Wall-flow filters with wall-integrated oxidation catalyst: A simulation study

Votsmeier, Martin; Gieshoff, J.; Kögel, M.; Pfeifer, Markus; Knoth, J. F.; Drochner, Alfons; Vogel, Herbert

doi:10.1016/j.apcatb.2005.12.032

Cited by 20 publications

(11 citation statements)

References 5 publications

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“…The model, therefore, becomes isothermal like previous studies (e.g. [7], [19]). We proceed in this way because we want to begin with the simplest situation and gradually increase the complexity of the model.…”

Section: Single Reaction Model (Isothermal)supporting

confidence: 67%

“…Contrary to previous studies (e.g. [7], [19]), which only account for isothermal models, in this work the heat generated by the exothermic reactions is considered and coupled to the flow dynamics and the reaction constants. We also study the case of competing reactions, where carbon monoxide competes for access to the catalyst surface with unreacted hydrocarbons.…”

Section: Introductionmentioning

confidence: 99%

“…Ultimately, the goal is to assess if common isothermal models commonly used in literature (e.g. [7], [19]) are adequate to describe the conversion profiles inside the filter, or more complex models are required. In the latter case, by comparing models with various levels of complexity, we also aim at establishing the minimum degree of complexity required to effectively model the system under investigation.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Development of a combined solver to model transport and chemical reactions in catalytic wall-flow filters

Allouche

Enjalbert

Alberini

et al. 2017

Chemical Engineering Research and Design

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Section: Single Reaction Model (Isothermal)supporting

confidence: 67%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Development of a combined solver to model transport and chemical reactions in catalytic wall-flow filters

Allouche

Enjalbert

Alberini

et al. 2017

Chemical Engineering Research and Design

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show abstract

“…The subsequent results indicate that flow-through-type structures have better conversion efficiencies than wall-flow style supports. In a more recent work of the same group (Votsmeier et al 2007 ), results show that the above simplification is valid only at high flow velocities. They present a less complicated modeling approach claiming that the flow-through-type reactor is more efficient due to increased reaction residence time (Miller and Li 2000 ).…”

Section: Use Of Dpf As An Oxidation Catalystmentioning

confidence: 91%

Catalyzed diesel particulate filter modeling

Koltsakis

Haralampous

Depcik

et al. 2013

Reviews in Chemical Engineering

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An increasing environmental concern for diesel particulate emissions has led to the development of efficient and robust diesel particulate filters (DPF). Although the main function of a DPF is to filter solid particles, the beneficial effects of applying catalytic coatings in the filter walls have been recognized. The catalyzed DPF technology is a unique type of chemical reactor in which a multitude of physicochemical processes simultaneously take place, thus complicating the tasks of design and optimization. To this end, modeling has contributed considerably in reducing the development effort by offering a better understanding of the underlying phenomena and reducing the excessive experimental efforts associated with experimental testing. A comprehensive review of the evolution and the most recent developments in DPF modeling, covering phenomena such as transport, fluid mechanics, filtration, catalysis, and thermal stresses, is presented in this article. A thorough presentation on the mathematical model formulation is given based on literature references and the differences between modeling approaches are discussed. Selected examples of model application and validation versus the experimental data are presented.

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“…Compared to 1-D modelling [1,2], this 2-D model allows for the consideration of the effect of heat losses, thermal boundary layer at filter inlet and flow maldistribution as a result of non-uniform regeneration [3][4][5]. The model is equipped with intra-layer discretization to account for the coupling between reaction and diffusion phenomena in catalyzed filters [6][7][8][9].…”

Section: Modeling Of Catalysed Filter Regenerationmentioning

confidence: 99%

2D simulation of the regeneration performance of a catalysed DPF for heavy-duty applications

Frey

Wenninger²,

Krutzsch³

et al. 2007

Top Catal

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The objective of this work is to study the regeneration performance of a heavy-duty DPF application. The simulation of the local temperatures and pressure drop during the regeneration could be validated with experimental data, indicating the need for a 2D model approach to describe this particular catalysed DPF configuration. Furthermore, the model was applied to illustrate the axial and radial regeneration phenomena focusing on soot and temperature distribution.

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Wall-flow filters with wall-integrated oxidation catalyst: A simulation study

Cited by 20 publications

References 5 publications

Development of a combined solver to model transport and chemical reactions in catalytic wall-flow filters

Development of a combined solver to model transport and chemical reactions in catalytic wall-flow filters

Catalyzed diesel particulate filter modeling

2D simulation of the regeneration performance of a catalysed DPF for heavy-duty applications

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