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Use of 3D-printed mixers in laboratory reactor design for modelling of heterogeneous catalytic converters
Chalmers University of Technology, Sweden.ORCID iD: 0000-0001-6458-9756
Chalmers University of Technology, Sweden.ORCID iD: 0000-0003-0056-5442
Chalmers University of Technology, Sweden.ORCID iD: 0000-0001-8789-9052
RISE Research Institutes of Sweden, Materials and Production, Manufacturing Processes.ORCID iD: 0000-0002-4163-2464
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2021 (English)In: Chemical Engineering and Processing, ISSN 0255-2701, E-ISSN 1873-3204, Vol. 164, article id 108325Article in journal (Refereed) Published
Abstract [en]

A method for identifying radial concentration maldistribution in synthetic catalyst activity test (SCAT) benches, is presented, where spatially resolved concentration measurements are not available. The developed methodology was successfully tested for an injection-based SCAT. To resolve the radial concentration maldistribution a static mixer was designed, 3D-printed and inserted upstream the test sample. The methodology could also prove the effectiveness of the mixer, which did not only resolve the concentration maldistribution but also avoided causing reaction disturbances. The resulting increased axial dispersion from the turbulence created by the static mixer was evaluated using a 3D CFD model in Ansys Fluent 19. The axial dispersion of the injection-based SCAT bench was compared to a premixed SCAT bench through classical Aris-Taylor calculations. The results from the axial dispersion calculations show that the injection-based design with the use of a static mixer is far superior to the premixed design – both with regards to pulse broadening but also time delay. This is highly desirable for modelling studies towards zero emission exhaust aftertreatment. © 2021 The Authors

Place, publisher, year, edition, pages
Elsevier B.V. , 2021. Vol. 164, article id 108325
Keywords [en]
3D-printing, Axial dispersion, Radial mixing, Reactor design, Static mixer, Step experiment
National Category
Energy Engineering
Identifiers
URN: urn:nbn:se:ri:diva-52829DOI: 10.1016/j.cep.2021.108325Scopus ID: 2-s2.0-85103133485OAI: oai:DiVA.org:ri-52829DiVA, id: diva2:1547431
Note

Funding details: Fellowships Fund Incorporated, FFI, 42814-1; Funding details: Chalmers Tekniska Högskola; Funding details: Energimyndigheten; Funding text 1: All project members, Patrik Wåhlin at Chalmers University of Technology as well as the technical staff at Johnson Matthey are deeply acknowledged for their help with performing and analyzing the experiments. Huge thanks to RISE Sweden for printing and providing the project with the finalized mixer. The Swedish Energy Agency (FFI Project 42814-1) is acknowledged for financial support.; Funding text 2: All project members, Patrik W?hlin at Chalmers University of Technology as well as the technical staff at Johnson Matthey are deeply acknowledged for their help with performing and analyzing the experiments. Huge thanks to RISE Sweden for printing and providing the project with the finalized mixer. The Swedish Energy Agency (FFI Project 42814-1) is acknowledged for financial support.

Available from: 2021-04-26 Created: 2021-04-26 Last updated: 2024-06-24Bibliographically approved

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Johansson, Emil

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