Non-ideal flow in an annular photocatalytic reactor

Jović, Franjo; Kosar, Vanja; Tomašić, Vesna; Gomzi, Zoran

doi:10.1016/j.cherd.2011.12.014

Cited by 30 publications

(13 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…At higher pollutant concentration, the removal efficiency will tend to a limit. As expected, the behavior is similar to what has been reported in the literature for some VOCs [14][15][16].…”

Section: Resultssupporting

confidence: 90%

“…Most reported of them consider mass balance of pollutants in either air or solid phase [10,13,14]. Only few models consider pollutants' mass balance for both air and solid phase, and those which take it into account assume a steady-state condition [15,16]. Moreover, in his work, Zhang and coworkers [15] reported an interesting approach to the modeling of photocatalytic oxidation (PCO) reactors.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Kinetic Modeling of VOC Photocatalytic Degradation Using a Process at Different Reactor Configurations and Scales

Assadi¹,

Bouzaza²,

Wolbert³

2015

International Journal of Chemical Reactor Engineering

View full text Add to dashboard Cite

International audienceThis work investigated the performance of isovaleraldehyde (3-methylbutanal) removal from gas streams in photocatalytic reactors at room temperature. The feasibility of pollutant removal using the up-scaled reactor was systematically assessed by monitoring the removal efficiency at different operational parameters, such as geometries of reactor, air flow rate and inlet concentration. A proposal modeling for scaling up the photocatalytic reactors is described and detailed in this present study. In this context, the photocatalytic degradation of isovaleraldehyde (Isoval) in gas phase is studied. In fact, the removal rate has been compared at different continuous ﬂow reactors: a photocatalytic tangential reactor (PTR), planar reactor and P5000 pilot. The effects of the inlet concentration, ﬂow rate, geometries and size of reactors on the removal efficiency are also studied. A kinetic model taking into account the mass transfer step is developed. The modeling is done by introducing an equivalent intermediate (EI) formed by the photo-oxidation of Isoval. This new approach has substantially improved the agreement between modeling and experiments with a satisfactory overall description of the mineralization from lab to pilot scales

show abstract

Section: Resultssupporting

confidence: 90%

Section: Introductionmentioning

confidence: 99%

Kinetic Modeling of VOC Photocatalytic Degradation Using a Process at Different Reactor Configurations and Scales

Assadi¹,

Bouzaza²,

Wolbert³

2015

International Journal of Chemical Reactor Engineering

View full text Add to dashboard Cite

show abstract

“…Other approaches to the modeling of radiant fields in heterogeneous photocatalytic reactors deal with stochastic models, which are based on Monte Carlo simulation [37][38][39], or with the application of Computational Fluid Dynamics (CFD) [21,[40][41][42][43]. The latter based on the constitutive equations of continuous-medium mechanics.…”

Section: Introductionmentioning

confidence: 99%

Effective radiation field model to scattering – Absorption applied in heterogeneous photocatalytic reactors

Mueses

Martínez

Hernández‐Ramírez

et al. 2015

Chemical Engineering Journal

View full text Add to dashboard Cite

Abstract:A new mathematical model for the calculation of the radiation field in heterogeneous photocatalytic reactors using the new concept of "Effective radiation field model" or ERFM is proposed. In this concept, the incident radiation associated to the photons flow is an energy cloud. The generated space-phase and the properties of the cloud are considered to be isotropic and independent of the propagation angle and photon frequency. The isotropic nature of the ERFM concept provides a simpler estimation of the radiation field of a photocatalyst suspension (particles and fluid) for polychromatic radiation spectra such as the solar spectrum.The ERFM is an alternative for the calculus of the spatial distribution of the radiant energy in heterogeneous photocatalytic reactors as an extension of the concept associated to the overall volumetric rate photon absorption -OVRPA. The local volumetric rate of photon absorption (LVRPA) predicted by the ERFM were compared with the predictons from the Six Flux Model (SFM) and the rigorous solution of the radiative transfer equation (RTE).The LVRPA calculated with the ERFM was found to be closer to the solution of the RTE by the Discrete Ordinate Method (DOM). This was attributed to the isotropic phase function which was adopted in both models (ERFM and RTE-DOM).

show abstract

“…OpenFOAM® has been used to resolve the fluid dynamics for different applications in chemical engineering, including the modeling of bubbling fluidized beds , continuous gravity settlers , electrochemical cells , and microreactors . ANSYS® Fluent has also been applied to various chemical reactors including a series of studies on annular reactors , , in which the inlet and outlet port configurations and the internal accessories were found important in improving the mass transport performance of the reactor. Attempts to compare the two CFD codes have been limited, but include work related to incompressible turbomachinery and industrial aerodynamics , .…”

Section: Introductionmentioning

confidence: 99%

Comparative Evaluation of OpenFOAM® and ANSYS® Fluent for the Modeling of Annular Reactors

et al. 2018

View full text Add to dashboard Cite

A three-dimensional numerical model was solved for a turbulent incompressible steady flow and the discrepancies and similarities between the software Open-FOAM and ANSYS Fluent on the flow modeling were analyzed. The evaluation was performed for the meshing, setup, and simulation step of the modeling process. Outcomes were contrasted with experimental data to validate the fluid flow obtained with both softwares. With this aim, an experimental pulse-response technique was applied to obtain the residence time distribution (RTD) curve to be compared with the RTD curves achieved from the modeling. Additionally, images of the tracer transport in the experimental reactor were taken, showing good agreement with the computational fluid dynamics (CFD) predictions.

show abstract

Non-ideal flow in an annular photocatalytic reactor

Cited by 30 publications

References 37 publications

Kinetic Modeling of VOC Photocatalytic Degradation Using a Process at Different Reactor Configurations and Scales

Kinetic Modeling of VOC Photocatalytic Degradation Using a Process at Different Reactor Configurations and Scales

Effective radiation field model to scattering – Absorption applied in heterogeneous photocatalytic reactors

Comparative Evaluation of OpenFOAM® and ANSYS® Fluent for the Modeling of Annular Reactors

Contact Info

Product

Resources

About