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Unsteady three-dimensional theoretical model and numerical simulation of a 120-kW chemical looping combustion pilot plant

Hamidouche, Ziad and Masi, Enrica and Fede, Pascal and Simonin, Olivier and Mayer, Karl and Penthor, Stefan Unsteady three-dimensional theoretical model and numerical simulation of a 120-kW chemical looping combustion pilot plant. (2019) Chemical Engineering Science, 193. 102-119. ISSN 0009-2509

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Official URL: https://doi.org/10.1016/j.ces.2018.08.032

Abstract

In this paper, reactive unsteady three-dimensional numerical simulations of a chemical looping combustion (CLC) unit are presented. The configuration is a 120-kW pilot plant working with perovskite, CaMn0.9Mg0.1O3d, as the selected oxygen carrier. Numerical simulations were performed using NEPTUNE_CFD code in the frame of an Euler-Euler approach by computing both gas and solid phases in an Eulerian technique, accounting for specific closures in order to model the interphase mass, and momentum and energy transfers. Heterogeneous reduction and oxidation (gas–solid) reactions were modeled by means of a grain model to account for the competing mechanisms of the chemical reaction onto the grain surface, the gaseous diffusion through the product layer around the grain, and the external transfer through the gas mixture surrounding the particle. Results from numerical simulations were assessed against experimental measurements and analyzed in order to acquire insight on the local behavior of reactive gas-particle flow in the CLC system. The theoretical/numerical tool developed in this work can be used for the design upgrade of crucial parts of the system in the stage of scaling-up from pilot to industrial plants.

Item Type:Article
HAL Id:hal-02047802
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Other partners > Technische Universität Wien - TU Wien (AUSTRIA)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
Laboratory name:
Funders:
European Commission
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Deposited On:25 Feb 2019 10:25

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