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Effect of Various Parameters on the Thermal Stability and Corrosion of CO 2 -Loaded Tertiary Amine Blends

Author

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  • Usman Shoukat

    (Department of Chemical Engineering, Norwegian University of Science and Technology (NTNU), 7491 Trondheim, Norway)

  • Hanna Katariina Knuutila

    (Department of Chemical Engineering, Norwegian University of Science and Technology (NTNU), 7491 Trondheim, Norway)

Abstract

In this study, the thermal stability and corrosivity of various CO 2 -loaded tertiary amine blends in both aqueous and non-aqueous form in stainless steel cylinders were studied for combined acid gas and water removal. The thermal stability was measured from the remaining amine concentration and the corrosivity was measured from the amount of various metals in blends using titration and inductively coupled plasma mass spectrometry (ICP-MS), respectively. The experimental data were used to calculate the rate constants of amine group loss. The developed model represented the experimental data very well. Solvent change from H 2 O to triethylene glycol (TEG) in blends decreased the thermal stability and vice versa for corrosivity. The amine stability was increased when contact with stainless steel was reduced. An increase in the amine concentration or CO 2 loading at constant temperature decreased the thermal stability and vice versa for corrosivity.

Suggested Citation

  • Usman Shoukat & Hanna Katariina Knuutila, 2020. "Effect of Various Parameters on the Thermal Stability and Corrosion of CO 2 -Loaded Tertiary Amine Blends," Energies, MDPI, vol. 13(10), pages 1-17, May.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:10:p:2626-:d:361260
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    References listed on IDEAS

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    1. Usman Shoukat & Eva Baumeister & Hanna K. Knuutila, 2019. "ATR-FTIR Model Development and Verification for Qualitative and Quantitative Analysis in MDEA–H 2 O–MEG/TEG–CO 2 Blends," Energies, MDPI, vol. 12(17), pages 1-15, August.
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    Cited by:

    1. Eileen Li Shien Ng & Kok Keong Lau & Sim Yee Chin & Soh Fong Lim, 2023. "Foam and Antifoam Behavior of PDMS in MDEA-PZ Solution in the Presence of Different Degradation Products for CO 2 Absorption Process," Sustainability, MDPI, vol. 15(2), pages 1-20, January.

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