Degradation of solutions of monoethanolamine, diglycolamine and potassium glycinate in view of tail-end CO2 absorption

Epp, Bernhard; Fahlenkamp, H.; Vogt, Monika

doi:10.1016/j.egypro.2011.01.025

Cited by 25 publications

(17 citation statements)

References 2 publications

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“…Other amines were studied (Davis, 2009;Eide-Haugmo et al, 2011;Epp et al, 2011;Freeman, 2011;Lepaumier, 2008;Lepaumier et al, 2009aLepaumier et al, ,b, 2010Lepaumier et al, , 2011b. They are reported in Table 13.…”

Section: Other Aminesmentioning

confidence: 98%

Amine degradation in CO2 capture. I. A review

Gouedard

Picq

Launay

et al. 2012

International Journal of Greenhouse Gas Control

442

321

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Section: Other Aminesmentioning

confidence: 98%

Amine degradation in CO2 capture. I. A review

Gouedard

Picq

Launay

et al. 2012

International Journal of Greenhouse Gas Control

442

321

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“…Some amino acid salts have been reported to be more oxidatively stable than MEA [5]. However, the thermal degradation of amino acid salts was only recently studied and was found to have enhanced thermal degradation rates compared to the reference MEA solvent [6].…”

Section: Introductionmentioning

confidence: 98%

Thermal Degradation Comparison of Amino Acid Salts, Alkanolamines and Diamines in CO2 Capture

et al. 2014

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In the selection of candidates for post-combustion CO 2 absorption, solvent degradation has become a general concern due to the significant impact on operational cost and the intention to use thermal compression from high temperature stripping to minimize the overall process energy. In this research, structural analogs of amino acid salts, alkanolamines and diamines were thermally degraded in order to explore their thermal stability from a structural standpoint. Functional groups, amine orders and steric effect were investigated for their impact on amine thermal degradation. Primary amines with chain structures showed a thermal stability trend as diamine > alkanolamine > amino acid salt. For alknolamine and diamine structural isomers, the primary amines are more stable than the secondary amines. Steric hindrance around the amine group was shown to play a positive role in protecting amines against thermal degradation.

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“…Contrary to general expectations of enhanced chemical stability, amino acid sorbents have been found to have similar or even higher oxidative or thermal degradation rates compared to amine sorbents such as MEA. 3,4 Furthermore, the regeneration energy for aqueous amino acid salts, such as sodium glycinate, was found to be significantly higher (5743 kJ/kg CO2) than the regeneration energy of MEA (4503 kJ/kg CO2). 5 This is in spite of the reaction enthalpy for CO2 release being slightly lower for sodium glycinate compared to MEA (69 vs 79 kJ/mol), as sodium glycinate has considerably higher sensible heat and latent heat of vaporization than MEA.…”

Section: Introductionmentioning

confidence: 97%

Energy-Efficient CO₂ Capture from Flue Gas by Absorption with Amino Acids and Crystallization with a Bis-Iminoguanidine

Garrabrant

Williams

Holguin

et al. 2019

Ind. Eng. Chem. Res.

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A hybrid solvent/solid-state approach to CO2 separation from flue gas is demonstrated based on absorption with aqueous amino acids (i.e., glycine, sarcosine), followed by crystallization of the bicarbonate salt of glyoxal-bis(iminoguanidine) (GBIG), and subsequent solid-state CO2 release from the bicarbonate crystals. In this process, the GBIG bicarbonate crystallization regenerates the amino acid sorbent, and the CO2 is subsequently released by mild heating of the GBIG bicarbonate crystals, which results in quantitative, energy-efficient regeneration of GBIG. The cyclic capacities measured from multiple absorption-regeneration cycles are in the range of 0.2-0.3 mol CO2/mol amino acid. This hybrid CO2-separation approach reduces the sorbent regeneration energy by 24% and 40% compared to the regeneration energy needed for benchmark industrial sorbents monoethanolamine and sodium glycinate, respectively, while minimizing the amount of the amino acid sorbent loss through evaporation or degradation.

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Degradation of solutions of monoethanolamine, diglycolamine and potassium glycinate in view of tail-end CO2 absorption

Cited by 25 publications

References 2 publications

Amine degradation in CO2 capture. I. A review

Amine degradation in CO2 capture. I. A review

Thermal Degradation Comparison of Amino Acid Salts, Alkanolamines and Diamines in CO2 Capture

Energy-Efficient CO₂ Capture from Flue Gas by Absorption with Amino Acids and Crystallization with a Bis-Iminoguanidine

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Degradation of solutions of monoethanolamine, diglycolamine and potassium glycinate in view of tail-end CO2 absorption

Cited by 25 publications

References 2 publications

Amine degradation in CO2 capture. I. A review

Amine degradation in CO2 capture. I. A review

Thermal Degradation Comparison of Amino Acid Salts, Alkanolamines and Diamines in CO2 Capture

Energy-Efficient CO2 Capture from Flue Gas by Absorption with Amino Acids and Crystallization with a Bis-Iminoguanidine

Contact Info

Product

Resources

About

Energy-Efficient CO₂ Capture from Flue Gas by Absorption with Amino Acids and Crystallization with a Bis-Iminoguanidine