The effects of hydrogen addition on the chemical kinetics of hydrogen-hydrocarbon flames: A computational study
In this paper, the effects of hydrogen addition on the chemical kinetics of hydrogen–hydrocarbon flames were investigated numerically. Profiles of maximum OH, O and H radical mole fractions, flame temperature and emission levels of hydrogen-methane, hydrogen-ethane and hydrogen-propane flames were c...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2020-07-01
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| Series: | South African Journal of Chemical Engineering |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1026918520300093 |
| _version_ | 1818054920372224000 |
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| author | Zine labidine Messaoudani Mahar Diana Hamid Che Rosmani Che Hassan Yajue WU |
| author_facet | Zine labidine Messaoudani Mahar Diana Hamid Che Rosmani Che Hassan Yajue WU |
| author_sort | Zine labidine Messaoudani |
| collection | DOAJ |
| description | In this paper, the effects of hydrogen addition on the chemical kinetics of hydrogen–hydrocarbon flames were investigated numerically. Profiles of maximum OH, O and H radical mole fractions, flame temperature and emission levels of hydrogen-methane, hydrogen-ethane and hydrogen-propane flames were computational obtained using Kintecus solver code. The simulations were performed by incorporating Konnov's hydrocarbon combustion mechanism at the stoichiometric condition and the constant pressure of 1 atm. It was found that a small hydrogen increase in the flame mixture can modestly affects the temperature and mole fraction profiles, however, the significant increase can be observed upon 40%, 60% and 80% of hydrogen addition for hydrogen-methane, hydrogen-ethane and hydrogen-propane flames respectively can lead to decrement of CO and CO2 emissions but increment in the combustion kinetics and the adiabatic flame temperature plus an extension of the flame stability limits. A comparison of the flames free radical profiles and the laminar burning velocity of the flames showed a strong correlation. |
| first_indexed | 2024-12-10T12:04:43Z |
| format | Article |
| id | doaj.art-650364037c7646ef810d88fc42c72475 |
| institution | Directory Open Access Journal |
| issn | 1026-9185 |
| language | English |
| last_indexed | 2024-12-10T12:04:43Z |
| publishDate | 2020-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | South African Journal of Chemical Engineering |
| spelling | doaj.art-650364037c7646ef810d88fc42c724752022-12-22T01:49:30ZengElsevierSouth African Journal of Chemical Engineering1026-91852020-07-0133128The effects of hydrogen addition on the chemical kinetics of hydrogen-hydrocarbon flames: A computational studyZine labidine Messaoudani0Mahar Diana Hamid1Che Rosmani Che Hassan2Yajue WU3Department of Chemical Engineering,Faculty of Engineering, University Malaya, Kuala lumpur 50603, Malaysia; Corresponding authors.Department of Chemical Engineering,Faculty of Engineering, University Malaya, Kuala lumpur 50603, Malaysia; Corresponding authors.Department of Chemical Engineering,Faculty of Engineering, University Malaya, Kuala lumpur 50603, MalaysiaDepartment of Chemical and Biological Engineering, Sheffield University, United kingdomIn this paper, the effects of hydrogen addition on the chemical kinetics of hydrogen–hydrocarbon flames were investigated numerically. Profiles of maximum OH, O and H radical mole fractions, flame temperature and emission levels of hydrogen-methane, hydrogen-ethane and hydrogen-propane flames were computational obtained using Kintecus solver code. The simulations were performed by incorporating Konnov's hydrocarbon combustion mechanism at the stoichiometric condition and the constant pressure of 1 atm. It was found that a small hydrogen increase in the flame mixture can modestly affects the temperature and mole fraction profiles, however, the significant increase can be observed upon 40%, 60% and 80% of hydrogen addition for hydrogen-methane, hydrogen-ethane and hydrogen-propane flames respectively can lead to decrement of CO and CO2 emissions but increment in the combustion kinetics and the adiabatic flame temperature plus an extension of the flame stability limits. A comparison of the flames free radical profiles and the laminar burning velocity of the flames showed a strong correlation.http://www.sciencedirect.com/science/article/pii/S1026918520300093HydrogenHydrogen-hydrocarbon jet flamesStability limitsTurbulent diffusion flamesChemical kinetics |
| spellingShingle | Zine labidine Messaoudani Mahar Diana Hamid Che Rosmani Che Hassan Yajue WU The effects of hydrogen addition on the chemical kinetics of hydrogen-hydrocarbon flames: A computational study South African Journal of Chemical Engineering Hydrogen Hydrogen-hydrocarbon jet flames Stability limits Turbulent diffusion flames Chemical kinetics |
| title | The effects of hydrogen addition on the chemical kinetics of hydrogen-hydrocarbon flames: A computational study |
| title_full | The effects of hydrogen addition on the chemical kinetics of hydrogen-hydrocarbon flames: A computational study |
| title_fullStr | The effects of hydrogen addition on the chemical kinetics of hydrogen-hydrocarbon flames: A computational study |
| title_full_unstemmed | The effects of hydrogen addition on the chemical kinetics of hydrogen-hydrocarbon flames: A computational study |
| title_short | The effects of hydrogen addition on the chemical kinetics of hydrogen-hydrocarbon flames: A computational study |
| title_sort | effects of hydrogen addition on the chemical kinetics of hydrogen hydrocarbon flames a computational study |
| topic | Hydrogen Hydrogen-hydrocarbon jet flames Stability limits Turbulent diffusion flames Chemical kinetics |
| url | http://www.sciencedirect.com/science/article/pii/S1026918520300093 |
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