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Detection of HCl in a Premixed CH4/O-2/Ar Flame Seeded with CHCl3 Using Mid-IR Polarization Spectroscopy

Li, Zhongshan LU ; Sun, Zhiwei LU ; Li, Bo LU and Aldén, Marcus LU (2008) 9th Asia-Pacific International Symposium on Combustion and Energy Utilization In Proceedings of the Ninth Asia-Pacific International Symposium on Combustion and Energy Utilization p.222-226
Abstract
Mid-infrared polarization spectroscopy (IRPS) was applied to detect HCl in flames. For the first time, sensitive and nonin trusive HCl detection with a manner of high spatial- and temporal-resolution in harsh reactive gas flow has been demonstrated in this work. In an atmospheric pressure premixed CH4/O-2/Ar flat flame, trace level HCl was prepared by seeding small amount chloroform through the Ar flow. IRPS HCl detection in the burnt region of the equivalent flame was pert formed by probing the fundamental ro-vibration transitions with a 3.2 mu m tunable pulsed laser produced through difference frequency mixing of a 1064 nm and a tunable 800 nm laser beams from a injection seeded Nd:YAG and a dye laser pumped by the second harmonic of the... (More)
Mid-infrared polarization spectroscopy (IRPS) was applied to detect HCl in flames. For the first time, sensitive and nonin trusive HCl detection with a manner of high spatial- and temporal-resolution in harsh reactive gas flow has been demonstrated in this work. In an atmospheric pressure premixed CH4/O-2/Ar flat flame, trace level HCl was prepared by seeding small amount chloroform through the Ar flow. IRPS HCl detection in the burnt region of the equivalent flame was pert formed by probing the fundamental ro-vibration transitions with a 3.2 mu m tunable pulsed laser produced through difference frequency mixing of a 1064 nm and a tunable 800 nm laser beams from a injection seeded Nd:YAG and a dye laser pumped by the second harmonic of the same Nd:YAG laser, respectively. High resolution IRPS excitation scans were recorded in the flames both with and without chloroform seeding. All the HCl rotation lines in the chosen spectral range were recognized among the dense lines from hot water, which was the majority species in the burnt region of the flat flame. The saturation behavior of the HCl IRPS was investigated by study the variation of the signal intensity with pumping laser pulse energy and the saturation pulse energy was found to be 250 mu J. in the setup. The dependence of the IRPS signal on the HCl number density was also investigated and a detection limit of less than 100 ppm in the atmospheric pressure flame was estimated based on the measurements. The potential interference from water lines related to the IRPS application was also investigated. (Less)
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author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
mid-infrared Polarization Spectroscopy, diagnostics, laser combustion, HCl detection
in
Proceedings of the Ninth Asia-Pacific International Symposium on Combustion and Energy Utilization
pages
222 - 226
publisher
World Publishing Corporation
conference name
9th Asia-Pacific International Symposium on Combustion and Energy Utilization
external identifiers
  • WOS:000263828800034
ISBN
978-7-5062-9284-9
language
English
LU publication?
yes
id
af3777c8-9bfc-4bef-8a30-805ce75c0dd2 (old id 1375186)
date added to LUP
2009-04-17 09:28:17
date last changed
2016-04-16 10:22:29
@inproceedings{af3777c8-9bfc-4bef-8a30-805ce75c0dd2,
  abstract     = {Mid-infrared polarization spectroscopy (IRPS) was applied to detect HCl in flames. For the first time, sensitive and nonin trusive HCl detection with a manner of high spatial- and temporal-resolution in harsh reactive gas flow has been demonstrated in this work. In an atmospheric pressure premixed CH4/O-2/Ar flat flame, trace level HCl was prepared by seeding small amount chloroform through the Ar flow. IRPS HCl detection in the burnt region of the equivalent flame was pert formed by probing the fundamental ro-vibration transitions with a 3.2 mu m tunable pulsed laser produced through difference frequency mixing of a 1064 nm and a tunable 800 nm laser beams from a injection seeded Nd:YAG and a dye laser pumped by the second harmonic of the same Nd:YAG laser, respectively. High resolution IRPS excitation scans were recorded in the flames both with and without chloroform seeding. All the HCl rotation lines in the chosen spectral range were recognized among the dense lines from hot water, which was the majority species in the burnt region of the flat flame. The saturation behavior of the HCl IRPS was investigated by study the variation of the signal intensity with pumping laser pulse energy and the saturation pulse energy was found to be 250 mu J. in the setup. The dependence of the IRPS signal on the HCl number density was also investigated and a detection limit of less than 100 ppm in the atmospheric pressure flame was estimated based on the measurements. The potential interference from water lines related to the IRPS application was also investigated.},
  author       = {Li, Zhongshan and Sun, Zhiwei and Li, Bo and Aldén, Marcus},
  booktitle    = {Proceedings of the Ninth Asia-Pacific International Symposium on Combustion and Energy Utilization},
  isbn         = {978-7-5062-9284-9},
  keyword      = {mid-infrared Polarization Spectroscopy,diagnostics,laser combustion,HCl detection},
  language     = {eng},
  pages        = {222--226},
  publisher    = {World Publishing Corporation},
  title        = {Detection of HCl in a Premixed CH4/O-2/Ar Flame Seeded with CHCl3 Using Mid-IR Polarization Spectroscopy},
  year         = {2008},
}