Fateev, Alexander

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Downloaded from orbit.dtu.dk on: Dec 21, 2017Spectroscopy in high- temperature industrial processes on EarthFateev, AlexanderPublication date:2015Document VersionPeer reviewed versionLink back to DTU OrbitCitation (APA):Fateev, A. (2015). Spectroscopy in high- temperature industrial processes on Earth [Sound/Visual production(digital)]. Spectroscopy of Exoplanets, Windsor, United Kingdom, 24/07/2015Spectroscopy of Exoplanets | July 24th – 26th 2015 Senior Scientists Alexander Fateev Spectroscopy in high- temperature industrial processes on Earth • Background  • Large scale measurements • Example/Case 1: NH3 • Example/Case 2: SO2/SO3 • Example/Case 3/UV: C6H6O and C10H8 • Conclusions Spectroscopy in industrial processes| Outline Needs | Large Scale Measurements IR image wood dust flame (video fuel mixing) • Boilers,  • Flames (oil, gas, bio-masses), VIS image grade flame (waste) • Engines (ships, jets),  • Field campaigns (explosions) Complexity | Large Scale Measurements Complexity:  • get results first • trustful system • 1500C is not uncommon Expensive: • access possibilities • man power • time  Campaign at Blok 7 Fynsværket (Denmark)  Data analysis | Large Scale Measurements Data analysis:  • on-line • at home Source of reference data: • measurements in a cell with pre-mixed gases • databases (IR/UV) NO measurements in exhaust duct of a large ship engine Example 1| NH3: experiment (500C, 0.09cm-1) vs calculations (BYTe) Can we use BYTe at 500C for practical apps?   • in general a good agreement • some difficulties with strong line intensities • some frequency shifts in line positions  More work to do at even higher T (>500C) More details:  Emma J. Barton et al “High-resolution absorption measurements of NH3 at high temperatures: 500 - 2100 cm-1” (submitted to JQSRT) Application case 1| In Situ measurements on Pyroneer (6MW) gasifier Gas extraction (150C): 20-06-2014 (17:00-19:30) : NH3=(0.4 ± 0.02)%, H2O=(35 ± 0.6)%, CO2=(14 ± 0.45)%, CO=(10 ± 0.21)%  24-06-2014 (15:00-17:00): NH3=(0.42 ± 0.02)%, H2O=(36 ± 0.6)%, CO2=(13.5 ± 0.45)%, CO=(10.3 ± 0.21)%   In situ (547C): 24-06-2014 (20:00-21:00): NH3=(0.55 ± 0.05)%, H2O=(36 ± 1)% NH3: Q: Why to do measurements? A: NH3 contributes to NOx formation Application case 2| SO2/SO3/NH3 in a hot flue gas SO2/SO3/NH3:    Q: Why to do measurements?                                  A: NOx reduction at SCR/NSCR units, NH3 slip/costs, corrosion/fouling  Example 2| SO3: measurements at 25C and 400C Good news: • Excellent agreement with PNNL data  at 25C • No need to use high-resolution at high T  • Simple to generate, but difficult to measure/quantify  • No databases (SO2/SO3) are available at T>100C Example 2| SO2/SO3 cross sections (0.5cm-1) PhD (Dan Underwood) with UCL:  • SO2 and SO3 line lists • ready by the end 2015 • 2nd Power plant measurement campaign, fall 2015   Example 3/UV | Phenol/Naphthalene UV absorption cross-sections temperature effects • Not too many reference data available even at low T (about 23C)  • An excellent agreement with published data at low T  • Significant changes in the fine structure of the cross-section spectra with T Phenol abs cross-sections: from 23C to 500C Naphthalene abs cross-sections: from 23C to 500C Application case 3/UV| In Situ measurements on LT-CFB (100kW) gasifier Phenol/Naphthalene:  Q: Why to do measurements?                   A: Phenol/Naphthalene – major trace gases from PAH’s in low temperature gasification  DOAS approach: SO2 UV absorption as an example ln(I0/I1) Few new challenges:   • Very strong UV light attenuation • Very broad continuum-like abs structures • Very small L for in situ measurements Application case 3/UV| In Situ measurements on LT-CFB (100kW) gasifier Comparison of the measurements Method Time Temperature Phenol Naphthalene GC-MS 30 min 15◦C  215 ppm 16 ppm Extraction 3 min 150◦C 360 ppm 31 ppm In-situ 3 min 306◦C 7700 ppm 1000 ppm In-situ Extraction Conclusions| Now  In general • You can find a lot inspirations for the work on the Earth • Different research areas can have the same origin • Scientists can make industry guys happy  In particular: o Excellent experimental tools are available for (VUV) UV-FIR optical measurements  o Temperature range can be also negative (e.g. gases at low T) o New data/lines for NH3/SO2/SO3 o New data for phenol/naphthalene  o Try always In Situ and avoid any Ex Situ (extraction) measurements Conclusions| Future • Inspiration comes from industry (small, middle large, …) • Possible spin offs: innovation (patents) • New gas components: CH3Cl, KCl etc. (together with UCL) • Combine several methods to obtain multi-parameters • … ? • Contact: Alexander Fateev   alfa@kt.dtu.dk   +45 23652906   Acknowledgements| Acknowledgements • To Energinet.dk: projects No. 2013-12027,  2011-1-10622, 2010-1-10422  • To MST.dk  • To DONG Energy and Vattenfall  • To UCL (Prof. Jonathan Tennyson’s group) Thank you for your attention 

Spectroscopy in high- temperature industrial processes on Earth

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Spectroscopy in high- temperature industrial processes on Earth

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