Influence of Particles on Amine Losses During CO2 Capture: A Process Simulation Coupled Aerosol Dynamics Model

Dhanraj, David; Biswas, Pratim

doi:10.1016/j.ijggc.2020.103179

Cited by 8 publications

(6 citation statements)

References 31 publications

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“…This suggests a propensity for MEA to migrate toward areas with a higher CO 2 presence, particularly zones where CO 2 and H 2 O coexisted. This phenomenon potentially favored the carbonation reaction at the clusters to form carbonate …”

Section: Resultsmentioning

confidence: 99%

“…However, the effect of the solvent temperature on amine aerosol emissions remains disputed. Some researchers argue that a rise in solvent temperature increases the volatility of amines, thereby enhancing amine aerosol emissions. , Others assert that an increase in solvent temperature actually reduces gas-phase saturation and suppresses amine condensation on aerosols. , Many attempts have been made to describe this complex process by establishing a nucleation model, a mass transfer model, an interparticle agglomeration model, and even a reaction model. − Despite these advancements, existing models present significant discrepancies in predicting the formation and growth of amine aerosol. These models often treat component transport as the movement of individual molecules, neglecting the dynamics of cluster formation in both mass transfer and nucleation.…”

Section: Introductionmentioning

confidence: 99%

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Insights into Aerosol Emission Control in the Postcombustion CO₂ Capture Process: From Cluster Formation to Aerosol Growth

Yang,

Xian,

et al. 2024

Environ. Sci. Technol.

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Aerosols produced in the amine carbon capture process can lead to secondary environmental pollution. This study employs molecular dynamics (MD) simulations to investigate cluster formation, amine behavior, and aerosol growth of amines, essential for reducing amine aerosol emissions. Results showed that the cluster evolution process can be divided into cluster formation and growth in terms of molecular content, and the nucleation rate for the present systems was estimated in the order of 10 28 cm −3 s −1 . CO 2 absorption was observed alongside successful nucleation, with CO 2 predominantly localizing in the cluster's outer layer postabsorption. Monoethanolamine (MEA) exhibited robust electrostatic interactions with other components via hydrogen bonding, leading to its migration toward regions where CO 2 and H 2 O coexisted within the cluster. While MEA presence markedly spurred cluster formation, its concentration had a marginal effect on the final cluster size. Elevating water content can augment the aerosol growth rate. However, altering the gas saturation is possible only within narrow confines by introducing vapor. Contrarily, gas cooling introduced dual, opposing effects on aerosol growth. These findings, including diffusion coefficients and growth rates, enhance theoretical frameworks for predicting aerosol formation in absorbers, aiding in mitigating environmental impacts of aminebased carbon capture.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Insights into Aerosol Emission Control in the Postcombustion CO₂ Capture Process: From Cluster Formation to Aerosol Growth

Yang,

Xian,

et al. 2024

Environ. Sci. Technol.

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“…Amine volatility and exothermicity of liquid phase reactions between CO 2 and amine evaporate the amine in the absorber, while condensation nuclei (including fine droplets from homogeneous condensation, fine particles, etc.) in the flue gas result in aerosol emissions . Hence, these aerosols grow by condensation and coagulation and then leave the absorber together with the condensed amine.…”

Section: Introductionmentioning

confidence: 99%

“…in the flue gas result in aerosol emissions. 15 Hence, these aerosols grow by condensation and coagulation and then leave the absorber together with the condensed amine.…”

Section: ■ Introductionmentioning

confidence: 99%

Reducing Aerosol Emissions by Decoupled Parameter Management during the CO₂ Capture Process in a Multi-stage Circulation Absorber

Shao

Liu

Wang

et al. 2023

Environ. Sci. Technol.

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Aerosol emissions from the CO 2 capture process have a significant impact in terms of solvent loss and environmental pollution. Here, we propose a novel approach with multi-stage circulation for CO 2 capture and synergistic aerosol reduction, which divides the absorption section into three circulation stages and reduces aerosol emissions through decoupled operation of the three absorption sections and the management of solvent CO 2 loadings. Experimental results show that with the decoupled management of the liquid−gas ratio and solvent temperature in absorption sections, the aerosol mass concentration at the outlet of the 3rd absorption section can be reduced by 25.6% to a minimum of 349.7 mg/ m 3 at a liquid−gas ratio of 43.2 L/m 3 and a solvent temperature of 303 K. Furthermore, aerosol removal is performed by setting up a water wash section after the absorption section. The aerosol mass concentration at the outlet of the absorber is reduced to 168.6 mg/m 3 with the regulation of the wash water temperature and flow rate. In addition, improvements are proposed for the combination of the utilization of recovered solvents and the co-removal of SO 2 . This study provides innovative insights into the design of the CO 2 capture system and the reduction of aerosol emissions, which are of great significance for the mitigation of global warming and the control of environmental pollution.

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“…In several modeling studies, ,− an aerosol dynamic model was integrated into the process simulators to investigate the particle growth and size distribution of droplets in amine absorption columns. The simulation results mostly were not validated with experimental data, and none of them could predict the rate of nucleation and amine loss due to the nucleation process.…”

Section: Introductionmentioning

confidence: 99%

On Solvent Losses in Amine Absorption Columns

Yazdipour

Torkmahalleh

Kamyabi

et al. 2022

ACS Sustainable Chem. Eng.

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The current work was dedicated to developing a novel model based on the mass transfer theory in combination with classical nucleation theory in order to predict the amount of solvent loss in the amine absorption columns. The work was adopted to consider the physical mechanisms leading to amine loss, including mass transfer, aerosol formation, and evaporation of the amine. Aspen Plus simulator and MATLAB software were integrated to make such simulations possible through a round−trip interaction. The model predictions for the temperature and concentration of different components were compared with the literature experimental data, and a fair agreement was seen. Then, the effects of some parameters such as the inlet stream temperature, particle concentration, and diameter on the amine loss were investigated. The results of this study may help engineers and practitioners properly design the amine absorption columns to reduce amine consumption.

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Influence of Particles on Amine Losses During CO2 Capture: A Process Simulation Coupled Aerosol Dynamics Model

Cited by 8 publications

References 31 publications

Insights into Aerosol Emission Control in the Postcombustion CO₂ Capture Process: From Cluster Formation to Aerosol Growth

Insights into Aerosol Emission Control in the Postcombustion CO₂ Capture Process: From Cluster Formation to Aerosol Growth

Reducing Aerosol Emissions by Decoupled Parameter Management during the CO₂ Capture Process in a Multi-stage Circulation Absorber

On Solvent Losses in Amine Absorption Columns

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Influence of Particles on Amine Losses During CO2 Capture: A Process Simulation Coupled Aerosol Dynamics Model

Cited by 8 publications

References 31 publications

Insights into Aerosol Emission Control in the Postcombustion CO2 Capture Process: From Cluster Formation to Aerosol Growth

Insights into Aerosol Emission Control in the Postcombustion CO2 Capture Process: From Cluster Formation to Aerosol Growth

Reducing Aerosol Emissions by Decoupled Parameter Management during the CO2 Capture Process in a Multi-stage Circulation Absorber

On Solvent Losses in Amine Absorption Columns

Contact Info

Product

Resources

About

Insights into Aerosol Emission Control in the Postcombustion CO₂ Capture Process: From Cluster Formation to Aerosol Growth

Insights into Aerosol Emission Control in the Postcombustion CO₂ Capture Process: From Cluster Formation to Aerosol Growth

Reducing Aerosol Emissions by Decoupled Parameter Management during the CO₂ Capture Process in a Multi-stage Circulation Absorber