Evseev, Vadim

Fateev, Alexander

Online Research Database In Technology

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Downloaded from orbit.dtu.dk on: Dec 20, 2017On line non-contact gas analysis on an industrial scaleFateev, Alexander; Evseev, VadimPublication date:2009Document VersionPublisher's PDF, also known as Version of recordLink back to DTU OrbitCitation (APA):Fateev, A., & Evseev, V. (2009). On line non-contact gas analysis on an industrial scale [Sound/Visualproduction (digital)]. 1st GERG Academic Network Event, Brussels , Belgium, 04/06/2009On line non-contact gas analysis on an industrial scaleSupervisor: Alexander FateevPhD student: Vadim EvseevGERG Academic Network EventBrussels4th & 5th June 2009DENMARKRisø DTU, Technical University of DenmarkRisø DTU: National Laboratory for Sustainable Energy Technology for sustainable energy supply Wind energy Fuel cells and hydrogen Bioenergy Coming energy technologies:– Fusion – Solar cells– Cleaner energy technologies and energy conservation1 July, 2009On line non-contact gas analysis on an industrial scale2Risø DTU, Technical University of DenmarkIntroduction: Optical Diagnostics Group Development of methods and equipment for on-line optical measurements of gas temperature and species concentrations such as O2, NOx, SO2, CO, CO2, H2O and CxHy in flames or hot gas flows  inside boilers, exhaust pipes, engines, etc. using IR/UV emission/absorption spectrum measurements Investigation of spectral properties of gases at high temperatures This allows to improve quality of spectrum modeling and thus to increase accuracy of on-line measurements Calibration of temperature and infrared measuring equipment (accredited by DANAK)1 July, 2009On line non-contact gas analysis on an industrial scale3Information on inside combustiongas temperaturegas compositionEnvironmental protectionEconomical advances Estimation of performanceOptimizationRisø DTU, Technical University of DenmarkOptical instrumentation IR emission probe a - infrared fibre b - water-cooled stainless steel probe c - optical mount d - protection tube e - water-cooled beam stop1 July, 2009On line non-contact gas analysis on an industrial scale4Optical fibregives flexibility & accessibilityAllows to measure of etc.HClCO2 COH2OtemperatureconcentrationCxHyMeasurements are possible under harsh conditionsRisø DTU, Technical University of Denmark510152025                            Example of an IR emission spectrum1 July, 2009On line non-contact gas analysis on an industrial scale5H2OCO2COBlackbodycurveH2OH2OIR spectrum in a broad spectral rangeA typical IR emission spectrum of a flue gasMeasuring time: 0.5 s Use of FTIR spectroscopy instead of e.g. laser spectroscopy allows to measure IR emission/absorption spectra in a broad spectral range within half a secondCO2CxHyIntensityWavenumbers / cm-1Risø DTU, Technical University of DenmarkOptical instrumentation1 July, 2009On line non-contact gas analysis on an industrial scale61 msAllows to measure of etc.temperatureconcentration SO2NO O2 UV headSO2 & NO are major pollutantsRisø DTU, Technical University of DenmarkExample of an UV absorption spectrum NO, O2 and SO2 have their unique absorption features in the UV region1 July, 2009On line non-contact gas analysis on an industrial scale7Spectrameasured in natural gas combustionO2+CO2+H2ONONORisø DTU, Technical University of DenmarkHot gas cells1 July, 2009On line non-contact gas analysis on an industrial scale8Reference spectraat high temperaturesMeasured spectraSpectrum modelingComparison Uniform gas slabs at given temperatures are reproduced in specially designed gas cells This allows to validate spectra modeling databases at high temperatures to provide spectra of gaseous species those are not available from known databases to validate newly developed instrumentation for non-contact gas analysisRisø DTU, Technical University of DenmarkCeramic hot flow gas cell (HGC)1 July, 2009On line non-contact gas analysis on an industrial scale9Temperature range 20 – 1600 ºCPressure range Approx. 1 bar absOptical path 53.3 cmSpectral regionFrom 200 nm (UV)to 10 μm (IR)Highly uniform temperatureRisø DTU, Technical University of DenmarkNew diagnostic tools: Fast IR imaging I1 July, 2009On line non-contact gas analysis on an industrial scale10 Visual and thermal picture of a super-heater of a boilerIR images made with IR Camera =Endoscope + CEDIP camera Thermal picture of a burner of a boilerFrame rate: 90 images/sDelay between frames: 10 msExposure:333 μsRisø DTU, Technical University of DenmarkNew diagnostic tools: Fast IR imaging II In situ fast IR absorption/emission spectroscopy ACTON spectrometer + CEDIP Camera (InSb 640x512 array) It allows to accomplish measurements within a few microseconds– This gives an opportunity to trace the development of a combustion process in time providing useful information for better understanding of combustion phenomena1 July, 2009On line non-contact gas analysis on an industrial scale11CO CO2Transmitted IR-spectrumExpose time: 2 msEXAMPLEup to7 μsRisø DTU, Technical University of DenmarkNew diagnostic tools: Multichannel Spectrometer A multichannel assembly allows to perform spectral measurements simultaneously from several positions1 July, 2009On line non-contact gas analysis on an industrial scale12CEDIPACTON12 mm0.55 mm512 pixels640 pixelsOptical fibreSlitSimultaneous spectral measurementsRisø DTU, Technical University of DenmarkDistribution in a section ofNew diagnostic tools: 2D Tomography 2D Tomography of e.g. hot gas inside of an exhaust pipe shows distribution of temperature or concentrations in a pipe section1 July, 2009On line non-contact gas analysis on an industrial scale13Temperature or concentration scaleMultichannel SpectrometerOptical fibreOn line 2D visualisationTemperatureConcentrationRisø DTU, Technical University of DenmarkSummary Optically-based techniques developed at Risø make possible to carry out on-line optical measurements of – gas and particle temperatures– concentration of gaseous species These are achieved by measurements of the emission or absorption spectra of gases in UV- and/or IR-ranges availability of high quality reference spectra for the species of interest either measured in one of Risø’s hot gas cells or calculated with use of known and validated databases post-processing of the acquired spectra Spectral measurements can be performed  within sufficiently short period of time at various points inside a combustion unit Risø’s techniques give further opportunities to trace the development of a combustion process in time and space  providing useful information for better understanding of the combustion phenomena1 July, 2009On line non-contact gas analysis on an industrial scale14Risø DTU, Technical University of Denmark Project leader: Sønnik Clausen, sqcl@risoe.dtu.dkSupervisor: Alexander Fateev, alfa@risoe.dtu.dkPhD student: Vadim Evseev, vaev@risoe.dtu.dk Risø National Laboratory for Sustainable Energy Technical University of DenmarkFrederiksborgvej 399 P.O. Box 49 DK-4000 Roskilde  Tel.: +45 4677 4677Fax: +45 4677 5688 www.risoe.dtu.dk1 July, 2009On line non-contact gas analysis on an industrial scale15Thanks for your attention

On line non-contact gas analysis on an industrial scale

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On line non-contact gas analysis on an industrial scale

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