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Fundamentals of Breakdown & Plasma Generation

11:00 am – 12:30 pm, Thursday October 16 Session IR2 COEX, Room E6
Chair:
Gunsu Yun, Pohang Univ of Sci & Tech
Topics:
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Kinetic modelling of CO2 conversion in gliding arc discharges: combining experiment and simulation

11:45 am – 12:00 pm
Presenter: Yang Liu (Huazhong University of Science and Technology; Instituto de Plasmas e Fusão Nuclear, Instituto Superior Técnico, Universidade de Lisboa; The Hong Kong Polytechnic University)
Authors: Tiago Dias (University of Michigan), Tiago Silva (Instituto de Plasmas e Fusão Nuclear, Instituto Superior Técnico, Universidade de Lisboa), Pedro Viegas (Instituto Superior Técnico - Universidade de Lisboa), Rui Martins (Maastricht University), Xiangen Zhao (Department of Building Environment and Energy Engineering, The Hong Kong Polytechnic University, Hong Kong, China), Yifei Zhu (School of Mechanical Engineering, Xi'an Jiaotong University), Yaping Du (Department of Building Environment and Energy Engineering, The Hong Kong Polytechnic University, Hong Kong, China), Junjia He (Huazhong University of Science and Technology), Vasco Guerra (Instituto de Plasmas e Fusão Nuclear, Instituto Superior Técnico, Universidade de Lisboa)
Collaboration: N-PRiME/IPFN; PlasMars

Gliding arc discharge (GAD), involving both equilibrium and non-equilibrium plasma stages, is regarded as a promising way to convert CO2 in industry, owing to its high energy efficiency and large density of reactive particles. It is a long-standing challenge to characterise the complete evolution of various particles in GAD at different stages by a kinetic model. In this work, we propose a novel kinetic model by separating three stages, equilibrium, non-equilibrium, and post-discharge, in which experimental data on the plasma's macroscopic characteristics are used as input. The model is validated by comparing the final CO₂ conversion and vibrational temperatures. The results indicate that thermolysis of vibrational states offers a very high potential to split CO2, but the subsequent recombination reactions, especially CO + O2 → CO2 + O, restrict the final CO2 conversion performance.

Funding acknowledgement

IPFN activities were funded by FCT (Fundação para a Ciência e a Tecnologia) under projects UIDB/50010/2020 (https://doi.org/10.54499/UIDB/50010/2020), UIDP/50010/2020 (https://doi.org/10.54499/UIDP/50010/2020), LA/P/0061/2020 (https://doi.org/10.54499/LA/P/0061/2020), PTDC/FIS-PLA/1616/2021(PARADiSE) (https://doi.org/10.54499/PTDC/FIS-PLA/1616/2021) and grant PD/BD/150414/2019 (PD-F APPLAUSE). PV acknowledges support by project CEECIND/00025/2022 of FCT. In addition, this work was funded by the Environment and Conservation Fund of Hong Kong Governmen (Environmental Research, Technology Demonstration and Conference Projects; Project No. 26/2022)

PRESENTATIONS (6)