CO<sub>2</sub> conversion in a gliding arc plasma: Performance improvement based on chemical reaction modeling



Sun, SR, Wang, HX, Mei, DH ORCID: 0000-0002-3024-3551, Tu, X ORCID: 0000-0002-6376-0897 and Bogaerts, A
(2017) CO<sub>2</sub> conversion in a gliding arc plasma: Performance improvement based on chemical reaction modeling. JOURNAL OF CO2 UTILIZATION, 17. pp. 220-234.

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Abstract

CO2 conversion into value-added chemicals is gaining increasing interest in recent years, and a gliding arc plasma has great potential for this purpose, because of its high energy efficiency. In this study, a chemical reaction kinetics model is presented to study the CO2 splitting in a gliding arc discharge. The calculated conversion and energy efficiency are in good agreement with experimental data in a range of different operating conditions. Therefore, this reaction kinetics model can be used to elucidate the dominant chemical reactions contributing to CO2 destruction and formation. Based on this reaction pathway analysis, the restricting factors for CO2 conversion are figured out, i.e., the reverse reactions and the small treated gas fraction. This allows us to propose some solutions in order to improve the CO2 conversion, such as decreasing the gas temperature, by using a high frequency discharge, or increasing the power density, by using a micro-scale gliding arc reactor, or by removing the reverse reactions, which could be realized in practice by adding possible scavengers for O atoms, such as CH4. Finally, we compare our results with other types of plasmas in terms of conversion and energy efficiency, and the results illustrate that gliding arc discharges are indeed quite promising for CO2 conversion, certainly when keeping in mind the possible solutions for further performance improvement.

Item Type: Article
Additional Information: publisher: Elsevier articletitle: CO2 conversion in a gliding arc plasma: Performance improvement based on chemical reaction modeling journaltitle: Journal of CO2 Utilization articlelink: http://dx.doi.org/10.1016/j.jcou.2016.12.009 content_type: article copyright: © 2016 Elsevier Ltd. All rights reserved.
Uncontrolled Keywords: CO2 conversion, Gliding arc, Energy efficiency
Depositing User: Symplectic Admin
Date Deposited: 13 Jan 2017 08:42
Last Modified: 12 Oct 2023 08:56
DOI: 10.1016/j.jcou.2016.12.009
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3005178