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Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received March 4, 2011
Accepted May 9, 2011

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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

Seung-Tae Kim^{1 2} Jeong-Won Kang² Jong-seop Lee¹ Byoung-Moo Min^1†

¹Greenhouse Gas Research Center, Korea Institute of Energy Research, 71-2 Jang-dong, Yuseong-gu, Daejeon 305-343, Korea ²Department of Chemical and Biological Engineering, Korea University, 5-1 Anam-dong, Seongbuk-gu, Seoul 136-701, Korea

bmmin@kier.re.kr

Korean Journal of Chemical Engineering, December 2011, 28(12), 2275-2281(7), 10.1007/s11814-011-0126-1

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Abstract

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-pmenthane (KIER-C3) were investigated by using TGA-DSC analysis. The thermal characteristics of the fresh and CO2_x000D_ rich amine solutions were estimated. The CO2 rich amine solutions were obtained by VLE experiments at T=40 ℃. The regeneration heat of aqueous MEA solution was 76.991-66.707 kJ/mol-CO2, which is similar to heat of absorption. The reproducibility of the results was obtained. The regeneration heat of aqueous KIER-C3 20 wt% solution (1.68M) was lower than that of aqueous MEA 30 wt% solution (4.91 M). Therefore, the KIER-C3 can be used as an effective_x000D_ absorbent for acid gas removal.

Keywords

Absorption Carbon Dioxide Heat of Regeneration

References

Chris H, Kluwer Academic Publishers, Netherlands (1994)
Kohl AL, Nielsen RB, Gas Purification, Fifth Ed., Gulf Publishing Company, Houston (1997)
Saha AK, Bandyopadhyay SS, Biswas AK, Chem. Eng. Sci., 50(22), 3587 (1995)
Glasscock DA, Critchfield JE, Rochelle GT, Chem. Eng.Sci., 46, 2829 (1991)
Rangwala HA, Morrell BR, Mather AE, Can. J. Chem., 70, 482 (1992)
Hagewiesche DP, Ashour SS, Alghawas HA, Sandall OC, Chem. Eng. Sci., 50(7), 1071 (1995)
Mandal BP, Guha M, Biswas AK, Bandyopadhyay SS, Chem. Eng. Sci., 56(21-22), 6217 (2001)
Closmann F, Nguyen T, Rochelle GT, Energy Procedia., 1, 1351 (2009)
Caplow M, J. Am. Chem. Soc., 90, 6795 (1968)
Danckwerts PV, Chem. Eng. Sci., 34, 443 (1979)
Donaldson TL, Nguyen YN, Ind. Eng. Chem. Fundam., 19, 260 (1980)
Seo DJ, Hong WH, J. Chem. Eng. Data, 41(2), 258 (1996)
Li MH, Chang BC, J. Chem. Eng. Data, 39(3), 448 (1994)
Kim I, Svendsen HF, Ind. Eng. Chem. Res., 46(17), 5803 (2007)
Mathonat C, Majer V, Mather AE, Grolier JPE, Ind. Eng. Chem. Res., 37(10), 4136 (1998)
Jou FY, Mather AE, Otto FD, Can. J. Chem. Eng., 73(1), 140 (1995)