Modeling of carbon dioxide absorption by solution of piperazine and methyldiethanolamine in a rotating packed bed

Esmaeili, Arash; Tamuzi, Amin; Borhani, Tohid N.; Xiang, Yang; Shao, Lei

doi:10.1016/j.ces.2021.117118

Cited by 20 publications

(7 citation statements)

References 48 publications

(84 reference statements)

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“…59 Although a higher Q L leads to an increase of η and K G a, with the continuous increase of Q L , it may lead to flooding. 59 which is clearly shown in Figure 13. Increasing the MEA concentration from 30 to 90 wt %, K G a increases from 1.87 to 2.45 s −1 .…”

Section: Influence Of the Rotational Speedmentioning

confidence: 99%

“…(ii) A higher Q L means that more MEA solutions are allowed to absorb CO 2 , resulting in a higher mass transfer and reaction rate between MEA solution and CO 2 . 59 Although a higher Q L leads to an increase of η and K G a, with the continuous increase of Q L , it may lead to flooding. 59 which is clearly shown in Figure 13.…”

Section: Influence Of the Rotational Speedmentioning

confidence: 99%

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CFD Modeling of Reactive Absorption of CO₂ by Aqueous MEA Solution in a Rotating Packed Bed

Zhang,

et al. 2024

Energy Fuels

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In this paper, carbon dioxide (CO 2 ) absorption by monoethanolamine (MEA) solutions in a rotating packed bed (RPB) is simulated using the computational fluid dynamics (CFD) approach. First, a new gas−liquid−solid three-phase interaction force model is developed based on the modified Kołodziej model. Then, the new interaction force model is combined with the interfacial area model, mass transfer model, chemical reaction model, and heat transfer model. Finally, a new simulation framework for RPBs based on the Eulerian multifluid approach is developed for modeling CO 2 absorption in an RPB. The simulated CO 2 absorption efficiency (η) and overall gas-phase volumetric mass transfer coefficient (K G a) by using the Eulerian multifluid CFD model are verified by experimental data, and the pressure drop is compared with a general pressure drop model. In addition, the pressure drop, η, and K G a are investigated considering the influences of the rotational speed, gas and liquid flow rates, and MEA concentration.

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Section: Influence Of the Rotational Speedmentioning

confidence: 99%

Section: Influence Of the Rotational Speedmentioning

confidence: 99%

CFD Modeling of Reactive Absorption of CO₂ by Aqueous MEA Solution in a Rotating Packed Bed

Zhang,

et al. 2024

Energy Fuels

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“…Esmaeili studied the removal of CO 2 by the blended amine solution of MDEA/PZ with the various molar concentration ratios in a rotating packed bed. The process analysis discovered that rotational speed and PZ concentration have the most important effects on CO 2 absorption efficiency . In general, the combination of MDEA and PZ has been highly regarded due to greater chemical stability and less energy required for solvent renewal .…”

Section: Introductionmentioning

confidence: 99%

“…The process analysis discovered that rotational speed and PZ concentration have the most important effects on CO 2 absorption efficiency. 39 In general, the combination of MDEA and PZ has been highly regarded due to greater chemical stability and less energy required for solvent renewal. 40 Xu et al have investigated the influence of PZ on CO 2 loading in MDEA solutions, confirming the usefulness of PZ in enhancing CO 2 loading.…”

Section: ■ Introductionmentioning

confidence: 99%

Evaluating the Effectiveness of Piperazine on Carbon Dioxide Loading in N-Methyl Diethanolamine Aqueous Solutions and Water/Oil Microemulsions

Zolfaghari,

Nasiri,

Haghighi Asl

2024

J. Chem. Eng. Data

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This study investigated the chemical absorption of carbon dioxide gas from a carbon dioxide−nitrogen gas mixture at a low partial pressure of carbon dioxide (0.1−1.0 bar) using a water-in-oil microemulsion system. Gas chemisorption in the aqueous phase was examined using N-methyldiethanolamine (MDEA) at 3 mol kg −1 concentration and piperazine (PZ) at concentrations ranging from 0.3 to 0.9 mol kg −1 . The first stage was to assess the effectiveness of the microemulsion system in comparison to that of the nonemulsion system for gas absorption. Then, the aim was to evaluate the effectiveness of PZ in combination with an amine. The results clearly validate the superior gas absorption performance of the microemulsion system compared to that of the nonemulsion system. Furthermore, concerning the effectiveness of PZ, the results indicate that PZ is more efficient at low partial pressures of carbon dioxide than at high pressures. An interesting observation is that in a solution with a constant concentration of MDEA and PZ, as the partial pressure of carbon dioxide gas changes, PZ performs optimally at a partial pressure of 0.3 bar. Additionally, the results obtained confirm the linearity of the relationship between the mole fraction of PZ in the MDEA/PZ solution and the carbon dioxide loading of the MDEA/PZ solution within this pressure range.

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“…While most of the recent amine-based CO 2 capture studies focus on sorption and/or its thermodynamics, primarily via software simulations, e.g., with Aspen programs [11][12][13][14][15], comparatively little attention has been paid to the reaction kinetics of the CO 2 sorption and desorption cycles with the MDEA/PZ blend [16]. This aspect plays an important role in obtaining further insights into the CO 2 sorption/desorption mechanism for the purpose of boosting enhancements of the related technology [17].…”

Section: Introductionmentioning

confidence: 99%

Experimental Modeling of CO2 Sorption/Desorption Cycle with MDEA/PZ Blend: Kinetics and Regeneration Temperature

Wehrung,

Destefanis,

Caviglia

et al. 2023

Sustainability

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CO2 sorption–desorption cycles with a methyldiethanolamine (MDEA)/piperazine (PZ) blend have been performed with a rotoevaporator. Similar to other CO2 separation technologies, the heating involved in MDEA/PZ solvent regeneration is the most energy-intensive step in the overall CO2 separation process. Thus, this study investigated the desorption kinetics under low-pressure (<200 mbar) and low-temperature conditions in the range from 308 to 363 K with the aim of reducing costs. The CO2 desorption time to unload the samples from ~2.35 mol/kg to below the threshold of 1 mol/kg was reduced from 500 s at 333 K to 90 s at 363 K. The Avrami–Erofoyev model was found to fit the experimental kinetic data accurately. The Arrhenius law calculations provided an activation energy of the CO2 desorption process equal to 76.39 kJ/mol. It was demonstrated that the combination of a pressure reduction and the increase in temperature resulted in an enhancement of the desorption kinetics, especially at low temperatures. The combined effect of these two factors resulted in higher desorption kinetics compared to the individual effects of either factor alone. Solvent regeneration at a low temperature was demonstrated to be a valid option when coupled with pressure reduction.

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Modeling of carbon dioxide absorption by solution of piperazine and methyldiethanolamine in a rotating packed bed

Cited by 20 publications

References 48 publications

CFD Modeling of Reactive Absorption of CO₂ by Aqueous MEA Solution in a Rotating Packed Bed

CFD Modeling of Reactive Absorption of CO₂ by Aqueous MEA Solution in a Rotating Packed Bed

Evaluating the Effectiveness of Piperazine on Carbon Dioxide Loading in N-Methyl Diethanolamine Aqueous Solutions and Water/Oil Microemulsions

Experimental Modeling of CO2 Sorption/Desorption Cycle with MDEA/PZ Blend: Kinetics and Regeneration Temperature

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Modeling of carbon dioxide absorption by solution of piperazine and methyldiethanolamine in a rotating packed bed

Cited by 20 publications

References 48 publications

CFD Modeling of Reactive Absorption of CO2 by Aqueous MEA Solution in a Rotating Packed Bed

CFD Modeling of Reactive Absorption of CO2 by Aqueous MEA Solution in a Rotating Packed Bed

Evaluating the Effectiveness of Piperazine on Carbon Dioxide Loading in N-Methyl Diethanolamine Aqueous Solutions and Water/Oil Microemulsions

Experimental Modeling of CO2 Sorption/Desorption Cycle with MDEA/PZ Blend: Kinetics and Regeneration Temperature

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CFD Modeling of Reactive Absorption of CO₂ by Aqueous MEA Solution in a Rotating Packed Bed

CFD Modeling of Reactive Absorption of CO₂ by Aqueous MEA Solution in a Rotating Packed Bed