Experimental and an electrolyte non-random two-liquid model to predict the vapor-liquid equilibrium of CO2 in aqueous solutions of diethylenetriamine

被引：0

作者：

Zhang, Ruilei ^{[1
]}

Tang, Yandong ^{[1
]}

Shan, Weifeng ^{[1
]}

Liu, Haijun ^{[1
]}

Li, Haijun ^{[1
]}

Chen, Jian ^{[2
]}

机构：

[1] Inst Disaster Prevent, Sanhe 101601, Peoples R China

[2] Tsinghua Univ, State Key Lab Chem Engn, Beijing, Peoples R China

来源：

JOURNAL OF CHEMICAL RESEARCH | 2021年 / 45卷 / 3-4期

关键词：

Aspen Plus; CO2; capture; diethylenetriamine; non-random-two-liquid-electrolyte thermodynamic model; polyamine; CARBON-DIOXIDE; 30-MASS-PERCENT MONOETHANOLAMINE; HYDROGEN-SULFIDE; SOLUBILITY; ENTHALPIES; ADSORPTION; MIXTURES; SORBENTS; KINETICS; DETA;

D O I：

10.1177/1747519820964179

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The absorption and desorption data of CO2 in aqueous solutions with a mass fraction of 10% and 20% of diethylenetriamine are measured at 313.15, 343.15, 373.15, and 393.15 K. The electrolyte non-random two-liquid theory is developed using Aspen V9.0 to correlate and predict the vapor-liquid equilibrium of CO2 in aqueous diethylenetriamine solutions. The model predicted the heat capacity and saturated vapor pressure data of diethylenetriamine, the mixed heat of a diethylenetriamine-H2O binary system, and the vapor-liquid equilibrium data of a diethylenetriamine-H2O-CO2 ternary system. The physical parameters and the interaction parameters of the model system are calculated. The model predicted CO2 solubility showing a 10% average absolute deviation from experimental data. The calculated values of the model are basically consistent with the experimental values.

引用

页码：275 / 281

页数：7

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