Correlation of CO2 solubility in N-methyldiethanolamine plus piperazine aqueous solutions using extended Debye-Huckel model

被引：27

作者：

Vahidi, Mehdi ^{[1
]}

Matin, Naser Seyed ^{[1
]}

Goharrokhi, Mahdi ^{[2
]}

Jenab, Masih Hosseini ^{[1
]}

Abdi, Majid Abedinzadegan ^{[1
]}

Najibi, Seyed Hesam ^{[3
,4
]}

机构：

[1] NIOC, RIPI, Tehran, Iran

[2] Islamic Azad Univ, Dept Chem Engn, Tehran, Iran

[3] Petr Univ Technol, Dept Petr Engn, Ahvaz, Iran

[4] NIGC, R&D Dept, Tehran, Iran

来源：

JOURNAL OF CHEMICAL THERMODYNAMICS | 2009年 / 41卷 / 11期

关键词：

Solubility; MDEA; Piperazine; Carbon dioxide; Extended Debye-Huckel; VAPOR-LIQUID-EQUILIBRIA; GASES CARBON-DIOXIDE; HYDROGEN-SULFIDE; TEMPERATURE-RANGE; H2S; PREDICTION; PRESSURES; MIXTURES; 2-AMINO-2-METHYL-1-PROPANOL; ABSORPTION;

D O I：

10.1016/j.jct.2009.05.017

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Solubility data of CO2 in aqueous N-methyldiethanolamine (MDEA) solutions of concentration (2.52, 3.36, and 4.28) kmol/m(3) Were obtained at temperatures (313, 323, and 343) K and partial pressures ranging from about (30 to 5000) kPa. A thermodynamic model based on extended Debye-Huckel theory was applied to predict and correlate of CO2 solubility in various aqueous amine solutions. The effect of piperazine (PZ) concentration on CO2 loading in MDEA solutions was determined at PZ concentration (0.36, 0.86, and 1.36) kmol/m(3). Using experimental data in various temperatures the interaction parameters of activity coefficient model for these systems were determined. The results show the model consistency with experimental and literature data and PZ is beneficial to the CO2 loading. The comparison of results of this study with previous data work shows the wide range of CO2 loading considered in this work and the better agreement of model with experimental data. The average absolute relative deviation percent (delta(AAD)) for all data points were 8.11%. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：1272 / 1278

页数：7

共 29 条

[11] Solubility of single gases carbon dioxide and hydrogen sulfide in aqueous solutions of N-methyldiethanolamine at temperatures from 313 to 393 K and pressures up to 7.6 MPa:: New experimental data and model extension [J].