictions from the models matched well each other for both ProK-based and LysK-based water lean systems, with AAD within 0.12% for density, 2.36% for viscosity and 2.0% for N 2 O solubility respectively.
研究领域:
化学工程
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环境科学
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DOI
高影响因子
JOURNAL OF CHEMICAL THERMODYNAMICS
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2019
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IF 2.29
Hui Guo,Xiaoqin Shi,Shufeng Shen
Non-aqueous mixtures of monoethanolamine (MEA) with glycol ethers as low viscosity absorbents have potential advantages for CO 2 capture. In this work, physical solubility of N 2 O and CO 2 in glycol ethers (2-methoxyethanol and 2-ethoxyethanol) and their blends with MEA was measured and correlated at temperatures ranging from (293.15 to 333.15) K. Physical solubility of CO 2 in the blends was also estimated by N 2 O/CO 2 analogy method. A mathematic model based on the reaction mechanism was proposed to interpret the vapour-liquid equilibrium data for the systems of CO 2 /MEA/glycol ether solution. Results show that glycol ethers have greater ability to dissolve CO 2 than glycols and water. The apparent chemical equilibrium constant was obtained and correlated as a function of temperature by non-linear regression. The proposed model could reasonably fit the experimental data with an average absolute deviation within 10%. The heat of absorption of CO 2 in MEA/glycol ether systems was also calculated.
研究领域:
化学工程
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环境科学
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物理化学
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能源技术
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分离科学
✓ 已验证
DOI
高影响因子
JOURNAL OF CHEMICAL AND ENGINEERING DATA
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2024
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IF 2
Xin Yin,Jing Wang,Shufeng Shen
The water-lean absorbent of dimethyl sulfoxide (DMSO)/2-(butylamino)ethanol (BAE)/H2O has recently been proposed for energy-efficient CO2 capture. The CO2/N2O analogy method can provide important fundamental data for its kinetic study. In this work, the physical solubility of N2O and CO2 in DMSO was measured in a static equilibrium cell at temperatures of (293.15–333.15) K. Solubility of N2O in BAE and the BAE/DMSO binary blends with 22.6, 34.9, and 61.8 mass % BAE was also determined. The effect of the water content on N2O solubility in the water-lean ternary blends with 61.8 mass % BAE was also discussed. The ratios of solubility of CO2 to N2O in polar solvents (i.e., DMSO and water) were found to be very close at temperatures of 323–333 K. Experimental solubility data and the ones calculated from the recommended correlation models match well with each other, with average absolute relative deviations within 0.9%.
研究领域:
化学工程
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环境科学
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DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2019
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IF 5.107
Hao Ling,Sen Liu,Hongxia Gao,Haiyan Zhang,Zhiwu Liang
In order to establish an integrative mass transfer coefficient (K G a V ) model for CO 2 absorption into blended monoethanolamine (MEA)/1-dimethylamino-2-propanol (1DMA2P) solution in packed column, the models of CO 2 Henry’s law constants (He CO₂-MEA/1DMA2P ) and the equilibrium CO 2 solubility (α eq ) were constructed. The experimental produced data can be reasonably analyzed. In this work, the Arrhenius equation was employed to fit the values of He CO₂-MEA/1DMA2P at different temperature with AARD of 4.06%; the Kent-Eisenberg prediction model and empirical polynomial prediction model were used to predict the data of α eq under different CO 2 partial pressures and temperatures with AARDs of 2.64% and 0.83%, respectively; the empirical K G a V model proposed by Li, the empirical K G a V model proposed by Aroonwilas and new K G a V model were used to correlate the average values of K G a V with AARDs of 14.36%, 12.44% and 9.03%, respectively; the model for outlet CO 2 concentration (y CO₂,out ) in packed column was developed with AARD of 15.97%. Moreover, the heat of CO 2 absorption in 6 kmol/m 3 MEA/1DMA2P solution was estimated by Gibbs-Helmholtz equation which gave a value of −39.8 kJ/mol. The results show that the blended MEA/1DMA2P solution has advantages that make it a potential absorbent for CO 2 capture.
研究领域:
化学工程
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环境科学
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DOI
高影响因子
JOURNAL OF CHEMICAL AND ENGINEERING DATA
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2013
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IF 2.004
Zhicheng Xu,Shujuan Wang,Changhe Chen
Densities of and N2O solubilities in aqueous solutions of 1,4-butanediamine (BDA), 2-(diethylamino)-ethanol (DEEA), and their aqueous mixtures were measured at (298.15, 313.15, and 333.15) K, and viscosities were measured at (298.15, 303.15, 313.15, 323.15, and 333.15) K. The experiments cover the mole fraction ranges (1.95–14.3 mol %) BDA, (2.01–19.3 mol %) DEEA, and (3.63–16.7 mol %) BDA + (2.62–22.2 mol %) DEEA in the blended solutions. The results were compared with available data in the literature. The experimental density and viscosity data were correlated using two semi empirical correlations in the literature as functions of temperature and concentration of BDA and DEEA.
研究领域:
化学工程
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物理化学
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DOI
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
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2021
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IF 6.165
Xiaoqin Shi,Shufeng Shen
Nonaqueous secondary alkanolamine-based systems, replacing conventional water with 2-alkoxyethanols as cosolvents, have recently attracted much attention for an energy-efficient CO 2 capture process. In this work, physical solubility of N 2 O and CO 2 in 2-(methylamino)ethanol (MAE), 2-methoxyethanol (2-ME) and their blends was measured and correlated at temperatures ranging from (283.2 to 333.2) K. Vapor-liquid equilibrium (VLE) data for the CO 2 + MAE + 2-ME system at 7.8, 19.4 and 39.1 mass% MAE were also measured in a stirred equilibrium cell at temperatures of (313.2–393.2) K and CO 2 partial pressures up to 270 kPa. VLE data were represented by a modified Kent-Eisenberg model with an AARD of 12.6%. The apparent equilibrium constants considering the liquid nonideality were well correlated as a function of temperature, concentration of carbamate product and CO 2 loading.
研究领域:
化学工程
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环境科学
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DOI
高影响因子
JOURNAL OF CHEMICAL AND ENGINEERING DATA
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2022
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IF 3.119
Tiantian Ping,Qinghai Long,Shufeng Shen
Solubility of N2O and CO2 in pure 2-butoxyethanol (2-BE) was determined in a stirred equilibrium cell at temperatures ranging from 283.2 to 333.2 K and correlated as an exponential function of temperature. Ratios of solubility of CO2 to N2O in several reported solvents were found to be strongly dependent on the order of solvent dielectric constants. Solubility of N2O in 2-(butylamino)ethanol (BAE) and the binary blends of 2-BE and BAE was measured over the temperature range from 283.2 to 333.2 K and with BAE concentration from 6.5 to 65.4 mass%. N2O solubility data were well represented by correlation models with AARDs within 0.8%. Physical solubility of CO2 in a nonaqueous 2-BE/BAE system can be estimated using the N2O analogy method.
研究领域:
化学工程
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环境科学
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产品关联
DOI
高影响因子
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