Simultaneous Quantitative Detection of HCN and C2H2 in Combustion Environment Using TDLAS

Emission of nitrogen oxides (NOx) and soot particles during the combustion of biomass fuels and municipal solid waste is a major environmental issue. Hydrogen cyanide (HCN) and acetylene (C2H2) are important precursors of NO<sub...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Wubin Weng, Marcus Aldén, Zhongshan Li
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	hydrogen cyanide acetylene tunable diode laser absorption spectroscopy combustion/gasification hot water interference biomass/waste Chemical technology TP1-1185 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/2ffcc07416f1495eaf73a2ab0e344f0f
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:2ffcc07416f1495eaf73a2ab0e344f0f
record_format	dspace
spelling	oai:doaj.org-article:2ffcc07416f1495eaf73a2ab0e344f0f2021-11-25T18:51:38ZSimultaneous Quantitative Detection of HCN and C<sub>2</sub>H<sub>2</sub> in Combustion Environment Using TDLAS10.3390/pr91120332227-9717https://doaj.org/article/2ffcc07416f1495eaf73a2ab0e344f0f2021-11-01T00:00:00Zhttps://www.mdpi.com/2227-9717/9/11/2033https://doaj.org/toc/2227-9717Emission of nitrogen oxides (NO<sub>x</sub>) and soot particles during the combustion of biomass fuels and municipal solid waste is a major environmental issue. Hydrogen cyanide (HCN) and acetylene (C<sub>2</sub>H<sub>2</sub>) are important precursors of NO<sub>x</sub> and soot particles, respectively. In the current work, infrared tunable diode laser absorption spectroscopy (IR-TDLAS), as a non-intrusive in situ technique, was applied to quantitatively measure HCN and C<sub>2</sub>H<sub>2</sub> in a combustion environment. The P(11e) line of the first overtone vibrational band <i>v</i><sub>1</sub> of HCN at 6484.78 cm<sup>−1</sup> and the P(27e) line of the <i>v</i><sub>1</sub> + <i>v</i><sub>3</sub> combination band of C<sub>2</sub>H<sub>2</sub> at 6484.03 cm<sup>−1</sup> were selected. However, the infrared absorption of the ubiquitous water vapor in the combustion environment brings great uncertainty to the measurement. To obtain accurate temperature-dependent water spectra between 6483.8 and 6485.8 cm<sup>−1</sup>, a homogenous hot gas environment with controllable temperatures varying from 1100 to 1950 K provided by a laminar flame was employed to perform systematic IR-TDLAS measurements. By fitting the obtained water spectra, water interference to the HCN and C<sub>2</sub>H<sub>2</sub> measurement was sufficiently mitigated and the concentrations of HCN and C<sub>2</sub>H<sub>2</sub> were obtained. The technique was applied to simultaneously measure the temporally resolved release of HCN and C<sub>2</sub>H<sub>2</sub> over burning nylon 66 strips in a hot oxidizing environment of 1790 K.Wubin WengMarcus AldénZhongshan LiMDPI AGarticlehydrogen cyanideacetylenetunable diode laser absorption spectroscopycombustion/gasificationhot water interferencebiomass/wasteChemical technologyTP1-1185ChemistryQD1-999ENProcesses, Vol 9, Iss 2033, p 2033 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	hydrogen cyanide acetylene tunable diode laser absorption spectroscopy combustion/gasification hot water interference biomass/waste Chemical technology TP1-1185 Chemistry QD1-999
spellingShingle	hydrogen cyanide acetylene tunable diode laser absorption spectroscopy combustion/gasification hot water interference biomass/waste Chemical technology TP1-1185 Chemistry QD1-999 Wubin Weng Marcus Aldén Zhongshan Li Simultaneous Quantitative Detection of HCN and C<sub>2</sub>H<sub>2</sub> in Combustion Environment Using TDLAS
description	Emission of nitrogen oxides (NO<sub>x</sub>) and soot particles during the combustion of biomass fuels and municipal solid waste is a major environmental issue. Hydrogen cyanide (HCN) and acetylene (C<sub>2</sub>H<sub>2</sub>) are important precursors of NO<sub>x</sub> and soot particles, respectively. In the current work, infrared tunable diode laser absorption spectroscopy (IR-TDLAS), as a non-intrusive in situ technique, was applied to quantitatively measure HCN and C<sub>2</sub>H<sub>2</sub> in a combustion environment. The P(11e) line of the first overtone vibrational band <i>v</i><sub>1</sub> of HCN at 6484.78 cm<sup>−1</sup> and the P(27e) line of the <i>v</i><sub>1</sub> + <i>v</i><sub>3</sub> combination band of C<sub>2</sub>H<sub>2</sub> at 6484.03 cm<sup>−1</sup> were selected. However, the infrared absorption of the ubiquitous water vapor in the combustion environment brings great uncertainty to the measurement. To obtain accurate temperature-dependent water spectra between 6483.8 and 6485.8 cm<sup>−1</sup>, a homogenous hot gas environment with controllable temperatures varying from 1100 to 1950 K provided by a laminar flame was employed to perform systematic IR-TDLAS measurements. By fitting the obtained water spectra, water interference to the HCN and C<sub>2</sub>H<sub>2</sub> measurement was sufficiently mitigated and the concentrations of HCN and C<sub>2</sub>H<sub>2</sub> were obtained. The technique was applied to simultaneously measure the temporally resolved release of HCN and C<sub>2</sub>H<sub>2</sub> over burning nylon 66 strips in a hot oxidizing environment of 1790 K.
format	article
author	Wubin Weng Marcus Aldén Zhongshan Li
author_facet	Wubin Weng Marcus Aldén Zhongshan Li
author_sort	Wubin Weng
title	Simultaneous Quantitative Detection of HCN and C<sub>2</sub>H<sub>2</sub> in Combustion Environment Using TDLAS
title_short	Simultaneous Quantitative Detection of HCN and C<sub>2</sub>H<sub>2</sub> in Combustion Environment Using TDLAS
title_full	Simultaneous Quantitative Detection of HCN and C<sub>2</sub>H<sub>2</sub> in Combustion Environment Using TDLAS
title_fullStr	Simultaneous Quantitative Detection of HCN and C<sub>2</sub>H<sub>2</sub> in Combustion Environment Using TDLAS
title_full_unstemmed	Simultaneous Quantitative Detection of HCN and C<sub>2</sub>H<sub>2</sub> in Combustion Environment Using TDLAS
title_sort	simultaneous quantitative detection of hcn and c<sub>2</sub>h<sub>2</sub> in combustion environment using tdlas
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/2ffcc07416f1495eaf73a2ab0e344f0f
work_keys_str_mv	AT wubinweng simultaneousquantitativedetectionofhcnandcsub2subhsub2subincombustionenvironmentusingtdlas AT marcusalden simultaneousquantitativedetectionofhcnandcsub2subhsub2subincombustionenvironmentusingtdlas AT zhongshanli simultaneousquantitativedetectionofhcnandcsub2subhsub2subincombustionenvironmentusingtdlas
_version_	1718410639596060672

Simultaneous Quantitative Detection of HCN and C<sub>2</sub>H<sub>2</sub> in Combustion Environment Using TDLAS

Ejemplares similares