Comparison of a Pseudocontinuous, Heterogeneous 2D Conductive Monolith Reactor Model to a 3D Computational Fluid Dynamics Model

Autor:	David Schlereth, Olaf Hinrichsen
Rok vydání:	2014
Předmět:	Exothermic reaction Pressure drop business.industry Chemistry General Chemical Engineering First-order reaction Thermodynamics General Chemistry Computational fluid dynamics Industrial and Manufacturing Engineering Thermal conductivity Mass transfer Heat transfer Honeycomb business
Zdroj:	Industrial & Engineering Chemistry Research. 53:11550-11556
ISSN:	1520-5045 0888-5885
DOI:	10.1021/ie500041e
Popis:	Conductive catalytic honeycombs of a low-void fraction have gained renewed interest for use in the production of bulk chemicals because of favorable heat transfer properties and a low pressure drop compared to fixed-bed reactors. In this work, a pseudocontinuous, heterogeneous 2D conductive honeycomb reactor model is compared to a detailed 3D computational fluid dynamics model for the case of an irreversible, exothermic first order reaction with emphasis on the description of heat transfer. Excellent agreement in terms of maximum temperature and conversion is found for moderate conditions preferable for technical purposes when using the symmetric model for calculation of the effective radial heat conductivity. Deviations of maximum temperatures at harsher conditions are attributed to the use of global heat and mass transfer coefficients in the 1D channel model and the inherent assumption of a radially fully segregated flow in the continuum approach.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::e047fd0d5dcb7191f25e3068e049d874 https://doi.org/10.1021/ie500041e Zobrazit plný text záznamu