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MODELING OF CEMENT ROTARY KILN UNDER OXY-COMBUSTION WITH A COUPLED MULTI-SOLVER APPROACH

Abstract : The cement rotary kiln is the heart of a cement plant. Unfortunately, it also contributes for a great part in CO2 emissions. Studies and research have reached a plateau in terms of energy efficiency and CO2 emissions reduction for combustion with air. Therefore, oxy-combustion that seems to be a promising solution is going to be modeled. On the other hand, traditional modeling of the entire rotary kiln using a Computational Fluid Dynamics (CFD) approach requires unreasonable calculation time and a very fine meshing. A practical approach is thus proposed. This approach consists on modeling each phenomenon on a dedicated solver with adequate meshing and then coupling the solvers to get the required solution. The Component Interaction Network (CIN) is used to solve 3D conduction and radiation by describing the thermal system as a set of nonoverlapping components and modeling their interactions. CFD is used to solve air flow details and the combustion reaction. A model of a cement rotary kiln under normal operating conditions was created following this method and validated based on literature results. Once the model validated, a study of the kiln under oxy-combustion was lead to predict the behavior of the kiln and the feasibility of such a process.
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https://hal-mines-paristech.archives-ouvertes.fr/hal-01462195
Contributor : Joelle Andrianarijaona <>
Submitted on : Wednesday, February 8, 2017 - 5:10:20 PM
Last modification on : Thursday, September 24, 2020 - 4:56:02 PM

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  • HAL Id : hal-01462195, version 1

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Rachelle Abou Jaoude, Boutros Ghannam, Maroun Nemer. MODELING OF CEMENT ROTARY KILN UNDER OXY-COMBUSTION WITH A COUPLED MULTI-SOLVER APPROACH. The 65th Canadian Chemical Engineering Conference (csche2015), Oct 2015, Calgary, Canada. ⟨hal-01462195⟩

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