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Intensification of the Mass Transfer of the Green CO2 Capture Employing the Ternary Solution of Alkanolamine-Amino Acid

Document Type : Special issue

Authors

1 Department of Chemical Engineering, Faculty of Energy, Kermanshah University of Technology, Kermanshah, Iran

2 Chemical Engineering Department, Kermanshah University of Technology, Kermanshah, Iran.

Abstract

The increased demand of the world for energy and its reliance on fossil fuels ultimately contribute to the surge in the levels of carbon dioxide in the atmosphere. To achieve a green, efficient carbon capture, a novel multi-component amine-amino acid solvent including methyldiethanolamine (MDEA), diisopropanolamine (DIPA), and Arginine (ARG) was designated for the CO2 absorption in a T-microreactor. The potential absorption of the aqueous solutions of the desired mixed amines has been assessed through the CO2 absorption percentage (AP) and the total volumetric gas-phase mass transfer coefficient (TGMTC) over a wide range of the gas flow rates (60-240 mL/min), solvent flow rates (2-6 mL/min), under the three mixing concentrations of MDEA: DIPA: ARG (28:8:4), (28:6:6), and (28:4:8)) wt%. The research findings demonstrate an increment of 31% in the absorption percentage of CO2 by reducing DIPA to 4 wt% and raising the concentration of arginine to 8 wt% in the ternary amine solutions. Additionally, the highest mass transfer coefficient of 38.06 (kmol/m3.h.kPa) was achieved utilizing the aqueous solution of MDEA+DIPA+ARG (28+4+8) wt%.
 

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References
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Iranian Journal of Chemical Engineering(IJChE)
Volume 20, Issue 4
Special Issue(IChEC 2023)
January 2024
Pages 27-39
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