Solubility of CO2 in the Mixed Solvent System of Alkanolamines and Poly(ethylene glycol) 200

被引：37

作者：

Li, Jun ^{[1
]}

Chen, Lifang ^{[1
]}

Ye, Yinmei ^{[2
]}

Qi, Zhiwen ^{[1
]}

机构：

[1] E China Univ Sci & Technol, State Key Lab Chem Engn, Sch Chem Engn, Shanghai 200237, Peoples R China

[2] E China Univ Sci & Technol, Natl Engn Res Ctr Integrated Utilizat Salt Lake R, Sch Resources & Environm Engn, Shanghai 200237, Peoples R China

来源：

JOURNAL OF CHEMICAL AND ENGINEERING DATA | 2014年 / 59卷 / 06期

关键词：

CARBON-DIOXIDE; IONIC LIQUID; N-METHYLDIETHANOLAMINE; CORROSION BEHAVIOR; CAPTURE; ABSORPTION; MONOETHANOLAMINE; DEGRADATION; MIXTURES; AMINES;

D O I：

10.1021/je400947t

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Mixed solvents of monoethanolamine (MEA), diglycolamine (DGA), diethanolamine (DEA), and N-methyldiethanolamine (MDEA) with poly(ethylene glycol) 200 (PEG200) as cosolvent were analyzed by thermal gravimetric analysis to select an available CO2 absorber. MEA-PEG200 has the lowest onset temperature (the temperature at which the weight loss begins) of 363 K and thus is not appropriate for CO2 capture at high temperature. The viscosities of the mixtures decrease as temperature increases, and are mainly decided by the viscosity of PEG200 at a high temperature. The solubility of CO2 in mixed solvents of alkanolamine (DGA, DEA, and MDEA) and PEG200 was measured over the range of pressure from (10 to 1600) kPa and temperature from (313.15 to 393.15) K in intervals of 40 K DEA and DGA solutions show relatively high CO2 capacity at 313.15 K owing to a chemical reaction with CO2, while MDEA solution presents the property of physical absorber. When temperature further increases to 393 K, the capacity decreases significantly. The solubility was correlated by Jou and Mather's model.

引用

页码：1781 / 1787

页数：7

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