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

Seung Tae Kim; Jeong Won Kang; Jong seop Lee; Byoung Moo Min

doi:10.1007/s11814-011-0126-1

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

Seung Tae Kim, Jeong Won Kang, Jong seop Lee, Byoung Moo Min

Department of Chemical and Biological Engineering

Research output: Contribution to journal › Article › peer-review

18 Citations (Scopus)

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 rich amine solutions were estimated. The CO₂ rich amine solutions were obtained by VLE experiments at T=40 °C. 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 (1.68 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.

Original language	English
Pages (from-to)	2275-2281
Number of pages	7
Journal	Korean Journal of Chemical Engineering
Volume	28
Issue number	12
DOIs	https://doi.org/10.1007/s11814-011-0126-1
Publication status	Published - 2011 Dec

Keywords

Absorption
Carbon Dioxide
Heat of Regeneration

ASJC Scopus subject areas

Chemistry(all)
Chemical Engineering(all)

Access to Document

10.1007/s11814-011-0126-1

Cite this

@article{2d6b03fa840e4b4ca13434dcd1ad019a,

title = "Analysis of the heat of reaction and regeneration in alkanolamine-CO2 system",

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 rich amine solutions were estimated. The CO2 rich amine solutions were obtained by VLE experiments at T=40 °C. 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 (1.68 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.",

keywords = "Absorption, Carbon Dioxide, Heat of Regeneration",

author = "Kim, {Seung Tae} and Kang, {Jeong Won} and Lee, {Jong seop} and Min, {Byoung Moo}",

note = "Funding Information: This research was supported by a grant (2006CCD11P01000) from Korea Institute of Energy Technology Evaluation and Planning (KETEP).",

year = "2011",

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doi = "10.1007/s11814-011-0126-1",

language = "English",

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AU - Kim, Seung Tae

AU - Kang, Jeong Won

AU - Lee, Jong seop

AU - Min, Byoung Moo

N1 - Funding Information: This research was supported by a grant (2006CCD11P01000) from Korea Institute of Energy Technology Evaluation and Planning (KETEP).

PY - 2011/12

Y1 - 2011/12

N2 - 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 rich amine solutions were estimated. The CO2 rich amine solutions were obtained by VLE experiments at T=40 °C. 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 (1.68 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.

AB - 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 rich amine solutions were estimated. The CO2 rich amine solutions were obtained by VLE experiments at T=40 °C. 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 (1.68 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.

KW - Absorption

KW - Carbon Dioxide

KW - Heat of Regeneration

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