Title: Mid-IR ICL based TDLAS spectrometer dedicated to monitor HCl concentration in combustion emissions
Authors: Qu, Zhechao, Physikalisch-Technische Bundesanstalt (PTB), Fachbereich 3.4, Analytische Chemie der Gasphase
Werhahn, Olav, Physikalisch-Technische Bundesanstalt (PTB), Fachbereich 3.4, Analytische Chemie der Gasphase
Ebert, Volker, Physikalisch-Technische Bundesanstalt (PTB), Fachbereich 3.4, Analytische Chemie der Gasphase
Contributors: HostingInstitution: Physikalisch-Technische Bundesanstalt (PTB), ISNI: 0000 0001 2186 1887
Pages:5
Language:en
DOI:10.7795/810.20191119A
Resource Type: Text / Article
Publisher: Physikalisch-Technische Bundesanstalt (PTB)
Rights: Download for personal/private use only, if your national copyright law allows this kind of use.
Dates: Available: 2019-11-19
File: Download File (application/pdf) 568.69 kB (582334 Bytes)
MD5 Checksum: 688884184cadfb76a29e534e6ba9beca
SHA256 Checksum: b7782f3f969b529b53a494aab705db3eb254d37264d0f1fdbdf58fd3dced3b4e
Keywords: TDLAS ; HCl spectrometer ; combustion emission ; Mid-IR
Abstract: We present our direct tunable diode laser absorption spectroscopy (dTDLAS) approach targeting accurate HCl measurements in different matrices motivated by combustion emissions such as large-scale power stations or biomass burning domestic boilers. The system is based on a Mid-IR interband cascade laser (ICL) at 3.6 μm probing a HCl transition line in its fundamental band in a 38 cm single pass cell. The dTDLAS system is projected to directly derive absolute HCl concentrations in hot gas plumes with enriched H2O vapor and CO2. The system achieves a noise-equivalent (1σ) sensitivity of 1.0×10−5 cm−1Hz−1/2 for HCl. Integration over 60 s yields a sensitivity of 38 ppb at a meter path length.
Citation: Qu, Zhechao ; Werhahn, Olav ; Ebert, Volker. Mid-IR ICL based TDLAS spectrometer dedicated to monitor HCl concentration in combustion emissions, 2019. Physikalisch-Technische Bundesanstalt (PTB). DOI: https://doi.org/10.7795/810.20191119A