Publication
Title
Effect of gas composition on temperature and CO₂ conversion in a gliding arc plasmatron reactor : insights for post‐plasma catalysis from experiments and computation
Author
Abstract
Plasma‐based CO2 conversion has attracted increasing interest. However, to understand the impact of plasma operation on post‐plasma processes, we studied the effect of adding N2, N2/CH4 and N2/CH4/H2O to a CO2 gliding arc plasmatron (GAP) to obtain valuable insights into their impact on exhaust stream composition and temperature, which will serve as feed gas and heat for post‐plasma catalysis  (PPC). Adding N2 improves the CO2 conversion from 4% to 13%, and CH4 addition further promotes it to 44%, and even to 61% at lower gas flow rate (6 L/min), allowing a higher yield of CO and hydrogen for PPC. The addition of H2O, however, reduces the CO2 conversion from 55% to 22%, but it also lowers the  energy cost, from 5.8 to 3 kJ/L. Regarding the temperature at 4.9 cm post‐plasma, N2 addition increases the temperature, while the CO2/CH4 ratio has no significant effect on temperature. We also calculated the temperature distribution with computational fluid dynamics simulations. The obtained temperature profiles (both experimental and calculated) show a decreasing trend with distance to the exhaust and provide insights in where to position a PPC bed.
Language
English
Source (journal)
Chemsuschem. - Weinheim
Publication
Weinheim : 2024
ISSN
1864-5631
DOI
10.1002/CSSC.202400169
Volume/pages
(2024) , p. 1-11
Article Reference
e202400169
ISI
001200297300001
Pubmed ID
38484131
Full text (Publisher's DOI)
Full text (open access)
The author-created version that incorporates referee comments and is the accepted for publication version Available from 14.09.2024
Full text (publisher's version - intranet only)
UAntwerpen
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Research group
Publication type
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Affiliation
Publications with a UAntwerp address
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Creation 11.04.2024
Last edited 08.05.2024
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