Learning the properties of a water-lean amine solvent from carbon capture pilot experiments

Kim, Jeong‐Nam; Na, Jonggeol; Kim, Kyeong-Su; Bak, Ji Hyun; Lee, Hyunjoo; Lee, Ung

doi:10.1016/j.apenergy.2020.116213

Cited by 11 publications

(3 citation statements)

References 38 publications

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“…A GSA was also conducted to support decision-making for establishing appropriate CCU strategies and policies and to provide the priority of research targets. Unlike local sensitivity analyses, such as a one-factor-at-a-time method, GSA changes all uncertain input variables simultaneously and monitors the variances of dependent variables 38 . Thus, a GSA generates Sobol indices, which indicate the impacts of uncertain (input) variables on dependent (output) variables.…”

Section: Resultsmentioning

confidence: 99%

Toward economical application of carbon capture and utilization technology with near-zero carbon emission

et al. 2022

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Carbon capture and utilization technology has been studied for its practical ability to reduce CO2 emissions and enable economical chemical production. The main challenge of this technology is that a large amount of thermal energy must be provided to supply high-purity CO2 and purify the product. Herein, we propose a new concept called reaction swing absorption, which produces synthesis gas (syngas) with net-zero CO2 emission through direct electrochemical CO2 reduction in a newly proposed amine solution, triethylamine. Experimental investigations show high CO2 absorption rates (>84%) of triethylamine from low CO2 concentrated flue gas. In addition, the CO Faradaic efficiency in a triethylamine supplied membrane electrode assembly electrolyzer is approximately 30% (@−200 mA cm−2), twice higher than those in conventional alkanolamine solvents. Based on the experimental results and rigorous process modeling, we reveal that reaction swing absorption produces high pressure syngas at a reasonable cost with negligible CO2 emissions. This system provides a fundamental solution for the CO2 crossover and low system stability of electrochemical CO2 reduction.

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Section: Resultsmentioning

confidence: 99%

Toward economical application of carbon capture and utilization technology with near-zero carbon emission

et al. 2022

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“…10 Technologies based on amine scrubbing work effectively for CO 2 chemical capture through the formation of organic compounds, as carbamate and carbonate, 11,12 but they can cause serious solvent losses, corrosion problems, and a regeneration stage with a high energy demand. 13 In this sense, a promising alternative thoroughly investigated is ionic liquids (ILs), using them as potential CO 2 absorbents since they present favorable properties like high uptake capacity, negligible vapor pressure, wide liquid temperature range, and tunable solvent behavior. 14,15 Two alternative types of ILs attending to the CO 2 absorption are being studied.…”

Section: ■ Introductionmentioning

confidence: 99%

“…Carbon dioxide (CO 2 ) capture is a beneficial technology for the worldwide decarbonization due to its effectiveness and relatively low cost. , CO 2 capture technology is broadly used to remove CO 2 compounds from industrial plants. , Nowadays, the CO 2 separation from natural gas and biogas streams to enhance the quality of the methane (CH 4 ) product , is essential to guarantee its safety, transportation, and growing utilization. − In this respect, numerous CO 2 capture approaches have been proposed . Technologies based on amine scrubbing work effectively for CO 2 chemical capture through the formation of organic compounds, as carbamate and carbonate, , but they can cause serious solvent losses, corrosion problems, and a regeneration stage with a high energy demand . In this sense, a promising alternative thoroughly investigated is ionic liquids (ILs), using them as potential CO 2 absorbents since they present favorable properties like high uptake capacity, negligible vapor pressure, wide liquid temperature range, and tunable solvent behavior. , Two alternative types of ILs attending to the CO 2 absorption are being studied .…”

Section: Introductionmentioning

confidence: 99%

Selective CO₂/CH₄ Separation by Fixed-Bed Technology Using Encapsulated Ionic Liquids

Lemus

Paramio

Hospital-Benito

et al. 2022

ACS Sustainable Chem. Eng.

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The performance of encapsulated ionic liquid (ENIL) sorbents has been experimentally evaluated in CO 2 /CH 4 separation by means of gravimetric and fixed-bed measurements. Six ionic liquids (ILs) with CO 2 chemical absorption ([Emim][Acetate], [Bmim][Acetate], [P 66614 ][CNPyr], [Bmim][GLY], [Bmim][MET], and [Bmim]-[PRO]) were selected for the selective separation of CO 2 from CH 4 . ENIL materials were prepared by encapsulation of these ILs in synthesized carbon submicrocapsules, achieving a ∼70% in mass of IL. Fixed-bed experiments of CO 2 capture were carried out to evaluate the CO 2 /CH 4 separation performance of prepared ENIL materials at different CO 2 partial pressures and 303 K. Both thermodynamics and kinetics of CO 2 sorption were analyzed. The experimental CO 2 and CH 4 isotherms in ENIL materials obtained from fixed-bed experiments were successfully compared to those obtained by reliable gravimetric tests and fitted to the Langmuir− Freundlich equilibrium model. In addition, experimental CO 2 breakthrough curves were well-described by the linear driving force and Yoon and Nelson kinetic models, providing sorption rate constants. ENIL sorbents show high CO 2 uptake capacity, comparable to conventional adsorbents, but with drastically higher selectivity, in concordance with the negligible CH 4 solubility in ILs at the used operating conditions, with acetate-based ENIL materials being the best sorbents in thermodynamic terms. The obtained kinetic parameters revealed that the CO 2 chemical sorption with ENIL materials overcomes the IL mass transfer limitations. The sorption rates are faster than those obtained with ENIL using IL physical absorbents and seem to be controlled by the reaction kinetics. The [P 66614 ][CNPyrr]-based ENIL is found to be the most promising material, combining favorable kinetic and thermodynamic considerations for future development of CO 2 /CH 4 separation using fixed-bed technology.

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Machine Learning Models for Absorption-Based Post-combustion Carbon Capture

Ghiasi,

Ahmadian,

Zanganeh

et al. 2024

Green Energy and Technology

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Learning the properties of a water-lean amine solvent from carbon capture pilot experiments

Cited by 11 publications

References 38 publications

Toward economical application of carbon capture and utilization technology with near-zero carbon emission

Toward economical application of carbon capture and utilization technology with near-zero carbon emission

Selective CO₂/CH₄ Separation by Fixed-Bed Technology Using Encapsulated Ionic Liquids

Machine Learning Models for Absorption-Based Post-combustion Carbon Capture

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Learning the properties of a water-lean amine solvent from carbon capture pilot experiments

Cited by 11 publications

References 38 publications

Toward economical application of carbon capture and utilization technology with near-zero carbon emission

Toward economical application of carbon capture and utilization technology with near-zero carbon emission

Selective CO2/CH4 Separation by Fixed-Bed Technology Using Encapsulated Ionic Liquids

Machine Learning Models for Absorption-Based Post-combustion Carbon Capture

Contact Info

Product

Resources

About

Selective CO₂/CH₄ Separation by Fixed-Bed Technology Using Encapsulated Ionic Liquids