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http://dx.doi.org/10.7464/ksct.2018.24.1.050

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

Lee, Hwa Young (School of Chemical and Material Engineering, Korea National University of Transportation)
Seok, Chang Hwan (School of Chemical and Material Engineering, Korea National University of Transportation)
You, Jong-Kyun (Greenhouse Gas Laboratory, Korea Institute of Energy Research)
Hong, Yeon Ki (School of Chemical and Material Engineering, Korea National University of Transportation)
Publication Information
Clean Technology / v.24, no.1, 2018 , pp. 50-54 More about this Journal
Abstract
In this work, N-methyl-2-pyrrolidone (NMP) was added into diethylenetriamine (DETA) aqueous solution for high $CO_2$ loading via phase splitting of absorbents during $CO_2$ 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 $CO_2$ loading between each phase increased and the volume of bottom phase decreased. In $CO_2$ 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 $CO_2-rich$ phase.
Keywords
Carbon dioxide; Absorption; Phase splitting; DETA; NMP;
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Times Cited By KSCI : 2  (Citation Analysis)
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1 National Energy Technology Laboratory, "Cost and Performance Baseline for Fossil Energy Plants," Final Report (2010).
2 Lee, J., Hong, Y. K., and You, J. K., "Phase Separation Characteristics in Biphasic Solvents Based on Mutually Miscible Amines for Energy Efficient $CO_2$ Capture," Korean J. Chem. Eng., 34(6), 1840-1845 (2017).   DOI
3 Kim, Y. M., Kim, D. S., and Cho, J., "A Study on the Regeneration Energy Reduction through the Process Improvement of the Carbon Dioxide Capture Process," Clean Technol, 18 (2), 221-225 (2012).   DOI
4 Aleixo, M., Prigent, M., Gibert, A., Porcheron, F., Mokbel, I., Jose, J., and Jacquin, M., "Physical and Chemical Properties of $DMX^{TM}$ Solvents," Energy Procedia, 4, 148-155 (2011).   DOI
5 Bruder, P., and Svendsen, H. F., "Capacity and Kinetics of Solvents for Post-Combustion $CO_2$ Capture," Energy Procedia, 23, 45-54 (2012).   DOI
6 Ye, Q., Wang, X., and Lu, Y., "Screening and Evaluation of Novel Biphasic Solvents for Energy-Efficient Post-Combustion $CO_2$ Capture," Int. J. Greenh. Gas Control, 39, 205-214 (2015).   DOI
7 Fu, K., Chen, G., Sema, T., Zhang, X., Liang, Z., Idem, R., and Tontiwachwuthikul, P., "Experimental Study on Mass Transfer and Prediction Using Artificial Neural Network for $CO_2$ Absorption into Aqueous DETA," Chem. Eng. Sci., 100, 195-202 (2013).   DOI
8 Aronu, U. E., Gondal, S., Hessen, E. T., Haug-Warberg, T., Hartono, A., Hoff, K. A., and Svendsen, H. F., "Solubility of $CO_2$ in 15, 30, 45, 60 mass% MEA from 40 to $120^{\circ}C$ and Model Representation Using the Extended UNIQUAC Framework," Chem. Eng. Sci., 66(24), 6393-6406 (2011).   DOI
9 International Energy Agency, "International Network for $CO_2$ Capture: Report on 12th Meeting," Regina, Canada (Sep. 2009).