Numerical and experimental analysis for simulating fuel reactor in chemical looping combustor system
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Numerical and experimental analysis for simulating fuel reactor in chemical looping combustor system Tamer M. Ismail1 • Lu Ding2 • Khaled Ramzy1 • M. Abd El-Salam3
Received: 25 January 2020 / Revised: 21 April 2020 / Accepted: 8 July 2020 The Author(s) 2020
Abstract The greenhouse problem has a significant effect on our communities such as, health and climate. Carbon dioxide is one of the main gases that cause global warming. Therefore, CO2 capture techniques have been the focus of attention these days. The chemical looping combustion technique adopted the air reactor and fuel reactor to recycle heat energy. This study presents a numerical and experimental investigation on a fuel reactor in chemical looping combustor (CLC) system. The present numerical model is introduced by the kinetic theory of granular flow and coupled with gas–solid flow with chemical reactions to simulate the combustion of solids in the CLC. The k–e turbulent model was used to model the gas phase and the particle phase. The developed model simplify the prediction of flow patterns, particle velocities, gas velocities, and composition profiles of gas products and the distribution of heterogeneous reaction rates under the same operating conditions. The predicted and experimental results were compared according to the basis of determination coefficient (R2). In addition the results showed that there is a good agreement between the predicted and experimental data. The value of (R2) for CO, CO2 and CH4 was 0.959, 0.925 and 0.969 respectively. This shows that the present model is a promising simulation for solid particle combustion and gives the power direction for the design and optimization of the CLC systems. Keywords Chemical looping combustion Mathematical modeling Fluidized bed Coal Kinetic model
1 Introduction
Electronic supplementary material The online version of this article (https://doi.org/10.1007/s40789-020-00351-y) contains supplementary material, which is available to authorized users. & Tamer M. Ismail [email protected]; [email protected] & Khaled Ramzy [email protected]; [email protected] 1
Department of Mechanical Engineering, Suez Canal University, Ismailia, Egypt
2
Institute of Clean Coal Technology, East China University of Science and Technology, Shanghai 200237, China
3
Department of Basic Science, Cairo University, Giza, Egypt
The greenhouse effect has been the focus of attention of many scientists recently. Carbon dioxide is treated as the greenhouse gas; the formation of carbon dioxide as a result of the combustion of fossil fuels is considered as a contributing to an increase the global warming temperature. Therefore, future exploitation of fossil fuels will obligate carbon management to achieve power generation without an increase in greenhouse gases. Interestingly, in trying to reduce fossil fuel consumption and reduce costs, efforts are underway to greatly increase energy efficiency and use energy in a smarter way. Given the absence of credible alternative sources, the use
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