Residence time distribution studies in microstructured plate reactors

Cantú-Pérez, Alberto; Bi, Shuang; Barrass, Simon; Wood, M; Gavriilidis, Asterios

doi:10.1016/j.applthermaleng.2010.04.024

Cited by 15 publications

(12 citation statements)

References 23 publications

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“…These models imply a perfect Dirac injection that is experimentally difficult to perform. To take into account the real injection, a deconvolution method is often used to treat the entrance signal [8,17]. But this mathematical treatment can lead to a loss of information, especially a loss concerning the trail of the injection.…”

Section: Rtd Experimentsmentioning

confidence: 99%

“…It consists in comparing the outlet signal with an analytical solution provided by a convectiondispersion model [8,17,18] or a succession of perfectly mixed tanks model [19]. These models imply a perfect Dirac injection that is experimentally difficult to perform.…”

Section: Rtd Experimentsmentioning

confidence: 99%

“…Braune et al [4] then Buisson et al [5] also demonstrated the efficiency of mass transfer in Corning mixing module by performing selective reactions. Pressure drop and residence time distribution in Corning reactors have already been investigated [6,7] and residence time distribution have also been studied in Chart ShimTec1 based technology by Cantu-Perez et al [8]. However, the experiments were carried out with water for pressure drop measurements and generic correlations are missing to estimate the hydrodynamic behavior using quantitative parameters.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Pressure drop and axial dispersion in industrial millistructured heat exchange reactors

Moreau

Raimondi

Sauze

et al. 2015

Chemical Engineering and Processing: Process Intensification

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A B S T R A C THydrodynamic characterization by means of pressure drop and residence time distribution (RTD) experiments is performed in three millistructured heat exchange reactors: two Corning reactors (further referred to as Corning HP and Corning RT) and a Chart reactor. Pressure drop is measured for different flow rates and fluids. Fanning friction factor is then calculated and its evolution versus Reynolds number is plotted for each reactor, showing the influence of the geometrical characteristics of the reactors on this parameter. From RTD experiments, axial dispersion coefficients that allow calculating Péclet numbers are identified by solving the convection-dispersion equation. The results highlight plug flow behavior of these reactors for the range of flow rates studied. Péclet number in Corning HP remains constant in the range of Reynolds number studied. Its specific pattern is designed to generate mixing structures that allow homogenization of the tracer over the cross-section. It explains the plug flow behavior of this reactor even at low Reynolds number but generates high pressure drop. Péclet number in Corning RT and Chart ShimTec 1 increases with Reynolds number. This evolution is encountered for straight circular pipes in turbulent regime and confirms the pressure drop analysis.

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Section: Rtd Experimentsmentioning

confidence: 99%

Section: Rtd Experimentsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Pressure drop and axial dispersion in industrial millistructured heat exchange reactors

Moreau

Raimondi

Sauze

et al. 2015

Chemical Engineering and Processing: Process Intensification

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show abstract

“…These larger systems are more conducive for performing tracer measurements, and many reactor geometries have associated analytical solutions [13,14]. The application of RTD in microchemical processing technology has been investigated by various groups over the last 10 years [15][16][17][18][19][20], yet this remains a relatively new application and more work is necessary to understand the potential utility of this approach.…”

Section: Introductionmentioning

confidence: 99%

“…Cantu-Perez and colleagues investigated residence time of a bare rectangular channel and one with herringbone structures for promoting mixing [16] and more recently investigated RTD in microstructured reactors containing either straight channels or zig-zag channels [17]. RTD in a retention reactor and coaxial heat exchanger in a commerical microreactor was investigated for improving processing time control [18].…”

Section: Introductionmentioning

confidence: 99%

Characterization of Microchannel Hemodialyzers Using Residence Time Distribution Analysis

Coblyn¹,

Truszkowska²

2016

J Flow Chem

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Microchannel-based hemodialysis has a potential to improve survival rates and quality of life for end-stage renal disease patients compared to conventional hemodialysis technology. Characterization of hydrodynamic behavior in microchannel geometries is necessary for improving flow uniformity, a critical challenge in realizing a commercial device. A test loop was developed for measuring the impulse response of a tracer dye injected into a dialyzer test article for the purpose of developing residence time distributions (RTD) to characterize lamina design. RTD variance tended to lower for designs that are more dominated, volume-wise, by the microchannel array versus the headers. RTD results also emphasize how defect issues can significantly impact a microchannel device via discrepancies between conceptual and operational devices. A multisegmented CFD model, developed for pairing with the impulse response test loop and dialyzer, showed good agreement between visual observation of the tracer in simulations and experiments, and the shape and peak of the output profiles.

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Micro Process Technology, 2. Processing

Hessel

Noël

2012

Ullmann's Encyclopedia of Industrial Chemistry

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The article contains sections titled: 1. Reaction Engineering Potential–Transport Intensification 2. Reaction Engineering Potential—Chemical Intensification (Novel Process Windows) 2.1. Chemical Applicability 2.2. Chemical Intensification through Harsh Conditions: Novel Process Windows 2.3. Chemical Intensification through Highly Reactive Intermediates: Flash Chemistry 3. Process‐Design Intensification (Novel Process Windows) 4. Micromixers 4.1. Mixing Principles 4.2. Active and Passive Micromixers 4.3. Diffusion‐Based Micromixers 4.3.1. Y‐ and T‐Type Lamination Mixing 4.3.2. Hydrodynamic and Geometric Focusing for Lamellae Flows 4.3.3. Multilaminating Mixing 4.3.4. Cyclone Mixing 4.4. Split‐and‐Recombine Micromixers 4.4.1. Recycle‐Flow Coanda‐Effect Micromixer 4.4.2. Barrier‐Embedded Micromixer 4.4.3. Caterpillar Micromixer 4.5. Chaotic Advection Micromixers 4.5.1. Herringbone Groove Micromixer 4.5.2. Bended Micromixer 4.6. Turbulent Micromixers—Jet Mixing 4.7. Design and Fabrication of Micromixers 4.7.1. Microfabrication 4.7.2. Modeling 4.7.3. Micromixer Design Development and Related New Microfluidic Principles 4.8. Mixing Characterization 4.8.1. Analytical Techniques 4.8.2. Hydrodynamics and Mixing 4.8.3. Residence Time Distribution 4.9. Applications of Micromixer Technologies 4.9.1. Polymerization 4.9.2. Organic and Bioorganic Reactions 4.9.3. Particle Generation 4.9.4. Droplet Generation, Encapsulation, and Polymer Particle Production 4.9.5. Scale‐out and Fluid Distribution 5. Micro Heat Exchangers 5.1. Heat Exchange Fundamentals 5.2. Classification of Micro Heat Exchangers 5.2.1. Cross‐Flow Heat Exchanger 5.2.2. Counterflow Heat Exchanger 5.2.3. Electrically Powered Heat Exchangers 5.2.4. Microwave Heat Exchanger 5.2.5. Heat‐Pipe Heat Exchanger 5.3. Heat‐Transfer Characterization and Enhancement 5.4. Fouling of Micro Heat Exchangers 5.5. Scale‐out of Micro Heat Exchangers 6. Microevaporators 7. Flow Separation 7.1. State of the Art in Flow Separation 7.2. Micro Extractors 7.3. Micro Distillators/Rectificators 7.4. Micro Chromatography Devices 7.5. Micro Membrane Devices 7.6. Integrated Reaction–Separation Devices

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Residence time distribution studies in microstructured plate reactors

Cited by 15 publications

References 23 publications

Pressure drop and axial dispersion in industrial millistructured heat exchange reactors

Pressure drop and axial dispersion in industrial millistructured heat exchange reactors

Characterization of Microchannel Hemodialyzers Using Residence Time Distribution Analysis

Micro Process Technology, 2. Processing

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