Analysis of the heat of reaction and regeneration in alkanolamine-CO2 system

被引：15

作者：

Kim, Seung-Tae ^{[1
,2
]}

Kang, Jeong-Won ^{[2
]}

Lee, Jong-seop ^{[1
]}

Min, Byoung-Moo ^{[1
]}

机构：

[1] Korea Inst Energy Res, Greenhouse Gas Res Ctr, Taejon 305343, South Korea

[2] Korea Univ, Dept Chem & Biol Engn, Seoul 136701, South Korea

来源：

KOREAN JOURNAL OF CHEMICAL ENGINEERING | 2011年 / 28卷 / 12期

关键词：

Absorption; Carbon Dioxide; Heat of Regeneration; CARBON-DIOXIDE; CO2; MONOETHANOLAMINE; ABSORPTION; 2-AMINO-2-METHYL-1-PROPANOL; METHYLDIETHANOLAMINE; DIETHANOLAMINE; SOLUBILITIES; MIXTURES; KINETICS;

D O I：

10.1007/s11814-011-0126-1

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The estimation of regeneration heat of absorbent is important because it is a key factor that has an effect on the process efficiency. In this study, thermal stability and regeneration heat of aqueous amine solutions such as monoethanolamine (MEA), 2-amino-2-methyl-1-propanol (AMP), N-methyldiethanolamine (MDEA), and 1,8-diamino-p-menthane (KIER-C3) were investigated by using TGA-DSC analysis. The thermal characteristics of the fresh and CO(2) rich amine solutions were estimated. The CO(2) rich amine solutions were obtained by VLE experiments at T=40 degrees C. The regeneration heat of aqueous MEA solution was 76.991-66.707 k/mol-CO(2), which is similar to heat of absorption. The reproducibility of the results was obtained. The regeneration heat of aqueous KIER-C3 20 wt% solution (1.68 M) was lower than that of aqueous MEA 30 wt% solution (4.91 M). Therefore, the KIER-C3 can be used as an effective absorbent for acid gas removal.

引用

页码：2275 / 2281

页数：7

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