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CFD modelling of CO2 enhanced gasification of coal in a pressurized circulating fluidized bed reactor

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  • Klimanek, Adam
  • Bigda, Joanna

Abstract

Two CFD models of CO2-enhanced coal gasification in pressurized circulating fluidized bed reactor were developed and applied to simulate the process and predict syngas composition at the reactor outlet. The models were developed using commercial codes ANSYS Fluent and CPFD Barracuda. The models allowed to predict the outlet syngas composition and give insight into the processes occurring in the reactor. Results of the analyses were compared with experimental data obtained from a small scale test facility. The predicted syngas compositions agreed well with the experimental data, however the local gas composition in some instances were different. The predicted temperature distribution in Fluent agreed well with the experimental data. The examined cases confirmed that addition of CO2 to the gasifying agent in a pressurized reactor can increase the CO yield per unit of feedstock and reduce the oxygen demand.

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  • Klimanek, Adam & Bigda, Joanna, 2018. "CFD modelling of CO2 enhanced gasification of coal in a pressurized circulating fluidized bed reactor," Energy, Elsevier, vol. 160(C), pages 710-719.
    • Handle: RePEc:eee:energy:v:160:y:2018:i:c:p:710-719
    DOI: 10.1016/j.energy.2018.07.046
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    2. Shen, Ye & Li, Xian & Yao, Zhiyi & Cui, Xiaoqiang & Wang, Chi-Hwa, 2019. "CO2 gasification of woody biomass: Experimental study from a lab-scale reactor to a small-scale autothermal gasifier," Energy, Elsevier, vol. 170(C), pages 497-506.
    3. Mahapatro, Abinash & Mahanta, Pinakeswar, 2020. "Gasification studies of low-grade Indian coal and biomass in a lab-scale pressurized circulating fluidized bed," Renewable Energy, Elsevier, vol. 150(C), pages 1151-1159.
    4. Yang, Shiliang & Wang, Hua & Wei, Yonggang & Hu, Jianhang & Chew, Jia Wei, 2019. "Eulerian-Lagrangian simulation of air-steam biomass gasification in a three-dimensional bubbling fluidized gasifier," Energy, Elsevier, vol. 181(C), pages 1075-1093.
    5. Wan, Zhanghao & Yang, Shiliang & Wei, Yonggang & Hu, Jianhang & Wang, Hua, 2020. "CFD modeling of the flow dynamics and gasification in the combustor and gasifier of a dual fluidized bed pilot plant," Energy, Elsevier, vol. 198(C).
    6. Du, Wang & Ma, Liping & Pan, Qinghuan & Dai, Quxiu & Zhang, Mi & Yin, Xia & Xiong, Xiong & Zhang, Wei, 2023. "Full-loop CFD simulation of lignite Chemical Looping Gasification with phosphogypsum as oxygen carrier using a circulating fluidized bed," Energy, Elsevier, vol. 262(PA).
    7. Du, Shaohua & Yuan, Shouzheng & Zhou, Qiang, 2021. "Numerical investigation of co-gasification of coal and PET in a fluidized bed reactor," Renewable Energy, Elsevier, vol. 172(C), pages 424-439.
    8. M. Shahabuddin & Sankar Bhattacharya, 2021. "Co-Gasification Characteristics of Coal and Biomass Using CO 2 Reactant under Thermodynamic Equilibrium Modelling," Energies, MDPI, vol. 14(21), pages 1-12, November.

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