Absorption Characteristics of Carbon Dioxide by Water-lean Diethylenetriamine Absorbents Mixed with Physical Solvents 


Vol. 24,  No. 1, pp. 50-54, Mar.  2018
10.7464/ksct.2018.24.1.050


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  Abstract

Abstract : In this work, N-methyl-2-pyrrolidone (NMP) was added into diethylenetriamine (DETA) aqueous solution for high CO2 loading via phase splitting of absorbents during CO2 absorption. Immiscible two phases were formed in the range of more than 30 wt% of NMP in 2 M DETA + NMP + water absorbents because of low solubility of DETA-carbamate in NMP solution. As the composition of NMP in the absorbents increased, the difference of CO2 loading between each phase increased and the volume of bottom phase decreased. In CO2 absorption in packed column by 2 M DETA + NMP + water absorbents, the absorption rate decreased in the range of more than 40 wt% of NMP. It is due to the increasing of mass transfer resistance in liquid film of absorbents at the high concentration of NMP. DETA + NMP + water absorbent is expected as the promising one for reducing the regeneration energy of absorbents according to volume reduction of CO2-rich phase.

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  Cite this article

[IEEE Style]

L. HY, S. CH, Y. JK, H. YK, "Absorption Characteristics of Carbon Dioxide by Water-lean Diethylenetriamine Absorbents Mixed with Physical Solvents," Clean Technology, vol. 24, no. 1, pp. 50-54, 2018. DOI: 10.7464/ksct.2018.24.1.050.

[ACM Style]

Lee HY, Seok CH, You JK, and Hong YK. 2018. Absorption Characteristics of Carbon Dioxide by Water-lean Diethylenetriamine Absorbents Mixed with Physical Solvents. Clean Technology, 24, 1, (2018), 50-54. DOI: 10.7464/ksct.2018.24.1.050.

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pISSN : 1598 - 9712
eISSN : 2288 - 0690

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