Hydrodynamics and mass transfer performance of a microreactor for enhanced gas separation processes

Ganapathy, Harish; Shooshtari, Amir; Dessiatoun, Serguei; Ohadi, Michael M.; Alshehhi, Mohamed

doi:10.1016/j.cej.2014.12.028

Cited by 89 publications

(37 citation statements)

References 87 publications

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“…Ganapathy et al have investigated the chemical absorption of CO 2 into aqueous DEA in a microreactor. The authors have studied mass transfer and hydrodynamic performance of the microreactor.…”

Section: Process Modelingmentioning

confidence: 99%

Mathematical Modeling, Parametric Estimation, and Operational Control for Natural Gas Sweetening Processes

Selvan

Panda

2017

ChemBioEng Reviews

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As a result of the increased energy demand and the required environmental compliance, purification of natural gas (NG) need to be processed through more efficient technologies. Most the NG sources contain H2S and CO2 as acidic contaminants causing corrosion, reduction in the calorific value of the fuel, and toxicity. Removal of these gases (gas sweetening) is mostly performed in a reactive absorber followed by a stripper for solvents regeneration. Amine solvents are very suitable due to their natural affinity towards the acid gases. In the setting‐up of newer plants or retrofitting of old units in existing plants to improve the efficiency of the sweetening process, modeling, optimization, and safer operational control of the process have drawn the attention of many researchers. The development of better models must take into account the synthesis and implementation of proper control strategies. Rate‐based, equilibrium, and kinetic models supported by thermodynamic properties of the components have been discussed here and experiments carried out to identify new process models have also been presented.

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Section: Process Modelingmentioning

confidence: 99%

Mathematical Modeling, Parametric Estimation, and Operational Control for Natural Gas Sweetening Processes

Selvan

Panda

2017

ChemBioEng Reviews

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“…Because the characteristic channel size of a microreactor is usually in the submillimeter scale, the surface to volume ratio is significantly increased, and the diffusion distance of the reacting agents is shortened to a large extent compared to the conventional batch reactor. Therefore, microreactors can achieve very fast mixing and mass/heat transfer, along with precise control over the reaction parameters . In addition, the continuous operation mode of the microreactor can avoid batch‐to‐batch variations, and the numbering‐up strategy adopted with microreactors facilitates the scale‐up from laboratory to industrial sites.…”

Section: Introductionmentioning

confidence: 99%

Microfluidic synthesis of ultrasmall Co nanoparticles over reduced graphene oxide and their catalytic properties

2020

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We prepared a one-stage microfluidic-based method for continuous synthesis of cobalt (Co) nanoparticles over reduced graphene oxide (rGO) to produce Co/rGO composites. These were generated by the coreduction of Co 2+ ions and GO with NaBH 4 which was confined within discrete aqueous plugs segmented by octane as continuous phase. Owing to the excellent transfer properties from recirculation in these plugs, ultrasmall Co nanoparticles were distributed homogeneously on the GO sheets without using any surfactants. As compared to batch methods, the average size of Co nanoparticles and the relative standard deviation decreased from 4.0 ± 1.42 nm and 35.9% to 2.0 ± 0.45 nm and 22.6%, respectively. The as-prepared Co/rGO composites exhibited superior activity towards the catalytic reduction of pnitrophenol to p-aminophenol with NaBH 4 compared with Co nanoparticles and rGO; this enhanced activity could be attributed to the synergistic effect between Co nanoparticles and rGO.

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“…It can offer numerous unique advantages over conventional scale reactors, including excellent mass and heat transfer due to the large interfacial area, reliability, scalability, ease of operation, and inherent safety , . Many reports have demonstrated the excellent performance of microchannel reactors for CO 2 absorption . Results showed that the mass transfer coefficients in microchannel reactors were at least one order of magnitude higher than those in conventional equipment, which was attributed to the larger interfacial area .…”

Section: Introductionmentioning

confidence: 99%

Heat Transfer Characteristics of CO₂ Desorption from N‐Methyldiethanolamine Solution in a Microchannel Reactor

et al. 2018

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The heat transfer performance and energy consumption of CO 2 desorption from rich N-methyldiethanolamine (MDEA) solution were determined experimentally in a straight microchannel reactor. Nucleate boiling was found to be the dominant heat transfer mechanism in this experiment. The heat transfer coefficients were strongly dependent on the heat flux. The solution flow rate was the most influential factor on the heat flux, followed by desorption temperature, MDEA concentration, and CO 2 loading. In addition, an empirical correlation was proposed to predict the experimental heat transfer coefficients.

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Hydrodynamics and mass transfer performance of a microreactor for enhanced gas separation processes

Cited by 89 publications

References 87 publications

Mathematical Modeling, Parametric Estimation, and Operational Control for Natural Gas Sweetening Processes

Mathematical Modeling, Parametric Estimation, and Operational Control for Natural Gas Sweetening Processes

Microfluidic synthesis of ultrasmall Co nanoparticles over reduced graphene oxide and their catalytic properties

Heat Transfer Characteristics of CO₂ Desorption from N‐Methyldiethanolamine Solution in a Microchannel Reactor

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Hydrodynamics and mass transfer performance of a microreactor for enhanced gas separation processes

Cited by 89 publications

References 87 publications

Mathematical Modeling, Parametric Estimation, and Operational Control for Natural Gas Sweetening Processes

Mathematical Modeling, Parametric Estimation, and Operational Control for Natural Gas Sweetening Processes

Microfluidic synthesis of ultrasmall Co nanoparticles over reduced graphene oxide and their catalytic properties

Heat Transfer Characteristics of CO2 Desorption from N‐Methyldiethanolamine Solution in a Microchannel Reactor

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Heat Transfer Characteristics of CO₂ Desorption from N‐Methyldiethanolamine Solution in a Microchannel Reactor