Investigation of Hydrogen Content and Dilution Effect on Syngas/Air Premixed Turbulent Flame Using OH Planar Laser-Induced Fluorescence

Syngas produced by gasification, which contains a high hydrogen content, has significant potential. The variation in the hydrogen content and dilution combustion are effective means to improve the steady combustion of syngas and reduce NO<sub>x</sub> emissions. OH planar laser-induced fl...

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Autores principales:	Li Yang, Wubin Weng, Yanqun Zhu, Yong He, Zhihua Wang, Zhongshan Li
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	dilution hydrogen content turbulent flame premixed OH planar laser-induced fluorescence Chemical technology TP1-1185 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/1262c6ac5d374c4086c3808e2ac90fa4
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id	oai:doaj.org-article:1262c6ac5d374c4086c3808e2ac90fa4
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spelling	oai:doaj.org-article:1262c6ac5d374c4086c3808e2ac90fa42021-11-25T18:50:10ZInvestigation of Hydrogen Content and Dilution Effect on Syngas/Air Premixed Turbulent Flame Using OH Planar Laser-Induced Fluorescence10.3390/pr91118942227-9717https://doaj.org/article/1262c6ac5d374c4086c3808e2ac90fa42021-10-01T00:00:00Zhttps://www.mdpi.com/2227-9717/9/11/1894https://doaj.org/toc/2227-9717Syngas produced by gasification, which contains a high hydrogen content, has significant potential. The variation in the hydrogen content and dilution combustion are effective means to improve the steady combustion of syngas and reduce NO<sub>x</sub> emissions. OH planar laser-induced fluorescence technology (OH-PLIF) was applied in the present investigation of the turbulence of a premixed flame of syngas with varied compositions of H<sub>2</sub>/CO. The flame front structure and turbulent flame velocities of syngas with varied compositions and turbulent intensities were analyzed and calculated. Results showed that the trend in the turbulent flame speed with different hydrogen proportions and dilutions was similar to that of the laminar flame speed of the corresponding syngas. A higher hydrogen proportion induced a higher turbulent flame speed, higher OH concentration, and a smaller flame. Dilution had the opposite effect. Increasing the Reynolds number also increased the turbulent flame speed and OH concentration. In addition, the effect of the turbulence on the combustion of syngas was independent of the composition of syngas after the analysis of the ratio between the turbulent flame speed and the corresponding laminar flame speed, for the turbulent flames under low turbulent intensity. These research results provide a theoretical basis for the practical application of syngas with a complex composition in gas turbine power generation.Li YangWubin WengYanqun ZhuYong HeZhihua WangZhongshan LiMDPI AGarticledilutionhydrogen contentturbulent flamepremixedOHplanar laser-induced fluorescenceChemical technologyTP1-1185ChemistryQD1-999ENProcesses, Vol 9, Iss 1894, p 1894 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	dilution hydrogen content turbulent flame premixed OH planar laser-induced fluorescence Chemical technology TP1-1185 Chemistry QD1-999
spellingShingle	dilution hydrogen content turbulent flame premixed OH planar laser-induced fluorescence Chemical technology TP1-1185 Chemistry QD1-999 Li Yang Wubin Weng Yanqun Zhu Yong He Zhihua Wang Zhongshan Li Investigation of Hydrogen Content and Dilution Effect on Syngas/Air Premixed Turbulent Flame Using OH Planar Laser-Induced Fluorescence
description	Syngas produced by gasification, which contains a high hydrogen content, has significant potential. The variation in the hydrogen content and dilution combustion are effective means to improve the steady combustion of syngas and reduce NO<sub>x</sub> emissions. OH planar laser-induced fluorescence technology (OH-PLIF) was applied in the present investigation of the turbulence of a premixed flame of syngas with varied compositions of H<sub>2</sub>/CO. The flame front structure and turbulent flame velocities of syngas with varied compositions and turbulent intensities were analyzed and calculated. Results showed that the trend in the turbulent flame speed with different hydrogen proportions and dilutions was similar to that of the laminar flame speed of the corresponding syngas. A higher hydrogen proportion induced a higher turbulent flame speed, higher OH concentration, and a smaller flame. Dilution had the opposite effect. Increasing the Reynolds number also increased the turbulent flame speed and OH concentration. In addition, the effect of the turbulence on the combustion of syngas was independent of the composition of syngas after the analysis of the ratio between the turbulent flame speed and the corresponding laminar flame speed, for the turbulent flames under low turbulent intensity. These research results provide a theoretical basis for the practical application of syngas with a complex composition in gas turbine power generation.
format	article
author	Li Yang Wubin Weng Yanqun Zhu Yong He Zhihua Wang Zhongshan Li
author_facet	Li Yang Wubin Weng Yanqun Zhu Yong He Zhihua Wang Zhongshan Li
author_sort	Li Yang
title	Investigation of Hydrogen Content and Dilution Effect on Syngas/Air Premixed Turbulent Flame Using OH Planar Laser-Induced Fluorescence
title_short	Investigation of Hydrogen Content and Dilution Effect on Syngas/Air Premixed Turbulent Flame Using OH Planar Laser-Induced Fluorescence
title_full	Investigation of Hydrogen Content and Dilution Effect on Syngas/Air Premixed Turbulent Flame Using OH Planar Laser-Induced Fluorescence
title_fullStr	Investigation of Hydrogen Content and Dilution Effect on Syngas/Air Premixed Turbulent Flame Using OH Planar Laser-Induced Fluorescence
title_full_unstemmed	Investigation of Hydrogen Content and Dilution Effect on Syngas/Air Premixed Turbulent Flame Using OH Planar Laser-Induced Fluorescence
title_sort	investigation of hydrogen content and dilution effect on syngas/air premixed turbulent flame using oh planar laser-induced fluorescence
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/1262c6ac5d374c4086c3808e2ac90fa4
work_keys_str_mv	AT liyang investigationofhydrogencontentanddilutioneffectonsyngasairpremixedturbulentflameusingohplanarlaserinducedfluorescence AT wubinweng investigationofhydrogencontentanddilutioneffectonsyngasairpremixedturbulentflameusingohplanarlaserinducedfluorescence AT yanqunzhu investigationofhydrogencontentanddilutioneffectonsyngasairpremixedturbulentflameusingohplanarlaserinducedfluorescence AT yonghe investigationofhydrogencontentanddilutioneffectonsyngasairpremixedturbulentflameusingohplanarlaserinducedfluorescence AT zhihuawang investigationofhydrogencontentanddilutioneffectonsyngasairpremixedturbulentflameusingohplanarlaserinducedfluorescence AT zhongshanli investigationofhydrogencontentanddilutioneffectonsyngasairpremixedturbulentflameusingohplanarlaserinducedfluorescence
_version_	1718410632342011904

Investigation of Hydrogen Content and Dilution Effect on Syngas/Air Premixed Turbulent Flame Using OH Planar Laser-Induced Fluorescence

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