Modeling of carbon dioxide removal using membrane contactors

Pakšiová, Daniela; Fikar, Miroslav; Skogestad, Sigurd

doi:10.1109/cyberi.2016.7438596

Cited by 3 publications

(3 citation statements)

References 17 publications

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“…But unlike modeling studies for stand-alone MBC modules, detailed models for the plant-wide simulation of MBC-based processes are still lacking. Recently, Pakšiová et al [27] modeled a coupled MBC process operating at atmospheric pressure for both the separation of CO 2 from methane by absorption and the stripping of CO 2 from the amine solution. Although simplifying modeling assumptions based on mass transfer coefficient and non-wetted operation were made to describe the two MBC units, the plant-wide model could be used to analyze the effects of different liquid and gaseous flow rates on the overall energy consumption.…”

Section: Introductionmentioning

confidence: 99%

Plant-wide assessment of high-pressure membrane contactors in natural gas sweetening – Part II: Process analysis

Quek

Shah

Chachuat

2021

Separation and Purification Technology

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This paper presents a model-based assessment of a natural gas sweetening process combining high-pressure membrane contactor with conventional amine regeneration. The analysis builds on a mathematical model of the membrane contactor developed in the companion paper, which is capable of quantitative predictions of the CO 2 and hydrocarbon absorption in the amine solvent and the solvent evaporative losses to the treated gas. The predictive capability of the plant-wide model is tested against data from a pilot plant operated under industrially relevant conditions at a natural gas processing facility in Malaysia, showing a close agreement of the predictions with the CO 2 outlet purity and the energy consumption at various CO 2 loading in the amine solvent. This enables a model-based analysis of various operational decisions on the plant-wide solvent losses and hydrocarbon recovery from the rich amine. A new semi-lean process configuration that replaces the energy-intensive stripper column by a simple flash separator is shown to reduce the overall energy consumption significantly while still meeting sales gas specification. This new configuration forms the basis for the scale-up of a commercial natural gas sweetening process, which shows a high intensification potential in terms of volume footprint and energy duty compared to conventional amine treating plants.

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Section: Introductionmentioning

confidence: 99%

Plant-wide assessment of high-pressure membrane contactors in natural gas sweetening – Part II: Process analysis

Quek

Shah

Chachuat

2021

Separation and Purification Technology

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“…Table 1 shows the expressions used to estimate the parameters used. With the conditions and descriptions in Table 1, the system operates in a counter-current flow, with constant temperature and negligible pressure drop [19,20,23,24,[36][37][38]. CO2 concentration changes in gas and liquid currents does not affect their properties, keeping the flow rate constant along the process.…”

Section: Geometry and Flowmentioning

confidence: 99%

“…With respect to the transient approach, [23] analyzed the transient results of a membrane contactor operating in parallel flux against some disturbances in properties that cannot be controlled in transient conditions. [24] studies a model for membrane contactors concentrated only on time and compares the unit approach with a cell-based approach. Another cell approach is proposed by [25], where the absorption of CO2 is compared using different solvents: water, 2-amino-2-methyl-1propanol (AMP) and dimethylamine (DEA).…”

Section: Introductionmentioning

confidence: 99%

Analysis of a Dynamic Model for Post-Combustion CO2 Capture on a Hollow Fiber Membrane Contactor

Passos,

Júnior,

Filho

et al. 2023

Preprint

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The Hollow fiber membrane contactor (HFMC) is an intensification process that combines membrane and absorption technologies, being a technology in expansion, so the dynamics of this process is crucial for an increase in industrial scale-up. In this manuscript a rigorous dynamic model of an HFMC is developed and simulated in Python software for the absorption of post-combustion CO2 using a monoethanolamine (MEA) solution, which was validated using available data in literature in steady state. Dynamic simulations were performed to analyze the model's capability to predict the effect of disturbances on the responses of CO2 capture ratio and loading. Four distinct experiments were conducted by step changes and pulse disturbances at the following variables: gas and liquid volumetric flow rates, CO2 composition in flue gases, and CO2 lean load. The gas phase showed a faster response compared to the liquid. The CO2 capture ratio and rich loading presented opposite responses when disturbing both liquid flows, and for the composition and lean loading variations, the capture ratio presented an inverse response characteristic, while the loading showed a delayed response. As the model proved to be capable of returning to the reference state, it can potentially be used for control studies purposes.

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Magnetically controlled systems for CO₂ absorption

Mateev,

Marinova

2024

E3S Web Conf.

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In this paper is presented a conceptual model of magnetically controlled system for CO2 absorption. A design of magnetic air contactor is considered and internal magnetic field in its channels is modelled. It is a closed domain contactor design with controllable internal thermodynamic conditions, additionally influenced by magnetic field. Considered design is providing huge specific surface for dynamic interaction with the processed airflow. Results on magnetic field distribution inside air channels are calculated in order to estimate field homogeneity and force directions on used particles.

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Modeling of carbon dioxide removal using membrane contactors

Cited by 3 publications

References 17 publications

Plant-wide assessment of high-pressure membrane contactors in natural gas sweetening – Part II: Process analysis

Plant-wide assessment of high-pressure membrane contactors in natural gas sweetening – Part II: Process analysis

Analysis of a Dynamic Model for Post-Combustion CO2 Capture on a Hollow Fiber Membrane Contactor

Magnetically controlled systems for CO₂ absorption

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Modeling of carbon dioxide removal using membrane contactors

Cited by 3 publications

References 17 publications

Plant-wide assessment of high-pressure membrane contactors in natural gas sweetening – Part II: Process analysis

Plant-wide assessment of high-pressure membrane contactors in natural gas sweetening – Part II: Process analysis

Analysis of a Dynamic Model for Post-Combustion CO2 Capture on a Hollow Fiber Membrane Contactor

Magnetically controlled systems for CO2 absorption

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Product

Resources

About

Magnetically controlled systems for CO₂ absorption