Catalytic and non catalytic solvent regeneration during absorption-based CO2 capture with single and blended reactive amine solvents

Shi, Huancong; Naami, Abdulaziz; Idem, Raphael; Tontiwachwuthikul, Paitoon

doi:10.1016/j.ijggc.2014.04.007

Cited by 178 publications

(208 citation statements)

References 13 publications

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“…From these series of regeneration curves, the regeneration curves can be split into two stages, the slow stage after the fast stage, with respect to different slopes of the curves [15,16,17]. The CO 2 desorption rate is relatively high at fast stage.…”

Section: Resultsmentioning

confidence: 99%

“…The other side neck was sealed with a glass cock, ready for the sampling at the appropriate time. The CO 2 loading tests of the samples were performed separately with a Chittick apparatus (AOAC), with an AAD of 2.5% [15]. A condenser was placed on the center neck of the bottle to condense the vapor with recycling water.…”

Section: Co 2 Desorption / Amine Regeneration Apparatusmentioning

confidence: 99%

“…The last part is very important as the research focus for years. Peer researchers have developed several methods to reduce the part or overall of heat duty [3,4,[6][7][8][9][10][11][12][13][14][15]. Two conventional methods are recommended: solvent improvement and process intensification [2].…”

Section: Introductionmentioning

confidence: 99%

“…This research focused on another direction: solvent improvement [3], which has been investigated repeatedly with heat duty analyses since 2005 [4,5,[10][11][12][13][14][15]. The heat duty calculation was conducted [5] based on the CO 2 desorbed out of the regeneration column and the amount of lean amine solutions returned to the absorption column.…”

Section: Introductionmentioning

confidence: 99%

“…The fast / slow stages were proposed for amine regeneration with MEA and MEA-MDEA solutions before [11], the details of turning points (specific CO 2 loadings) that distinguish the fast and slow amine regenerations regions were limited due to inadequate experimental data. These regeneration curves contained 4 dots per curve only [15].…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Amine Regeneration Tests on MEA, DEA and MMEA with Respect to Energy Efficiency Study

Zhou¹,

Zheng²,

Cao³

et al. 2017

Proceedings of the 3rd 2017 International Conference on Sustainable Development (ICSD 2017)

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Abstract. The CO 2 desorption analyses of amines were performed to reveal the behaviour of amine regeneration process. A typical primary amine (MEA) and two other secondary amines (MMEA and DEA) were selected in preparation for amine solutions under different concentrations, from 1-7 mol/L. The regeneration curves were plotted to describe the process. It was discovered that the specific CO 2 loading (mol/mol) that distinguish the amine regeneration curves into different regions were the same for the specific amine, despite different concentrations. These points were defined as "turning points" on regeneration curves. The turning points of MEA, MMEA and DEA are located at CO 2 loading of 0.40 mol/mol, 0.38 mol/mol and 0.28 mol/mol, respectively. The regeneration tests compared the relative heat duty at the first 2 hours: MMEA > MEA > > DEA.

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Section: Resultsmentioning

confidence: 99%

Section: Co 2 Desorption / Amine Regeneration Apparatusmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Amine Regeneration Tests on MEA, DEA and MMEA with Respect to Energy Efficiency Study

Zhou¹,

Zheng²,

Cao³

et al. 2017

Proceedings of the 3rd 2017 International Conference on Sustainable Development (ICSD 2017)

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Experimental study on the solvent regeneration of a CO₂‐loaded MEA solution using single and hybrid solid acid catalysts

et al. 2015

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The performance of a hybrid solid acid catalyst consisting of a physical mixture of γ‐Al2O3 and H‐ZSM‐5 in terms of the rate and heat duty for solvent regeneration (i.e., CO2 stripping) of a CO2‐rich MEA solution was compared with the individual performance of γ‐Al2O3, H‐ZSM‐5, and H‐Y solid acid catalysts using MEA (2–7 mol/L), with initial CO2 loading of 0.5 mol CO2/mol MEA at 378 K. It was observed that any catalyst significantly decreased the energy required for CO2 regeneration. The performance of the catalysts investigated ranked as follows: γ‐Al2O3/H‐ZSM‐5 = 2/1 > γ‐Al2O3 > H‐ZSM‐5 > H‐Y if the process is in the lean CO2 loading region whereas it was H‐ZSM‐5 > γ‐Al2O3/H‐ZSM‐5 = 2/1 > γ‐Al2O3 > H‐Y if the process is in the rich CO2 loading region. These results highlight the joint dependence on Brønsted/Lewis acidity and mesopore surface area of heat duty for solvent regeneration. © 2015 American Institute of Chemical Engineers AIChE J, 62: 753–765, 2016

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SO₄²⁻/ZrO₂ supported on γ‐Al₂O₃ as a catalyst for CO₂ desorption from CO₂‐loaded monoethanolamine solutions

et al. 2018

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In this work, the composite catalysts, SO42/ZrO2/γ‐Al2O3 (SZA), with different ZrO2 and γ‐Al2O3 mass ratios were prepared and used for the first time for the carbon dioxide (CO2)‐loaded monoethanolamine (MEA) solvent regeneration process to reduce the heat duty. The regeneration characteristics with five catalysts (three SZA catalysts and two parent catalysts) of a 5 M MEA solution with an initial CO2 loading of 0.5 mol CO2/mol amine at 98°C were investigated in terms of CO2 desorption performance and compared with those of a blank test. All the catalysts were characterized using X‐ray diffraction, Fourier transform infrared spectroscopy, N2 adsorption–desorption experiment, ammonia temperature programmed desorption, and pyridine‐adsorption infrared spectroscopy. The results indicate that the SZA catalysts exhibited superior catalytic activity to the parent catalysts. A possible catalytic mechanism for the CO2 desorption process over SZA catalyst was proposed. The results reveal that SZA1/1, which possesses the highest joint value of Brφnsted acid sites (BASs) and mesopore surface area (MSA), presented the highest catalytic performance, decreasing the heat duty by 36.9% as compared to the catalyst‐free run. The SZA1/1 catalyst shows the best catalytic performance as compared with the reported catalyst for this purpose. Moreover, the SZA catalyst has advantages of low cost, good cyclic stability, easy regeneration and has no effect on the CO2 absorption performance of MEA. © 2018 American Institute of Chemical Engineers AIChE J, 64: 3988–4001, 2018

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Catalytic and non catalytic solvent regeneration during absorption-based CO2 capture with single and blended reactive amine solvents

Cited by 178 publications

References 13 publications

Amine Regeneration Tests on MEA, DEA and MMEA with Respect to Energy Efficiency Study

Amine Regeneration Tests on MEA, DEA and MMEA with Respect to Energy Efficiency Study

Experimental study on the solvent regeneration of a CO₂‐loaded MEA solution using single and hybrid solid acid catalysts

SO₄²⁻/ZrO₂ supported on γ‐Al₂O₃ as a catalyst for CO₂ desorption from CO₂‐loaded monoethanolamine solutions

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Catalytic and non catalytic solvent regeneration during absorption-based CO2 capture with single and blended reactive amine solvents

Cited by 178 publications

References 13 publications

Amine Regeneration Tests on MEA, DEA and MMEA with Respect to Energy Efficiency Study

Amine Regeneration Tests on MEA, DEA and MMEA with Respect to Energy Efficiency Study

Experimental study on the solvent regeneration of a CO2‐loaded MEA solution using single and hybrid solid acid catalysts

SO42−/ZrO2 supported on γ‐Al2O3 as a catalyst for CO2 desorption from CO2‐loaded monoethanolamine solutions

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Experimental study on the solvent regeneration of a CO₂‐loaded MEA solution using single and hybrid solid acid catalysts

SO₄²⁻/ZrO₂ supported on γ‐Al₂O₃ as a catalyst for CO₂ desorption from CO₂‐loaded monoethanolamine solutions