CFD modeling of catalyst pellet for oxidative coupling of methane: Heat transfer and reaction

Autor:	Ramin Maghrebi, Mitra H. Tabatabaei, Nakisa Yaghobi, Siavash Seyednejadian
Rok vydání:	2013
Předmět:	Exothermic reaction Standard enthalpy of reaction business.industry Chemistry General Chemical Engineering Diffusion Thermodynamics Computational fluid dynamics Catalysis Pellet Heat transfer General Materials Science Oxidative coupling of methane business
Zdroj:	Particuology. 11:506-513
ISSN:	1674-2001
DOI:	10.1016/j.partic.2012.08.008
Popis:	This study deals with the phenomena occuring at single-pellet catalyst scale for the oxidative coupling of methane where heat transfer plays an important role. Computational fluid dynamics (CFD) is used for obtaining detailed rate and temperature profiles through the porous catalytic pellet where reaction and diffusion compete. Intra-particle temperature and concentration gradients were taken into account by solving heat transfer coupled with continuity equations in the catalyst pellet. In heat transfer, the energy term due to highly exothermic reaction was considered. Two external programs were successfully implemented into the CFD-code as kinetic and heat of reaction terms. Simulation results showed that reaction was favored at the beginning for the pellet, followed by diffusion predomination. The results of CFD simulation indicate that temperature variation within the catalyst pellet is
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::7e043ddb15d5f2725819dcdeaa6e322b https://doi.org/10.1016/j.partic.2012.08.008 Zobrazit plný text záznamu Full Text from ScienceDirect