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Numerical Simulations of the Influence of Inert Gases (N(2)/CO(2)) on Combustion Characteristics of Laminar-Premixed Biosyngas Flame
[Image: see text] In this work, the influence of different N(2)/CO(2) contents (up to 60% in fuel volume) on combustion features of laminar-premixed CO/CH(4)/H(2) flame with various equivalence ratios (0.6–1.6) at standard conditions was numerically calculated using ANSYS CHEMKIN-PRO with the GRI-Me...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Chemical Society
2021
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8190912/ https://www.ncbi.nlm.nih.gov/pubmed/34124482 http://dx.doi.org/10.1021/acsomega.1c01729 |
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author | Sun, Huilai Li, Ruichuan Huang, Mingming Li, Zhi Xu, Jikang |
author_facet | Sun, Huilai Li, Ruichuan Huang, Mingming Li, Zhi Xu, Jikang |
author_sort | Sun, Huilai |
collection | PubMed |
description | [Image: see text] In this work, the influence of different N(2)/CO(2) contents (up to 60% in fuel volume) on combustion features of laminar-premixed CO/CH(4)/H(2) flame with various equivalence ratios (0.6–1.6) at standard conditions was numerically calculated using ANSYS CHEMKIN-PRO with the GRI-Mech 3.0 mechanism. The mole fraction profiles of the major species and the rate of production of dominant elementary reactions in the flames of CO/CH(4)/H(2)/N(2)/CO(2)/air were obtained. The effect of inert gas addition on the formation of NO(X), H, O, and OH was analyzed, and the sensitivity coefficient of the active radical mole fraction was obtained. The results suggest that the addition of inert gas of the fuel mixture with various equivalence ratios reduces laminar burning velocity and adiabatic temperature, which have always had a good positive correlation and the maximum peak point shifted left. CO(2) has obvious inhibitory effect on the formation of NO by reducing the amount of O radicals and obstructing the conduct of the reaction of NNH + O ⇔ NH + NO, but it promotes the formation of NO(2) mainly through the reaction HO(2) + NO ⇔ NO(2) + OH. The reactions H + O(2) + H(2)O ⇔ HO(2) + H(2)O, H + O(2) ⇔ O + OH, and OH + CO ⇔ H + CO(2) are three very important reactions for the molar fractions of H, O, and OH that decrease significantly with an increase of inert gas concentration. |
format | Online Article Text |
id | pubmed-8190912 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | American Chemical Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-81909122021-06-11 Numerical Simulations of the Influence of Inert Gases (N(2)/CO(2)) on Combustion Characteristics of Laminar-Premixed Biosyngas Flame Sun, Huilai Li, Ruichuan Huang, Mingming Li, Zhi Xu, Jikang ACS Omega [Image: see text] In this work, the influence of different N(2)/CO(2) contents (up to 60% in fuel volume) on combustion features of laminar-premixed CO/CH(4)/H(2) flame with various equivalence ratios (0.6–1.6) at standard conditions was numerically calculated using ANSYS CHEMKIN-PRO with the GRI-Mech 3.0 mechanism. The mole fraction profiles of the major species and the rate of production of dominant elementary reactions in the flames of CO/CH(4)/H(2)/N(2)/CO(2)/air were obtained. The effect of inert gas addition on the formation of NO(X), H, O, and OH was analyzed, and the sensitivity coefficient of the active radical mole fraction was obtained. The results suggest that the addition of inert gas of the fuel mixture with various equivalence ratios reduces laminar burning velocity and adiabatic temperature, which have always had a good positive correlation and the maximum peak point shifted left. CO(2) has obvious inhibitory effect on the formation of NO by reducing the amount of O radicals and obstructing the conduct of the reaction of NNH + O ⇔ NH + NO, but it promotes the formation of NO(2) mainly through the reaction HO(2) + NO ⇔ NO(2) + OH. The reactions H + O(2) + H(2)O ⇔ HO(2) + H(2)O, H + O(2) ⇔ O + OH, and OH + CO ⇔ H + CO(2) are three very important reactions for the molar fractions of H, O, and OH that decrease significantly with an increase of inert gas concentration. American Chemical Society 2021-05-25 /pmc/articles/PMC8190912/ /pubmed/34124482 http://dx.doi.org/10.1021/acsomega.1c01729 Text en © 2021 The Authors. Published by American Chemical Society Permits non-commercial access and re-use, provided that author attribution and integrity are maintained; but does not permit creation of adaptations or other derivative works (https://creativecommons.org/licenses/by-nc-nd/4.0/). |
spellingShingle | Sun, Huilai Li, Ruichuan Huang, Mingming Li, Zhi Xu, Jikang Numerical Simulations of the Influence of Inert Gases (N(2)/CO(2)) on Combustion Characteristics of Laminar-Premixed Biosyngas Flame |
title | Numerical Simulations of the Influence of Inert Gases
(N(2)/CO(2)) on Combustion Characteristics of Laminar-Premixed
Biosyngas Flame |
title_full | Numerical Simulations of the Influence of Inert Gases
(N(2)/CO(2)) on Combustion Characteristics of Laminar-Premixed
Biosyngas Flame |
title_fullStr | Numerical Simulations of the Influence of Inert Gases
(N(2)/CO(2)) on Combustion Characteristics of Laminar-Premixed
Biosyngas Flame |
title_full_unstemmed | Numerical Simulations of the Influence of Inert Gases
(N(2)/CO(2)) on Combustion Characteristics of Laminar-Premixed
Biosyngas Flame |
title_short | Numerical Simulations of the Influence of Inert Gases
(N(2)/CO(2)) on Combustion Characteristics of Laminar-Premixed
Biosyngas Flame |
title_sort | numerical simulations of the influence of inert gases
(n(2)/co(2)) on combustion characteristics of laminar-premixed
biosyngas flame |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8190912/ https://www.ncbi.nlm.nih.gov/pubmed/34124482 http://dx.doi.org/10.1021/acsomega.1c01729 |
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