Packing characterization: Absorber economic analysis

Wang, Chao; Seibert, A. Frank; Rochelle, Gary T.

doi:10.1016/j.ijggc.2015.07.027

Cited by 15 publications

(17 citation statements)

References 9 publications

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“…Estimated packing height to achieve 47% of CO 2 capture efficiency and pressure drop for different packing materials at 313 K, G = 3.4 kg/m 2 s, and L = 10.5 kg/m 2 s for a feed with 8 vol % CO 2 in air and a solution of 22 wt % MEA in water. Solid bar corresponds to experimental results, and hashed bars correspond to estimations using eq for different packing …”

Section: Resultsmentioning

confidence: 99%

“…At atmospheric pressure and the given solvent concentration, the CO 2 interaction with MEA can be classified as a case with fast reaction and high concentration of the reactant in the liquid phase (Case D). The kinetic constant at the lean and rich loading was from Dugas, and the diffusivity was taken from Li et al Packing height was estimated using eq , considering an inlet concentration of CO 2 of 8 vol % and a capture rate of 47%, as determined experimentally for CSP. …”

Section: Methodsmentioning

confidence: 99%

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Corrugated Screen Packing (CSP) for Improved Gas Liquid Absorption in Cocurrent Downflow Packed Columns Operating in a Pulse Flow Regime

Virla

Mahmoudkhani²,

Hargrove³

et al. 2020

Ind. Eng. Chem. Res.

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This study evaluated for the first time the performance of CSP in a cocurrent downflow packed column operating at a pulsing flow regime. Packing performance was evaluated on a bench-scale absorber equipped with high-speed imaging and pressure gauges. Absorption experiments were conducted at 101.3 kPa using an 8 vol % CO2/air mixture and a 22 mol % MEA solution to determine the overall mass transfer coefficient, K OGa, and absorber height requirements. CSP was shown to be effective in facilitating pulsing at a lower pressure drop by enhancing liquid retention. Periodic pulses generated bubbles of 3–14 mm in diameter, interfacial areas of 200–1600 m2/m3, and K OGa 2–10 times larger than those reported for packed columns under trickle flow regime. CSP showed 2–4 times higher K OGa per unit of pressure drop compared to random packing. CSP performance represents an attractive opportunity to reduce capital (column size reduction and associated installation costs) and operating costs (lower pressure drop and pump energy) for carbon capture and chemical industry essential for the transition toward a low-carbon economy.

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Corrugated Screen Packing (CSP) for Improved Gas Liquid Absorption in Cocurrent Downflow Packed Columns Operating in a Pulse Flow Regime

Virla

Mahmoudkhani²,

Hargrove³

et al. 2020

Ind. Eng. Chem. Res.

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show abstract

“…The average physical properties for area, k L , and k G measurements are given in Tables – . Detailed descriptions of the experimental methods and apparatuses can be found in previous papers. − The complete experimental data set can be found in work by Wang (pp 172–195).…”

Section: Methodsmentioning

confidence: 99%

“…The effective mass-transfer area model was developed based on the experimental data. − The stainless steel structured packings (Table ) were manufactured by Sulzer ChemTech, GTC Technology, and Raschig. Every packing surface except those of the two RSP packings was perforated.…”

Section: Mass-transfer Effective Area Modelmentioning

confidence: 99%

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Dimensionless Models for Predicting the Effective Area, Liquid-Film, and Gas-Film Mass-Transfer Coefficients of Packing

Wang

Song

Seibert

et al. 2016

Ind. Eng. Chem. Res.

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A total of 11 structured packings with surface areas (a p ) from 125 to 500 m 2 /m 3 and corrugation angles (θ) from 45 to 70°were studied to explore the effects of the packing geometry on mass transfer. A new concept, the mixing point density, was proposed to represent the effects of a p and θ. A generalized method to calculate the mixing point density from a P and θ was developed. Dimensionless mass-transfer models are developed to predict the effective area, liquid-film, and gas-film mass-transfer coefficients, with the mixing and Reynolds numbers imbedded into the correlations. Compared with literature models, the models developed in this work capture the effects of the packing geometry and predict the mass-transfer properties in aqueous systems.

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Direct air capture with amino acid solvent: Operational optimization using a crossflow air‐liquid contactor

An,

Li,

Yang

et al. 2024

AIChE Journal

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Direct air capture (DAC) is a negative emission technology for removing CO2 from the atmosphere to maintain the CO2 level within a reasonable range so as to address greenhouse effects. In this study, the operational optimization of lab‐scale DAC has been investigated using a crossflow air‐liquid contactor loaded with a three dimensionally printed Gyroid packing structure and a potassium sarcosinate solvent. The effects of various parameters, including feed air flow rate, liquid solvent flow rate, contactor geometry, and ambient temperature, are examined. The results demonstrate that the Gyroid packing design achieves comparable CO2 capture performance to conventional packed beds but with a significantly lower pressure drop of up to 77.8%, suggesting its potential as an efficient and cost‐effective solution for gas–liquid contactors in DAC. Additionally, the study explores the climate impact on CO2 capture performance and finds that as the air temperature increases from 35 to 95°F at a fixed relative humidity of 80%, the CO2 capture rate increased from 23.2% to 46.8% with better stability. The research highlights the importance of optimizing contactor design and operational conditions to improve the CO2 capture rate and feasibility of DAC systems as a negative emission technology for addressing greenhouse effects.

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Packing characterization: Absorber economic analysis

Cited by 15 publications

References 9 publications

Corrugated Screen Packing (CSP) for Improved Gas Liquid Absorption in Cocurrent Downflow Packed Columns Operating in a Pulse Flow Regime

Corrugated Screen Packing (CSP) for Improved Gas Liquid Absorption in Cocurrent Downflow Packed Columns Operating in a Pulse Flow Regime

Dimensionless Models for Predicting the Effective Area, Liquid-Film, and Gas-Film Mass-Transfer Coefficients of Packing

Direct air capture with amino acid solvent: Operational optimization using a crossflow air‐liquid contactor

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