@misc{SteinBroeckelRiebeletal., author = {Stein, Oliver and Br{\"o}ckel, Ulrich and Riebel, Ulrich and Hansen, Herbert}, title = {Herstellung von Mikropartikeln durch Hochdruckverd{\"u}sung}, series = {Chemie Ingenieur Technik}, volume = {89}, journal = {Chemie Ingenieur Technik}, number = {8}, issn = {1522-2640}, doi = {10.1002/cite.201600135}, pages = {1092 -- 1096}, abstract = {Herstellung von Mikropartikeln durch Hochdruckverd{\"u}sung}, language = {de} } @inproceedings{Riebel, author = {Riebel, Ulrich}, title = {Koh{\"a}renzselektive Extinktionsmessung mit Licht}, language = {de} } @inproceedings{RiebelKraeuter, author = {Riebel, Ulrich and Kr{\"a}uter, Udo}, title = {Experimentelle Untersuchung zum Einfluss hydrodynamischer Str{\"o}mungsbedingungen und kollektiver Partikel-Welle-Wechselwirkungen auf die Ultraschallextinktion in konzentrierten Suspensionen}, language = {de} } @inproceedings{GuoRiebelGellert, author = {Guo, Xiaoai and Riebel, Ulrich and Gellert, Marcus}, title = {Experimental Investigation of Multiphase Flow Structure behind Bluff Body by LDA and TFS Technique}, abstract = {Vortrag auf Kongress GALA 2006, Sept. 2006}, language = {en} } @inproceedings{RiebelWang, author = {Riebel, Ulrich and Wang, Shaoliang}, title = {Ein selbsttest-f{\"a}higes Streulicht-Z{\"a}hlverfahren. Processnet FA Partikelmesstechnik}, abstract = {Vortrag auf Processnet FA Partikelmesstechnik, 08.-10.03.2010 in Karlsruhe}, language = {de} } @inproceedings{LebedynskyyRiebelJunker, author = {Lebedynskyy, Volodymyr and Riebel, Ulrich and Junker, J{\"u}rgen}, title = {Biologische Abgasreinigung mit dem Bioventilator.}, abstract = {Poster auf der Fachtagung "Bioprozessorientiertes Anlagendesign" 10.-12.05.10 in N{\"u}rnberg}, language = {de} } @inproceedings{LuebbertRiebel, author = {L{\"u}bbert, Christian and Riebel, Ulrich}, title = {1D-Simulation des Corona-Quenchings im Rohrelektroabscheider}, abstract = {Vortrag auf Processnet FA Partikelmesstechnik, 17.-18.03.2010 in Dortmund.}, language = {de} } @inproceedings{LebedynskyyRiebel, author = {Lebedynskyy, Sergiy and Riebel, Ulrich}, title = {Biologische Abgasreinigung mit dem Biobentilator}, abstract = {Vortrag auf Jahrestreffen der Prozessnet-FA "Biokraftstoffe", "Gasreinigung" u. "Paretikelmesstechnik", 30.-31.03.2009, Frankfurt am. M.}, language = {de} } @misc{RiebelSchwentner, author = {Riebel, Ulrich and Schwentner, Joachim}, title = {Verfahren und Vorrichtung zum Abscheiden hochohmiger St{\"a}ube im Elektroabscheider}, language = {de} } @inproceedings{LebedynskyyLuebbertRiebel, author = {Lebedynskyy, Sergiy and L{\"u}bbert, Christian and Riebel, Ulrich}, title = {Autogenic Space-Charge based Precipitator (ARA)}, language = {en} } @inproceedings{LebedynskyyRiebelMnich, author = {Lebedynskyy, Sergiy and Riebel, Ulrich and Mnich, Robert}, title = {Autogener Raumladungs-Abscheider ARA}, abstract = {Vortrag Jahrestreffen der Prozessnet-FA "Biokraftstoffe", "Gasreinigung" u. "Partikelmesstechnik", 30.-31.03.2009, Frankfurt am. M.}, language = {de} } @misc{FleckRiebel, author = {Fleck, Sabine and Riebel, Ulrich}, title = {Konditionieren und Abscheiden von Aerosolen beim Durchgang durch Wirbelschichten}, language = {de} } @article{FleckRiebel, author = {Fleck, Sabine and Riebel, Ulrich}, title = {Einfluss der Fluidisierungsbedingungen auf Abscheidung und Agglomeration von Aerosolen beim Durchgang durch Wirbelschichten}, language = {de} } @inproceedings{BreitensteinRiebel, author = {Breitenstein, Marcus and Riebel, Ulrich}, title = {Einfluss der Fluidisierungsbedingungen auf Abscheidung und Fortschritte bei der Messung der Partikelgr{\"o}ßenverteilung und -kon-zentration durch statistische Auswertung der Transmissionsfluktuation von Licht beim Durchgang durch disperse Systeme}, language = {de} } @inproceedings{FleckRiebel, author = {Fleck, Sabine and Riebel, Ulrich}, title = {Einfluss der relativen Feuchte auf Abscheidung und Agglomeration von feinen Aerosolen in Wirbelschichten}, language = {de} } @inproceedings{FleckRiebel, author = {Fleck, Sabine and Riebel, Ulrich}, title = {Einfluss der Fluidisierungsbedingungen auf Abscheidung und Agglomeration von Verbrennungsaerosolen in einer Wirbelschicht}, isbn = {3-89746-001-7}, language = {de} } @article{FleckRiebel, author = {Fleck, Sabine and Riebel, Ulrich}, title = {Untersuchungen zum Einfluss der Kollektorenart auf Abscheidung und Agglomeration von Verbrennungsaerosolen in einer Wirbelschicht}, language = {de} } @article{LeubnerRiebel, author = {Leubner, Holger and Riebel, Ulrich}, title = {Einfluss einer Querstr{\"o}mung am Filtermedium auf die Kuchenstruktur}, language = {de} } @inproceedings{BreitensteinKraeuterRiebel, author = {Breitenstein, Marcus and Kr{\"a}uter, Udo and Riebel, Ulrich}, title = {Bestimmung der Partikelgr{\"o}ßenverteilung aus den statistischen Eigenschaften der Transmissionsfluktuation von Licht in dispersen Systemen}, language = {de} } @misc{RiebelKraeuter, author = {Riebel, Ulrich and Kr{\"a}uter, Udo}, title = {Verfahren zur Partikelgr{\"o}ßenmessung}, language = {de} } @book{RiebelKhatchikian, author = {Riebel, Ulrich and Khatchikian, Peter}, title = {Verfahren zur Messung von Dichte und Massenstrom}, language = {de} } @inproceedings{RiebelKraeuterBreitenstein, author = {Riebel, Ulrich and Kr{\"a}uter, Udo and Breitenstein, Marcus}, title = {Particle size analysis based on statistical transmission fluctuations}, isbn = {3-921590-53-1}, language = {en} } @inproceedings{FleckRiebel, author = {Fleck, Sabine and Riebel, Ulrich}, title = {Collection and Agglomeration of Fine Aerosols in a Fluidized Bed}, isbn = {3-921590-54-X}, language = {en} } @inproceedings{FleckRiebel, author = {Fleck, Sabine and Riebel, Ulrich}, title = {Abscheidung und Agglomeration feiner Teilchen in einer Wirbelschicht - Einfluss der Fluidisierungebedingungen und der Art der Kollektoren}, language = {de} } @inproceedings{FleckRiebel, author = {Fleck, Sabine and Riebel, Ulrich}, title = {Untersuchungen zum Einfluss der Fluidisierungebedingungen auf Abscheidung und Agglomeration von Aerosolen beim Durchgang durch Wirbelschichten}, language = {de} } @inproceedings{KhatchikianRiebelGutschetal., author = {Khatchikian, Peter and Riebel, Ulrich and Gutsch, Andreas and Riemenschneider, H.}, title = {Measurement of Mass Flow in Pneumatic Conveying of Fine Powders}, isbn = {3-921590-53-1}, language = {en} } @article{RiebelGutsch, author = {Riebel, Ulrich and Gutsch, Andreas}, title = {Massenstrommessung bei der pneumatischen F{\"o}rderung feinstdisperser Sch{\"u}ttg{\"u}ter}, language = {de} } @inproceedings{FleckRiebel, author = {Fleck, Sabine and Riebel, Ulrich}, title = {Untersuchungen zum Einfluss der Art der Kollektoren auf Abscheidung und Agglomeration von Verbrennungsaerosolen in einer Wirbelschicht}, language = {de} } @article{RiebelFischerLeubner, author = {Riebel, Ulrich and Fischer, Reiko and Leubner, Holger}, title = {Ein Filterpr{\"u}fstand in Anlehnung an Richtlinie : Erfahrungsberichte aus der Anwendung der Richtlinie VDI 3926}, language = {de} } @inproceedings{Riebel, author = {Riebel, Ulrich}, title = {Grundlagen der Ultraschallextinktion}, language = {en} } @inproceedings{RiebelRadtkeLoos, author = {Riebel, Ulrich and Radtke, R. and Loos, R.}, title = {Experimentelle Untersuchungen zum Corona-Quenching}, language = {de} } @article{BreitensteinRiebel, author = {Breitenstein, Marcus and Riebel, Ulrich}, title = {Grundlagen der statistischen Partikelgr{\"o}ßenspektrometrie}, language = {de} } @inproceedings{StommelRiebel, author = {Stommel, Yves-Gorat and Riebel, Ulrich}, title = {Aerosolverd{\"u}nnung}, language = {de} } @inproceedings{LeubnerRiebel, author = {Leubner, Holger and Riebel, Ulrich}, title = {Einfluss der Oberfl{\"a}chenbeschaffenheit des Filtermediums auf den spe-zi-fischen Kuchenwiderstand}, language = {de} } @inproceedings{BachmannSorrentinoRiebel, author = {Bachmann, C. and Sorrentino, Jos{\´e} and Riebel, Ulrich}, title = {Estimation of filter cake properties using narrow-angle photometer measurements}, language = {en} } @article{LeubnerRiebel, author = {Leubner, Holger and Riebel, Ulrich}, title = {Einfluss der Oberfl{\"a}chenbeschaffenheit des Filtermediums auf den spezifischen Staubkuchenwiderstand}, language = {de} } @book{RiebelStommel, author = {Riebel, Ulrich and Stommel, Yves-Gorat}, title = {Verfahren zur Verd{\"u}nnung von Aerosolen bei der Messung der Aerosolkonzentration und Vorrichtung zur Durchf{\"u}hrung des Verfahrens}, language = {de} } @inproceedings{Riebel, author = {Riebel, Ulrich}, title = {High Concentration Limits in On-line Particle Sizing - a Survey}, language = {en} } @inproceedings{ShenRiebel, author = {Shen, Jianqi and Riebel, Ulrich}, title = {Extinction by a Spherical Particle Located in a Gaussian Beam}, language = {en} } @inproceedings{Riebel, author = {Riebel, Ulrich}, title = {Partikeln, Strahlungen und Signale - eine Betrachtung zur Extinktionsmesstechnik}, language = {de} } @inproceedings{Riebel, author = {Riebel, Ulrich}, title = {Particles, Signals and Radiations - a Survey of Averaging Problems and Signal Statistics in Extinction Measurements}, language = {en} } @inproceedings{KraeuterGrammenoudisRiebel, author = {Kr{\"a}uter, Udo and Grammenoudis, P. and Riebel, Ulrich}, title = {Neural Network Recongition of Particle Size Distributions from Ultrasonic Extinction Measurements}, language = {en} } @inproceedings{Riebel, author = {Riebel, Ulrich}, title = {Coherence-Selective Extinction Measurement in Suspensions}, language = {en} } @article{KraeuterKhatchikianRiebel, author = {Kr{\"a}uter, Udo and Khatchikian, Peter and Riebel, Ulrich}, title = {Die frequenzabh{\"a}ngige Phasengeschwindigkeit als Grundlage zur Partikelgr{\"o}ßenanalyse in konzentrierten Suspensionen}, language = {de} } @inproceedings{Riebel, author = {Riebel, Ulrich}, title = {The Velocity of Sound in Suspensions}, language = {en} } @inproceedings{KhatchikianKraeuterRiebel, author = {Khatchikian, Peter and Kr{\"a}uter, Udo and Riebel, Ulrich}, title = {Speed of Sound in Suspensions. Control of Particulate Processes IV}, language = {en} } @inproceedings{RiebelLeubner, author = {Riebel, Ulrich and Leubner, Holger}, title = {Application of a Filter Test Rig for Basic Investigations on Filtration with Regenerable Filter Media}, abstract = {BWF-Seminar Wuxi, V.R.China, Oktober 2002.}, language = {en} } @article{Riebel, author = {Riebel, Ulrich}, title = {Probleme mit dem Filter}, language = {de} } @article{MnichRiebel, author = {Mnich, Robert and Riebel, Ulrich}, title = {GVC-Fachausschuss "Gasreinigung"}, language = {de} } @inproceedings{LeubnerRiebel, author = {Leubner, Holger and Riebel, Ulrich}, title = {Charakterisierung und Vergleichbarkeit von Abreinigungsimpulsen}, language = {de} } @misc{Riebel, author = {Riebel, Ulrich}, title = {Vorrichtung zum Abreinigen von Elektroabscheidern und Verfahren zum Betreiben der Vorrichtung}, abstract = {Deutsche Patentanmeldung DBPA 103 00 549.8, vom 09.01.2003}, language = {de} } @misc{Riebel, author = {Riebel, Ulrich}, title = {Vorrichtung und Verfahren zur kombinierten Abscheidung von Aerosolen, gasf{\"o}rmigen Komponenten und Ger{\"u}chen (Bio-elektrischer Geruchsabscheider)}, abstract = {Deutsche Patentanmeldung DBPA 103 19 351.0, vom 29.04.2003}, language = {de} } @article{LeubnerRiebel, author = {Leubner, Holger and Riebel, Ulrich}, title = {Druckstoßabreinigung textiler und starrer Filtermedien: Abreinigungsrelevante Parameter}, language = {de} } @misc{Riebel, author = {Riebel, Ulrich}, title = {Vorrichtung und Verfahren zur Aerosolauf- oder Aerosolumladung in einen definierten Ladungszustand einer bipolaren Diffusionsaufladung mit Hilfe einer elektrischen Entladung im Aerosolraum}, abstract = {Deutsche Patentanmeldung DBPA 103 48 217.1-54, vom 16.10.03}, language = {de} } @article{StommelRiebel, author = {Stommel, Yves-Gorat and Riebel, Ulrich}, title = {Neutrale Aerosole ohne Radioaktivit{\"a}t}, language = {de} } @inproceedings{StommelRiebel, author = {Stommel, Yves-Gorat and Riebel, Ulrich}, title = {Characteristics of a new aerosol dilution system for volumetric flow rates between 0,2 and 1 l/min}, language = {en} } @inproceedings{GuoRiebelShen, author = {Guo, Xiaoai and Riebel, Ulrich and Shen, Jianqi}, title = {Particle Size Analysis by Transmission Fluctuation Spectrometry: Theory and Simulations on the Sparial Correlation Technique}, language = {en} } @article{StommelRiebel, author = {Stommel, Yves-Gorat and Riebel, Ulrich}, title = {Neutralisation von geladenen und ungeladenen sibmikronen Aerosolen mit Hilfe eines Corona-basierten elektrischen Neutralisators}, language = {de} } @incollection{StommelRiebel, author = {Stommel, Yves-Gorat and Riebel, Ulrich}, title = {A corona-discharge based aerosol neutralisizer designed for use with the SMPS-system}, language = {en} } @article{LeubnerMnichRiebel, author = {Leubner, Holger and Mnich, Robert and Riebel, Ulrich}, title = {Precoatfiltration zur gleichzeitigen Abscheidung von St{\"a}uben und sauren Gasen}, language = {de} } @inproceedings{GuoRiebel, author = {Guo, Xiaoai and Riebel, Ulrich}, title = {A TFS-based Technique for Measuring Particle Size Distribution and Concentration in Flowing Suspensions}, series = {Fachtagung "Lasermethoden in der Str{\"o}mungsmesstechnik", 6. - 8. September 2005, BTU Cottbus}, booktitle = {Fachtagung "Lasermethoden in der Str{\"o}mungsmesstechnik", 6. - 8. September 2005, BTU Cottbus}, pages = {45-1 -- 45-8}, language = {en} } @article{MnichRiebelToshev, author = {Mnich, Robert and Riebel, Ulrich and Toshev, Plamen}, title = {Bio-elektrische Gasreinigung mit "BEGA"}, language = {de} } @inproceedings{GuoRiebel, author = {Guo, Xiaoai and Riebel, Ulrich}, title = {Transmission Fluctuation Correlation Properties of Radiation through a Two-dimensional Hard-Sphere Monolayer, Poster.}, language = {en} } @inproceedings{RiebelMnichToshev, author = {Riebel, Ulrich and Mnich, Robert and Toshev, Plamen}, title = {Biological-Electrical Gas Cleaner BEGA}, language = {en} } @inproceedings{GuoRiebel, author = {Guo, Xiaoai and Riebel, Ulrich}, title = {Characterization of Multiphase Flow Structures and Particle Sizing by Evaluation of Statistical Light Transmission Fluctuation}, language = {en} } @misc{Riebel, author = {Riebel, Ulrich}, title = {Demonstration der Feinstaubentstehung beim Betrieb von offenen Feuerstellen}, abstract = {Auftritt im Regionalfernsehen RBB, April 2007}, language = {de} } @inproceedings{Riebel, author = {Riebel, Ulrich}, title = {Design and Evaluation of Small Electrostatic Precipitators}, language = {en} } @inproceedings{Riebel, author = {Riebel, Ulrich}, title = {Sampling and Measurement of Charged Aerosols. Aerosol Sampling and Measurement behind ESP's}, language = {de} } @misc{Riebel, author = {Riebel, Ulrich}, title = {Gasreinigung - Neue Herausforderungen und neue Erkenntnisse f{\"u}r Filter, W{\"a}scher und Co.}, language = {de} } @misc{LuebbertRiebel, author = {L{\"u}bbert, Christian and Riebel, Ulrich}, title = {Corona Quenching - Elektroabscheider bei hohen Aerosolkonzentrationen}, language = {de} } @misc{LuebbertRiebel, author = {L{\"u}bbert, Christian and Riebel, Ulrich}, title = {Electrostatic Precipitator Operation at Corona Quenching Conditions - Theory, Simulation and Experiments}, language = {en} } @misc{RiebelLuebbertLebedynskyy, author = {Riebel, Ulrich and L{\"u}bbert, Christian and Lebedynskyy, Sergiy}, title = {Elektroabscheider - es gibt noch viel zu tun}, series = {Chemie Ingenieur Technik}, volume = {84}, journal = {Chemie Ingenieur Technik}, number = {7}, issn = {0009-286X}, pages = {1099 -- 1113}, language = {de} } @inproceedings{AleksinRiebelVora, author = {Aleksin, Yury and Riebel, Ulrich and Vora, Alpesh Laxman}, title = {A New Understanding of Electrical Conduction through Highly Resistive Dusts and the Mechanism of Back Corona in Electrostatic Precipitators}, series = {Partec 2013 Conference, April 23rd - 25th, 2012 N{\"u}rnberg Messe}, booktitle = {Partec 2013 Conference, April 23rd - 25th, 2012 N{\"u}rnberg Messe}, language = {en} } @inproceedings{VoraRiebel, author = {Vora, Alpesh Laxman and Riebel, Ulrich}, title = {Experimental study and numerical modeling of a microscopic level charge transport in high resistive single particle-particle contact and contact gap}, series = {Partec 2013 Conference, April 23rd - 25th, 2012 N{\"u}rnberg Messe}, booktitle = {Partec 2013 Conference, April 23rd - 25th, 2012 N{\"u}rnberg Messe}, language = {en} } @inproceedings{PerwinRiebel, author = {Perwin, J{\"o}rg and Riebel, Ulrich}, title = {Optical Measurement Technique for In-situ Observation of Nanoparticle Precipitation in Plug Flow Reactors}, series = {Partec 2013 Conference, April 23rd - 25th, 2012 N{\"u}rnberg Messe}, booktitle = {Partec 2013 Conference, April 23rd - 25th, 2012 N{\"u}rnberg Messe}, language = {en} } @misc{RiebelLebedynskyy, author = {Riebel, Ulrich and Lebedynskyy, Volodymyr}, title = {Selbstregulierender bipolarer Agglomerator}, abstract = {Europ{\"a}isches Patent: Selbstregulierender bipolarer Agglomerator}, language = {de} } @misc{RiebelAleksin, author = {Riebel, Ulrich and Aleksin, Yury}, title = {Niederfrequent betriebener Elektroabscheider f{\"u}r hochohmige St{\"a}ube}, abstract = {Deutsches Patent: Niederfrequent betriebener Elektroabscheider f{\"u}r hochohmige St{\"a}ube}, language = {de} } @misc{RiebelAleksinVora, author = {Riebel, Ulrich and Aleksin, Yury and Vora, Alpesh Laxman}, title = {Das Verhalten hochohmiger St{\"a}ube}, series = {Chemie-Ingenieur-Technik}, volume = {85}, journal = {Chemie-Ingenieur-Technik}, number = {3}, issn = {1522-2640}, pages = {235 -- 244}, language = {de} } @incollection{HartmannRiebelMatthesetal., author = {Hartmann, Ingo and Riebel, Ulrich and Matthes, Mirjam and Thiel, Christian and Kohler, Heinz and Groll, Andreas}, title = {Demonstration von Maßnahmen zur Emissionsminderung an Biomasse-Kleinfeuerungen}, series = {Effizient, umweltvertr{\"a}glich, dezentral - Neue Konzepte f{\"u}r die Nutzung von biogenen Festbrennstoffen, Teil 2}, booktitle = {Effizient, umweltvertr{\"a}glich, dezentral - Neue Konzepte f{\"u}r die Nutzung von biogenen Festbrennstoffen, Teil 2}, editor = {Thr{\"a}n, Daniela}, publisher = {DBFZ Leipzig}, address = {Leipzig}, pages = {45 -- 59}, abstract = {Maßnahmen zur Emissionsminderung an Biomasse-Kleinfeuerungen}, language = {de} } @misc{MatthesHartmannGrolletal., author = {Matthes, Mirjam and Hartmann, Ingo and Groll, Andreas and Riebel, Ulrich}, title = {Investigation on application and performance of emission reduction measures at a pellet boiler}, series = {Biomass conversion and biorefinery}, volume = {6}, journal = {Biomass conversion and biorefinery}, number = {3}, issn = {2190-6815}, doi = {10.1007/s13399-015-0187-1}, pages = {301 -- 313}, abstract = {Investigation on application and performance of emission reduction measures at a pellet boiler}, language = {en} } @inproceedings{RiebelAleksinVora, author = {Riebel, Ulrich and Aleksin, Yury and Vora, Alpesh Laxman}, title = {Non-ohmic properties of highly resistive dust layers - experimental studies and numerical modelling under OpenFOAM®}, series = {ICESP XIV. International Conference on Electrostatic Precipitation 2016", Wroclaw, Polen, 19.-23.09.2016}, booktitle = {ICESP XIV. International Conference on Electrostatic Precipitation 2016", Wroclaw, Polen, 19.-23.09.2016}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus4-41823}, pages = {5}, language = {en} } @misc{AleksinRiebelKurtsiefer, author = {Aleksin, Yury and Riebel, Ulrich and Kurtsiefer, Rolf}, title = {Abscheidung hochohmiger St{\"a}ube in einem Elektroabscheider mit niederfrequenter AC-Hochspannung (NIFRA)}, series = {Chemie Ingenieur Technik}, volume = {88}, journal = {Chemie Ingenieur Technik}, number = {9}, issn = {1522-2640}, doi = {10.1002/cite.201650129}, pages = {1356}, abstract = {Abscheidung hochohmiger St{\"a}ube in einem Elektroabscheider mit niederfrequenter AC-Hochspannung (NIFRA)}, language = {de} } @misc{BacherRiebelMarschalletal., author = {Bacher, Christian and Riebel, Ulrich and Marschall, Simon and Groll, Andreas}, title = {Visualization of submicron aerosol agglomeration by laser-induced fluorescence}, series = {Aerosol Science and Technology}, volume = {51}, journal = {Aerosol Science and Technology}, number = {9}, issn = {1521-7388}, doi = {10.1080/02786826.2017.1339863}, pages = {1093 -- 1098}, language = {en} } @misc{AleksinVoraRiebel, author = {Aleksin, Yury and Vora, Alpesh Laxman and Riebel, Ulrich}, title = {A new understanding of electric conduction in highly resistive dusts and bulk powders}, series = {Powder Technology}, volume = {294}, journal = {Powder Technology}, issn = {0032-5910}, pages = {353 -- 364}, abstract = {A new understanding of electric conduction in highly resistive dusts and bulk powders.}, language = {en} } @misc{BacherLebedynskyyFischeretal., author = {Bacher, Christian and Lebedynskyy, Volodymyr and Fischer, Silvio and Riebel, Ulrich}, title = {Discharge electrode geometry and energy efficiency in a one-stage wire-tube electrostatic precipitator operating at high concentrations of submicron liquid aerosol}, series = {Environmental Technology}, journal = {Environmental Technology}, issn = {0959-3330}, doi = {10.1080/09593330.2018.1555613}, pages = {13}, abstract = {In order to help answering the question "Which electrode design is the best?", the precipitation performance of a tubular ESP was determined for different electrode designs with special attention to specific energy consumption. Experiments were conducted in a wire-tube arrangement with a high loading of liquid submicron particles causing strong space charge effects, also known as corona quenching. The experiments are supplemented by numerical simulation results showing the effect of residence time and power consumption on separation efficiency.}, language = {en} } @misc{VoraStepputatRiebel, author = {Vora, Alpesh Laxman and Stepputat, Jan and Riebel, Ulrich}, title = {Charge transfer between single highly resistive particles: Experiments and Numerical Simulation}, series = {PARTEC, International Congress on Particle Technology, 2019, N{\"u}rnberg}, journal = {PARTEC, International Congress on Particle Technology, 2019, N{\"u}rnberg}, language = {en} } @misc{MedinaMendezSchmidtRiebel, author = {Medina M{\´e}ndez, Juan Ali and Schmidt, Heiko and Riebel, Ulrich}, title = {Towards a One-Dimensional Turbulence Approach for Electrohydrodynamic Flows}, language = {en} } @misc{MedinaMendezSchmidtRiebel, author = {Medina M{\´e}ndez, Juan Ali and Schmidt, Heiko and Riebel, Ulrich}, title = {Extension of the One-Dimensional Turbulence model towards electrohydrodynamic variable density flows}, series = {17th European Turbulence Conference (ETC2019), 3-6 September 2019, Torino,}, journal = {17th European Turbulence Conference (ETC2019), 3-6 September 2019, Torino,}, address = {Turin}, pages = {1}, language = {en} } @misc{BuergerRiebel, author = {B{\"u}rger, Patrick and Riebel, Ulrich}, title = {Behaviour of a flame-generated SiO2 aerosol in electrostatic precipitators at elevated temperatures: A back-corona investigation}, series = {Jahrestreffen der ProcessNet-Fachgruppen Mechanische Fl{\"u}ssigkeitsabtrennung und Gasreinigung}, journal = {Jahrestreffen der ProcessNet-Fachgruppen Mechanische Fl{\"u}ssigkeitsabtrennung und Gasreinigung}, doi = {10.13140/RG.2.2.34057.39528}, pages = {1}, abstract = {The removal of high-resistivity dusts from gas flows using electrostatic precipitators (ESPs) is challenging and requires counter-measures to suppress back-corona and subsequent particle re-entrainment. The critical dust layer thickness for the occurrence of back-corona may vary by several orders of magnitude depending on the specific dust resistivity, dust layer porosity, particle size, humidity and operating temperature. Despite the difficulties at elevated operating temperatures, processes involving highly resistive dusts (e.g. oxidic materials) may benefit significantly from utilizing high temperature ESPs (HT-ESPs). This is because the specific resistivity of materials like SiO2, Al2O3 and other oxides decreases below the critical value of 10^11 Ω*cm at higher temperatures. Currently, the separation of oxidic nanoparticle products relies on cloth filters which require exhaust gas quenching prior to dust removal. Using heat exchangers instead to recover excess heat is not feasible due to severe scale formation. Therefore, the development of a reliable HT-ESP would allow heat exchange at clean gas conditions reducing operating costs of the overall process. During preliminary experiments for our ongoing investigation of HT-ESPs, the behaviour of a flame-generated SiO2 aerosol was studied at 200°C in a wire-tube configuration. In order to reach a better understanding of the back-corona, measurements of the particle size distribution, particle charge distribution and electric current were conducted for both polarities. Strong effects are found even though the dust layer thickness is a few μm only. While the separation efficiency decreases rapidly after a critical dust layer thickness is reached, the current uptake increases significantly (up to a factor of 20), and a large number of inversely charged particles is found in the clean gas. These effects may indicate a large-scale back-corona. A detailed discussion will be given on the basis of aerosol size and mobility distributions, SEM images and resistivity measurements of the dust layer. We gratefully acknowledge the financial support for this project (EFRE-StaF 23035000) by the European Fund for Regional Development.}, language = {en} } @misc{BuergerRiebel, author = {B{\"u}rger, Patrick and Riebel, Ulrich}, title = {Electrostatic Charging and Precipitation of Nanoparticles in Technical Nitrogen: Highly Efficient Diffusion Charging by Hot Free Electrons}, series = {Jahrestreffen der ProcessNet-Fachgruppen Computational Fluid Dynamics und Gasreinigung}, journal = {Jahrestreffen der ProcessNet-Fachgruppen Computational Fluid Dynamics und Gasreinigung}, doi = {10.13140/RG.2.2.35735.11687}, pages = {1}, abstract = {Electrostatic charging and deposition of a liquid nano-aerosol was studied in dry air and in technical (3.6 \% O2) nitrogen. The experiments have shown that electronic charging of aerosols can be important in technical scale electrostatic precipitators (ESPs). Already at operation voltages just slightly above the corona onset voltage, the contribution of the free electrons to the overall current is estimated to be around 50 \%. Due to the high temperature of free electrons, diffusion charging by free electrons allows to reach exceptionally high particle charge and extremely high precipitation efficiency. A strongly simplified theoretical model was developed, which gives a good prediction of particle charge based on averaged values of particle diameter, current density, electric field strength, electron temperature and residence time. The ion mobilities were determined by fitting the current-voltage characteristics with a modified Townsend (Monrolin et al. 2018) equation and are significantly higher than the values typically used to describe diffusion charging in air. This may be ascribed to the very dry gas phase and the short average lifespan of the ions under ESP conditions, which is in the order of 1 ms. From the practical point of view, electronic charging might be relevant in a number of technical applications, including high temperature ESPs, ESP applications in dry and oxygen-free gases and pulsed corona systems. We gratefully acknowledge the financial support for this project (EFRE-StaF 23035000) by the European Fund for Regional Development. Monrolin, N., Praud, O., Plourabou{\´e}, F. 2018. Revisiting the positive DC corona discharge theory: Beyond Peek's and Townsend's law. Phys. Plasmas 25, 063503; doi: 10.1063/1.5031780.}, language = {en} } @misc{BacherRiebel, author = {Bacher, Christian and Riebel, Ulrich}, title = {Investigation of electrohydrodynamically enhanced turbulence in wire-tube electrostatic precipitators for enhanced mass and heat transfer}, series = {ICESP 2018, Charlotte, USA, 9-11 October 2018}, journal = {ICESP 2018, Charlotte, USA, 9-11 October 2018}, pages = {6}, abstract = {Enhanced heat and mass transfer due to electrohydrodynamically induced flow in electrostatic precipitators provides a potential opportunity for versatile new applications in the process industry. After a short review of the physical fundamentals it is explained why measurements of the pressure gradient play an important role in the design principles for this technology. Its external influence by operating parameters like voltage polarity and aerosol conditions will also be shown. In the second part, the feasibility of enhanced mass and heat transfer is demonstrated based on laboratory measurements. In combination with the previously discussed pressure gradient measurements, methods for simplified engineering concepts like equivalent mean flow velocities or turbulent diffusion coefficients are shown. The topic is rounded off by outlining a potential use in decentralized power generation.}, language = {en} } @misc{BacherRiebelMedinaMendezetal., author = {Bacher, Christian and Riebel, Ulrich and Medina M{\´e}ndez, Juan Ali and Schmidt, Heiko}, title = {Nutzbarmachung des elektrischen Windes zum verbesserten W{\"a}rme und Stofftransport im Elektroabscheider}, series = {ProcessNet 2020, Fachgruppe Gasreinigung}, journal = {ProcessNet 2020, Fachgruppe Gasreinigung}, pages = {1}, abstract = {Zur F{\"o}rderung einer nachhaltigeren Wertsch{\"o}pfungskette werden im Rahmen der Energiewende st{\"a}ndig neue Verfahren und Konzepte zu deren Umsetzung entwickelt. Eines dieser Konzepte befasst sich mit der Zusammenf{\"u}hrung bislang entkoppelter Prozessschritte in Gasreinigungssystemen aus der Energie- und Anlagentechnik. Aus den daraus resultierenden Einsparungen bei den Investitionskosten profitieren nicht nur die klassischen Energieerzeugeuer und Produktionsanlagen in der chemischen Industrie, sondern es werden auch neue Anreize zur dezentralen Energieeinspeisung von kleineren und mittelst{\"a}ndischen Unternehmen gesetzt. Elementarer Bestandteil dieser Gasreinigungssysteme sind h{\"a}ufig Elektroabscheider, welche weit verbreitet im Einsatz sind um Abgase von St{\"a}uben bzw. Aerosolen zu befreien, oder um staubf{\"o}rmige Wertprodukte aus Gasstr{\"o}mungen abzuscheiden. Die in Elektroabscheidern prinzipbedingt vorhandenen elektro¬¬hydro¬dyna¬mischen Str{\"o}mungen, auch als elektrischer Wind bezeichnet, sollen nun systematisch genutzt werden, um neben der Aerosolabscheidung gleichzeitig Aufgaben des W{\"a}rme- und Stoffaustauschs zu l{\"o}sen. Inhalte der Untersuchungen Zur Validierung der Machbarkeit dieser neuen Techniken wurde der Einfluss des elektrischen Windes auf die turbulente Quervermischung, anhand des verbesserten W{\"a}rme- und Stofftransports, sowie des Druckverlusts im Rohrelektroabscheider getestet. Bei den Untersuchungen wurden unterschiedliche Str{\"o}mungsgeschwindigkeiten, Elektrodengeometrien und Betriebsspannungen, sowie die Anwesenheit von Aerosol ber{\"u}cksichtigt. Ein Teil der Ergebnisse diente bereits als Validierungsgrundlage f{\"u}r numerische Simulationen mit einem neuartigen Turbulenzmodell [1]. [1] Medina, J., Schmidt, H., Riebel, U., Application of the one-dimensional turbulence model for electrohydrodynamic variable density flows, 17th European Turbulence Conference, 3-6 September 2019, Torino, Italy}, language = {de} } @misc{BuergerRiebel, author = {B{\"u}rger, Patrick and Riebel, Ulrich}, title = {Characterization of flame-generated SiO2 aerosols and their utilization in research of high temperature electrostatic precipitation: A project outlook}, series = {Jahrestreffen der ProcessNet-Fachgruppe Gasreinigung und des TAK Aerosoltechnik}, journal = {Jahrestreffen der ProcessNet-Fachgruppe Gasreinigung und des TAK Aerosoltechnik}, doi = {10.13140/RG.2.2.30701.95209}, pages = {1}, abstract = {Gas-phase particle separation at significantly elevated temperatures is a scope since heat recovery units might be operated with higher efficiency and lower maintenance costs when fouling by particulate deposits could be reduced. However, this proves difficult for most separation techniques for numerous reasons (particle size limitations, material limitations, pressure difference limitations). While the upper temperature limit for standard electrostatic precipitators (ESP) operated at ambient pressure and with negative polarity is around 400°C, positive polarity theoretically should allow an operation with temperatures well above 600°C. However, there seems to be very little experience with high temperature ESPs even on the lab scale or small pilot scale. To close this apparent gap in electrostatic precipitation research our current project aims to investigate the characteristics of a SiO2 aerosol and the capabilities of an ESP dealing with said SiO2 aerosol at 600°C and above. The aerosol is produced by combustion of silicone oil (HMDSO) in a propane flame which leads to particle size distributions ranging from below 10 nm up to 400 nm. The median value of the distribution and the total number concentration is a function of the gaseous HMDSO amount introduced into the flame. Increasing the HMDSO supply shifts the median to larger particle diameters but also reduces the total number concentration, which is an interesting phenomenon to be looked into in more detail during the project since coagulation cannot explain this on its own. The observed high number concentrations at low HMDSO feed rates may involve thermal rebound which needs further investigation. Additionally, the bipolar charge distribution typical for flame-generated aerosols has to be considered when deriving an explanation for the observations. The next steps will be a more detailed characterization of the produced SiO2 aerosol and the operation of a high temperature ESP in wire-tube geometry.}, language = {en} } @misc{MedinaMendezBacherSchmidtetal., author = {Medina M{\´e}ndez, Juan Ali and Bacher, Christian and Schmidt, Heiko and Riebel, Ulrich}, title = {EHD-ODT: a stochastic turbulence model for the study of heat and mass transfer in wire-tube electrostatic precipitators}, series = {Jahrestreffen der ProcessNet-Fachgruppen Computational Fluid Dynamics und Gasreinigung}, journal = {Jahrestreffen der ProcessNet-Fachgruppen Computational Fluid Dynamics und Gasreinigung}, publisher = {DECHEMA e.V.}, pages = {2}, language = {en} } @misc{BuergerRiebel, author = {B{\"u}rger, Patrick and Riebel, Ulrich}, title = {Formation of highly resistive SiO2 nanoparticle layers from the aerosol by electrostatic precipitation at 200 °C: Observations on back corona and nanoparticle layer structure}, series = {Journal of Nanoparticle Research}, volume = {23}, journal = {Journal of Nanoparticle Research}, number = {8}, issn = {1572-896X}, doi = {10.1007/s11051-021-05292-4}, language = {en} } @misc{BuergerRiebel, author = {B{\"u}rger, Patrick and Riebel, Ulrich}, title = {High temperature coronas in air and flue gas from LPG combustion: Current-voltage characteristics, ion mobilities and free electrons}, series = {Journal of Electrostatics}, volume = {115}, journal = {Journal of Electrostatics}, issn = {1873-5738}, abstract = {Positive and negative corona discharges were studied at atmospheric pressure in a tube-wire geometry with a tube diameter of 150 mm. Current-voltage characteristics (CVCs) were measured both in air and in flue gas produced with a liquefied petroleum gas (LPG) burner, covering temperatures from ambient up to 1073 K. Corona operation was stable over the whole temperature range with positive polarity and up to 973 K with negative polarity. Based on a detailed analysis of the original CVC measurements, new insights on the temperature-dependent mobility of gas ions, on the occurrence of free electrons and on the electronic current contribution are presented. Deviations from the Townsend theory of CVCs can be ascribed to the lifetime-dependency of ion mobility caused by the formation of cluster ions. The contribution from free electrons is found to depend on temperature and tube radius.}, language = {en} } @misc{MedinaMendezBacherSchmidtetal., author = {Medina M{\´e}ndez, Juan Ali and Bacher, Christian and Schmidt, Heiko and Riebel, Ulrich}, title = {A dusty gas approach for electrostatic precipitation of monodisperse aerosols using One-Dimensional Turbulence}, series = {4th International Symposium on Multiscale Multiphase Process Engineering (MMPE) 2022, Berlin, Germany, 25-28 September 2022, Book of Abstracts}, journal = {4th International Symposium on Multiscale Multiphase Process Engineering (MMPE) 2022, Berlin, Germany, 25-28 September 2022, Book of Abstracts}, language = {en} } @misc{MedinaMendezBacherSchmidtetal., author = {Medina M{\´e}ndez, Juan Ali and Bacher, Christian and Schmidt, Heiko and Riebel, Ulrich}, title = {A dusty gas approach for electrostatic precipitation of monodisperse aerosols using One-Dimensional Turbulence}, language = {en} } @misc{MedinaMendezSchmidtRiebel, author = {Medina M{\´e}ndez, Juan Ali and Schmidt, Heiko and Riebel, Ulrich}, title = {Towards the stochastic modeling of electrostatic precipitators under dusty gas conditions of charged aerosols}, series = {Book of Abstracts zum Jahrestreffen der DECHEMA-Fachgruppen Aerosoltechnik, Gasreinigung, Mehrphasenstr{\"o}mung und Partikelmesstechnik, 28. - 30. M{\"a}rz 2023}, journal = {Book of Abstracts zum Jahrestreffen der DECHEMA-Fachgruppen Aerosoltechnik, Gasreinigung, Mehrphasenstr{\"o}mung und Partikelmesstechnik, 28. - 30. M{\"a}rz 2023}, publisher = {Universit{\"a}t Paderborn}, address = {Paderborn}, pages = {8 -- 9}, language = {en} } @inproceedings{Riebel, author = {Riebel, Ulrich}, title = {Cleaning of highly concentrated aerosols : Electrastatic precipitations vs. bipolar agglomeration}, series = {PARTEC 2016,International Congress on Particle Technology, April 19-21, 2016, N{\"u}rnberg, Germany, book of abstracts}, booktitle = {PARTEC 2016,International Congress on Particle Technology, April 19-21, 2016, N{\"u}rnberg, Germany, book of abstracts}, publisher = {VDI-Verl.}, address = {D{\"u}sseldorf}, isbn = {978-3-18-092283-6}, language = {en} } @misc{MedinaMendezFistlerOevermannetal., author = {Medina M{\´e}ndez, Juan Ali and Fistler, Marco and Oevermann, Michael and Schmidt, Heiko and Riebel, Ulrich}, title = {Economical map-based turbulence models: Developments and perspectives for the numerical analysis of electrostatic precipitation}, series = {Book of Abstracts PARTEC International Congress on Particle Technology, September 26-28, 2023, N{\"u}rnberg}, journal = {Book of Abstracts PARTEC International Congress on Particle Technology, September 26-28, 2023, N{\"u}rnberg}, publisher = {VDI Verlag GmbH}, address = {D{\"u}sseldorf}, pages = {634 -- 638}, language = {en} } @article{WieprechtStielerHeinzeetal., author = {Wieprecht, Wolfgang and Stieler, M. and Heinze, G. and M{\"o}ller, Detlev and Riebel, Ulrich and Hofmann, E. and Sparmann, A. and Kalaß, Dieter and Acker, Karin and Auel, Renate}, title = {Droplet concentrations (LWC) and its chemical composition after gas cleaning in the lignite firwed power plant J{\"a}nschwalde (FRG)}, language = {en} } @inproceedings{StepputatRiebelVora, author = {Stepputat, Jan and Riebel, Ulrich and Vora, Alpesh Laxman}, title = {Experimental study of charge transport in highly resistive single particle-particle contact and contact gap}, series = {Book of PARTEC 2016, International Congress on Particle Technology, April 19-21, 2016, N{\"u}rnberg, Germany}, booktitle = {Book of PARTEC 2016, International Congress on Particle Technology, April 19-21, 2016, N{\"u}rnberg, Germany}, publisher = {VDI Verlag}, address = {D{\"u}sseldorf}, isbn = {978-3-18-092283-6}, pages = {S. 379}, abstract = {Experimental study of charge transport in highly resistive single particle-particle contact and contact gap}, language = {en} } @inproceedings{AleksinRiebelKurtsiefer, author = {Aleksin, Yury and Riebel, Ulrich and Kurtsiefer, Stefan}, title = {A new approach for the electrostatic precipitation of highly resistive dusts}, series = {Book of PARTEC 2016, International Congress on Particle Technology, April 19-21, 2016, N{\"u}rnberg, Germany}, booktitle = {Book of PARTEC 2016, International Congress on Particle Technology, April 19-21, 2016, N{\"u}rnberg, Germany}, publisher = {VDI Verlag}, address = {D{\"u}sseldorf}, isbn = {978-3-18-092283-6}, pages = {S. 243}, abstract = {A new approach for the electrostatic precipitation of highly resistive dusts}, language = {en} } @inproceedings{VoraRiebel, author = {Vora, Alpesh Laxman and Riebel, Ulrich}, title = {Experimental study and numerical modelling of a microscopic level charge transport in highly resistive dust layers}, series = {Book of PARTEC 2016, International Congress on Particle Technology, April 19-21, 2016, N{\"u}rnberg, Germany}, booktitle = {Book of PARTEC 2016, International Congress on Particle Technology, April 19-21, 2016, N{\"u}rnberg, Germany}, publisher = {VDI Verlag}, address = {D{\"u}sseldorf}, isbn = {978-3-18-092283-6}, pages = {S. 579}, language = {en} } @misc{MedinaMendezBacherRiebeletal., author = {Medina M{\´e}ndez, Juan Ali and Bacher, Christian and Riebel, Ulrich and Schmidt, Heiko}, title = {Electrohydrodynamically-enhanced drag in a vertical pipe-flow with a concentric electrode: A One-Dimensional Turbulence study}, series = {European Journal of Mechanics. B,Fluids}, volume = {95}, journal = {European Journal of Mechanics. B,Fluids}, issn = {1873-7390}, doi = {10.1016/j.euromechflu.2022.05.008}, pages = {240 -- 251}, language = {en} } @misc{BacherRiebel, author = {Bacher, Christian and Riebel, Ulrich}, title = {Einfluss elektrohydrodynamischer Str{\"o}mung auf den W{\"a}rme und Stoff{\"u}bergang in Elektroabscheidern}, series = {ProcessNet 2018, Fachgruppe Gasreinigung}, journal = {ProcessNet 2018, Fachgruppe Gasreinigung}, pages = {1}, abstract = {Zur F{\"o}rderung einer nachhaltigeren Wertsch{\"o}pfungskette werden im Rahmen der Energiewende st{\"a}ndig neue Verfahren und Konzepte zu deren Umsetzung entwickelt. Eines dieser Konzepte befasst sich mit der Zusammenf{\"u}hrung bislang entkoppelter Prozessschritte in Gasreinigungssystemen aus der Energie- und Anlagentechnik. Aus den daraus resultierenden Einsparungen bei den Investitionskosten profitieren nicht nur die klassischen Energieerzeugeuer und Produktionsanlagen in der chemischen Industrie, sondern es werden auch neue Anreize zur dezentralen Energieeinspeisung von kleineren und mittelst{\"a}ndischen Unternehmen gesetzt. Unverzichtbarer Bestandteil dieser Gasreinigungssysteme sind h{\"a}ufig Elektroabscheider, welche weit verbreitet im Einsatz sind um Abgase von St{\"a}uben bzw. Aerosolen zu befreien, oder um Wertprodukte aus Gasstr{\"o}mungen abzuscheiden. Die in Elektroabscheidern prinzipbedingt vorhandenen elektro¬¬hydro¬dyna¬mischen Str{\"o}mungen sollen nun systematisch genutzt werden, um gleichzeitig Aufgaben des W{\"a}rme- und Stoffaustauschs zu l{\"o}sen. Zur Schaffung der notwendigen Auslegungsgrundlagen wurden deshalb qualitative und quantitative Untersuchungen zum Einfluss der elektrohydrodynamischen Str{\"o}mung auf Stoff- und W{\"a}rmetransport in Abh{\"a}ngigkeit von relevanten Betriebsparametern vorgenommen.}, language = {de} } @misc{LebedynskyyRiebelvanderZwaagetal., author = {Lebedynskyy, Volodymyr and Riebel, Ulrich and van der Zwaag, Till and Haep, Stefan and Kohnen, Boris}, title = {Energetische Optimierung von Elektroabscheidern. Industriebeispiel HKM Duisburg}, series = {Jahrestreffen der ProcessNet-Fachgruppen Mechanische Fl{\"u}ssigkeitsabtrennung und Gasreinigung, 14.-15. M{\"a}rz 2019, Bamberg}, journal = {Jahrestreffen der ProcessNet-Fachgruppen Mechanische Fl{\"u}ssigkeitsabtrennung und Gasreinigung, 14.-15. M{\"a}rz 2019, Bamberg}, pages = {1}, abstract = {Elektroabscheider bew{\"a}hren sich in Rauchgasreinigung als sehr robust und zuverl{\"a}ssig. Allerdings werden zahlreiche und nicht immer genau bekannte Parameter f{\"u}r eine sichere Auslegung von Elektroabscheidern ben{\"o}tigt. Eine nachtr{\"a}gliche Ver{\"a}nderung der Betriebsparameter kann zur Minderung der Zuverl{\"a}ssigkeit eines Elektroabscheiders f{\"u}hren. Das Rauchgas aus dem Stahlkonverter (HKM, Duisburg) wird in einem Nass-elektroabscheider von Partikeln befreit. Als HV-Elektroden kommen sog. „high emission electrodes" zum Einsatz. Diese weisen eine sehr geringe Corona-Einsatz-spannung auf und ersch{\"o}pfen die Leistungsreserven des HV-Trafos bereits bei mittleren Spannungen. Eine weitere Erh{\"o}hung der Spannung ist aufgrund der Strombegrenzung nicht m{\"o}glich. Eine zweistufige auf das Aerosol abgestimmte HV-Elektrode wird entwickelt und im Technikums-Maßstab ausprobiert. Diese erm{\"o}glicht eine {\"a}ußerst effiziente Nutzung des Corona-Stromes. Die Aufladung von Partikeln erfolgt damit fast ausschließlich im gequenchten Bereich, in dem die Gasionen ihre Ladung fast vollst{\"a}ndig auf die Aerosolpartikeln {\"u}bertragen. Eine deutlich h{\"o}here Betriebsspannung kann erreicht werden. Eine originale HKM Elektrode wird einer optimierten im Technikumsversuch gegen{\"u}bergestellt. Der Betriebspunkt (Spannung und Strom) des HKM Elektro-abscheiders wird durch die Ver{\"a}nderung der Aerosol-Anzahlkonzentration und Gr{\"o}ßenverteilung nachgebildet. Abscheideleistungen bei einer typischen Betriebs-spannung sowie bei der maximalen Trafo-Leistung von 205 W pro Abscheiderohr werden erfasst. Die Versuche werden durch eigene Simulationsrechnungen unterst{\"u}tzt. Die Simulationsergebnisse stimmen mit den Messergebnissen sehr gut {\"u}berein. Die optimierte Elektrode bringt folgende Vorteile gegen{\"u}ber der originalen Elektrode: a) 2/3 der Energie werden bei einer gleichen Abscheidung eingespart. b) 9-fache Verbesserung der Abscheidung bei einem gleichen Energieeintrag. Eine technische Umsetzung der gewonnenen Kenntnisse steht in Aussicht.}, language = {de} } @misc{MedinaMendezSchmidtRiebel, author = {Medina M{\´e}ndez, Juan Ali and Schmidt, Heiko and Riebel, Ulrich}, title = {Towards a One-Dimensional Turbulence Approach for Electrohydrodynamic Flows}, series = {11th International Symposium on Turbulence and Shear Flow Phenomena (TSFP11), Southampton, UK, July 30 to August 2, 2019}, journal = {11th International Symposium on Turbulence and Shear Flow Phenomena (TSFP11), Southampton, UK, July 30 to August 2, 2019}, pages = {6}, abstract = {The One-Dimensional Turbulence model is modified in this work for its application to a classical electrohydrodynamic (EHD) problem. Being the first study case, this work is focused on the influence of electrostatic fields and space charge on the velocity field inside a wire-plate Electrostatic Precipitator (ESP) with one-way-coupling dynamics. The study case is an attempt to replicate velocity profiles and Turbulent Kinetic Energy (TKE) budgets obtained in the Direct Numerical Simulation (DNS) carried out by Soldati and Banerjee (1998). Qualitative trends are confirmed in preliminary ODT results, thus showing the potential of the stochastic ODT modeling approach for other types of EHD flows.}, language = {en} } @misc{MedinaMendezSchmidtBacheretal., author = {Medina M{\´e}ndez, Juan Ali and Schmidt, Heiko and Bacher, Christian and Riebel, Ulrich}, title = {Electrohydrodynamic-enhanced internal pipe flows from a One-Dimensional Turbulence perspective}, series = {91st Annual Meeting of the International Association of Applied Mathematics and Mechanics (GAMM)}, volume = {20}, journal = {91st Annual Meeting of the International Association of Applied Mathematics and Mechanics (GAMM)}, number = {1}, publisher = {Wiley}, doi = {10.1002/pamm.202000132}, pages = {3}, language = {en} } @misc{MedinaMendezSchmidtRiebel, author = {Medina M{\´e}ndez, Juan Ali and Schmidt, Heiko and Riebel, Ulrich}, title = {Towards a One-Dimensional Turbulence Approach for Electrohydrodynamic Flows}, series = {11th International Symposium on Turbulence and Shear Flow Phenomena (TSFP11), Southampton, UK, July 30 to August 2, 2019}, journal = {11th International Symposium on Turbulence and Shear Flow Phenomena (TSFP11), Southampton, UK, July 30 to August 2, 2019}, pages = {1}, language = {en} } @inproceedings{LuebbertRiebel, author = {L{\"u}bbert, Christian and Riebel, Ulrich}, title = {Untersuchungen zu einem interferometrischen Streulichtmessverfahren zur Erfassung feinster Partikel}, abstract = {Vortrag auf VDI-GVC-Fachausschuss Partikelmesstechnik 2006, Clausthal-Zellerfeld}, language = {de} } @inproceedings{LuebbertRiebel, author = {L{\"u}bbert, Christian and Riebel, Ulrich}, title = {Corona-Quenching durch submikrone, hochkonzentrierte Aerosole im turbulenten Rohrelektroabscheider}, abstract = {Vortrag auf Jahrestreffen der Prozessnet-FA "Biokraftstoffe", "Gasreinigung" u. "Paretikelmesstechnik", 30.-31.03.2009, Frankfurt am. M.}, language = {de} } @inproceedings{BreitensteinRiebel, author = {Breitenstein, Marcus and Riebel, Ulrich}, title = {Transmissions-Fluktuations-Spektrometrie: M{\"o}glichkeiten und Perspektiven einer neuen Klasse von Partikelmessverfahren}, language = {de} } @article{FleckRiebel, author = {Fleck, Sabine and Riebel, Ulrich}, title = {Untersuchungen zum Einfluss der Art der Kollektoren auf Abscheidung Agglomeration von Verbrennungsaerosolen in einer Wirbelschicht}, language = {de} } @misc{BuergerRiebel, author = {B{\"u}rger, Patrick and Riebel, Ulrich}, title = {Feasibility of high-temperature electrostatic precipitation for the removal of nanoparticles: A case study on iron oxide separation at up to 800 ºC}, series = {Journal of Electrostatics}, volume = {120}, journal = {Journal of Electrostatics}, issn = {1873-5738}, doi = {10.1016/j.elstat.2022.103754}, abstract = {The removal of nanoparticles from hot gas streams is a challenging task. However, there is a huge potential for heat recovery from waste gas incineration, glass furnaces, ceramic, metallurgical, pyrolytic and many other high temperature processes. A prototype application is the separation of nanoparticles formed by condensation in thermal post-combustion processes, in order to achieve efficient heat recovery at high temperatures. This case study evaluates the performance of a high-temperature electrostatic precipitator (HT-ESP) between 400 and 800 ºC for both discharge polarities. The tube-type ESP with 150 mm diameter and 1500 mm length is operated isothermally. Two electrode designs are tested by separating flame-generated iron oxide nanoparticles from a flue gas atmosphere. The total number concentration in the raw gas is around 2*107 cm-3 with a temperature-dependent mode diameter of 20-40 nm. Between 400 and 600 ºC very high separation efficiencies around 99.998\% (number-based) were found with just 1.5 s of residence time and negative polarity, using a wire discharge electrode. In fact, the separation is more efficient than at room temperature which is explained by particle charging with free electrons leading to an exceptionally high particle charge. At 700 ºC and 800 ºC, thermionic emissions become more relevant for ESP operation. In this range the best separation efficiencies of 99.96\% and 99.5\% respectively were obtained using a rod discharge electrode operated below the corona onset voltage. The specific input of energy required for 99\% separation efficiency at any temperature is less than 250 J/m3. These findings clearly prove that HT-ESPs are a feasible and highly performing alternative for nanoparticle removal from hot gases at up to 800 ºC.}, language = {en} } @inproceedings{LuebbertRiebel, author = {L{\"u}bbert, Christian and Riebel, Ulrich}, title = {Modelle zu Beschreibung Staubabscheidung im Rohr-Draht-Elektroabscheider bei hohen teilchengebundenen Raumladungsdichten}, language = {de} } @inproceedings{LuebbertRiebel, author = {L{\"u}bbert, Christian and Riebel, Ulrich}, title = {Electrostatic Precipitator Operation at Corona Quenching Conditions - Theory, Simulation and Experiments}, language = {en} } @inproceedings{LeubnerMnichRiebel, author = {Leubner, Holger and Mnich, Robert and Riebel, Ulrich}, title = {Entfernung von sauren Gasen durch Chemisorption in einer Precoatschicht}, abstract = {Vortrag auf GVC-Fachausschusssitzung "Gasreinigung", Karlsruhe, 16.-17. Februar 2004}, language = {de} } @inproceedings{MnichPertikRiebel, author = {Mnich, Robert and Pertik, Tim and Riebel, Ulrich}, title = {Biologisch-Elektrische Gasreinigung (BEGA)t}, language = {de} } @article{StommelRiebel, author = {Stommel, Yves-Gorat and Riebel, Ulrich}, title = {Corona-Neutralisation}, language = {de} } @inproceedings{MnichLeubnerRiebel, author = {Mnich, Robert and Leubner, Holger and Riebel, Ulrich}, title = {Gleichzeitige Abscheidung von St{\"a}uben und sauren Gasen (HCl, SO2) an Alpha-FilterkerzenGleichzeitige Abscheidung von St{\"a}uben und sauren Gasen (HCl, SO2) an Alpha-Filterkerzen}, language = {de} } @inproceedings{GuoRiebel, author = {Guo, Xiaoai and Riebel, Ulrich}, title = {Particle size analysis by transmission fluctuation auto-correlation spectrometry}, abstract = {Vortrag auf GVC-Fachausschusssitzung "Partikelmesstechnik", Braunschweig, 29.-30. M{\"a}rz 2004}, language = {de} } @article{StommelRiebel, author = {Stommel, Yves-Gorat and Riebel, Ulrich}, title = {Aerosolneutralisation auf Basis von Corona-Entladung}, series = {Chemie - Ingenieur - Technik}, volume = {76}, journal = {Chemie - Ingenieur - Technik}, number = {10}, issn = {0009-286X}, pages = {1512 -- 1516}, language = {de} } @inproceedings{LuebbertRiebel, author = {L{\"u}bbert, Christian and Riebel, Ulrich}, title = {Cleaning of Problem Aerosols: Modeling of Electrostatic Precipitator Operation with Corona Quenching}, series = {Partec 2013 Conference, April 23rd - 25th, 2012 N{\"u}rnberg Messe}, booktitle = {Partec 2013 Conference, April 23rd - 25th, 2012 N{\"u}rnberg Messe}, language = {en} } @incollection{Riebel, author = {Riebel, Ulrich}, title = {Abgasreinigung im Umfeld der Energiewende - neue Aufgaben f{\"u}r den Elektroabscheider?}, series = {Kraftwerkstechnik 2016 : Strategien, Anlagentechnik und Betrieb}, booktitle = {Kraftwerkstechnik 2016 : Strategien, Anlagentechnik und Betrieb}, editor = {Beckmann, Michael and Hurtado, Antonio}, publisher = {SAXONIA}, address = {Freiberg}, isbn = {978-3-934409-69-9}, pages = {623 -- 631}, abstract = {Abgasreinigung im Umfeld der Energiewende - neue Aufgaben f{\"u}r den Elektroabscheider}, language = {de} } @inproceedings{StommelRiebel, author = {Stommel, Yves-Gorat and Riebel, Ulrich}, title = {Regelung eines auf Corona-Entladung basierten Aerosolneutralisators f{\"u}r die Anwendung in SMPS-Systemen}, abstract = {Vortrag auf VDI-GVC-Fachausschuss Partikelmesstechnik 2006, Clausthal-Zellerfeld.}, language = {de} } @inproceedings{MnichRiebel, author = {Mnich, Robert and Riebel, Ulrich}, title = {Verbesserung der Quervermischung in einem biologisch-elektrischen Geruchsabscheider durch den elektrischen Wind}, abstract = {Vortrag auf VDI-GVC-Fachausschuss Gasreinigung 2006, W{\"u}rzburg.}, language = {de} } @inproceedings{StommelRiebel, author = {Stommel, Yves-Gorat and Riebel, Ulrich}, title = {Simulation der Partikelaufladung und -bewegung in einem Aerosolraum}, abstract = {Vortrag auf VDI-GVC-Fachausschuss Gasreinigung 2006, W{\"u}rzburg.}, language = {de} } @inproceedings{MnichRiebel, author = {Mnich, Robert and Riebel, Ulrich}, title = {Abscheidung von organischen Komponenten im Elektroabscheider durch Ozonolyse}, language = {de} } @misc{BuergerRiebel, author = {B{\"u}rger, Patrick and Riebel, Ulrich}, title = {Electrostatic charging and precipitation of nanoparticles in technical nitrogen: Highly efficient diffusion charging by hot free electrons}, series = {Journal of Aerosol Science}, journal = {Journal of Aerosol Science}, number = {141}, issn = {1879-1964}, doi = {10.1016/j.jaerosci.2019.105495}, pages = {17}, abstract = {Electrostatic charging and deposition of a liquid nano-aerosol was studied in dry air and in technical (3.6 \% O2) nitrogen. The experiments have shown that electronic charging of aerosols can be important in technical scale electrostatic precipitators (ESPs). Already at operation voltages just slightly above the corona onset voltage, the contribution of the free electrons to the overall current is estimated to be around 50 \%. Due to the high temperature of free electrons, diffusion charging by free electrons allows to reach exceptionally high particle charge and extremely high precipitation efficiency. A strongly simplified theoretical model was developed, which gives a good prediction of particle charge based on averaged values of particle diameter, current density, electric field strength, electron temperature and residence time. The ion mobilities were determined by fitting the current-voltage characteristics with a modified Townsend (Monrolin et al. 2018) equation and are significantly higher than the values typically used to describe diffusion charging in air. This may be ascribed to the very dry gas phase and the short average lifespan of the ions under ESP conditions, which is in the order of 1 ms. From the practical point of view, electronic charging might be relevant in a number of technical applications, including high temperature ESPs, ESP applications in dry and oxygen-free gases and pulsed corona systems.}, language = {en} } @misc{MoralesHenriquesRiebelZavarceetal., author = {Morales Henr{\´i}ques, Carlos Javier and Riebel, Ulrich and Zavarce, L. and Guzm{\´a}n, N. M.}, title = {Improving emulsion separation: the collector material concept}, language = {en} } @misc{MoralesHenriquesRiebelPadronetal., author = {Morales Henr{\´i}ques, Carlos Javier and Riebel, Ulrich and Padr{\´o}n, Alida and Zuniga, Percy and Sorrentino, Jos{\´e}}, title = {Use of Video Enhanced Microscopy for Characterization of Solid-Liquid-Liquid Mixtures}, language = {en} } @incollection{GuoRiebelGellertetal., author = {Guo, Xiaoai and Riebel, Ulrich and Gellert, Marcus and Egbers, Christoph}, title = {Experimental Investigation of Multiphase Flow Structure behind a Bluff Body by LDV and TFS Technique}, language = {en} } @inproceedings{ZanounEgbersGuoetal., author = {Zanoun, El-Sayed and Egbers, Christoph and Guo, Xiaoai and Riebel, Ulrich}, title = {Experimental and Numerical Investigations of Isothermal Fluid-Particle Flows in Vertical Cuvette}, language = {en} } @misc{VoraStepputatRiebel, author = {Vora, Alpesh Laxman and Stepputat, Jan and Riebel, Ulrich}, title = {Force and current in a contact gap between single highly resistive, particles: experimental observations}, series = {Journal of Physics Communications}, volume = {3}, journal = {Journal of Physics Communications}, number = {9}, issn = {2399-6528}, doi = {10.1088/2399-6528/ab3e2b}, pages = {20}, abstract = {In case of electrical conduction through highly resistive dust layers, the generation of electrostatic adhesion force is strongly coupled to the mechanism of electrical (current) transport in the solid. High field strengths lead to a significant increase of the adhesive force. Here, more insight into the underlying mechanisms is given by experiments on the microscopic scale. An experimental arrangement is described which allows to study a particle pair subject to a strong electric field. Both the current and the force between the particles (150 μm) can be measured as a function of voltage and gap distance. The results show an extremely complex behaviour of the contact for the case of highly resistive particles. For current transport, both gas discharges and thermionic field emission are observed, depending on the width of the contact gap and the field strength. For both the force and the current across the gap, a strongly non-linear behaviour with pronounced time effects is observed.}, language = {en} } @incollection{RiebelKraeuter, author = {Riebel, Ulrich and Kr{\"a}uter, Udo}, title = {Ultrasonic Extinction and Velocity in Dense Suspensions}, isbn = {1-57498-034-3}, language = {en} } @incollection{KhatchikianRiebelGutschetal., author = {Khatchikian, Peter and Riebel, Ulrich and Gutsch, Andreas and Riemenschneider, H.}, title = {On-line Analysis of Mass Flow of Nanoscaled Metaloxides}, isbn = {0-8169-9859-0}, language = {en} } @inproceedings{GuoRiebel, author = {Guo, Xiaoai and Riebel, Ulrich}, title = {Transmission Fluctuation Correlation Spectrometry for Measuring Particle Suspension and Flow Structures}, language = {en} } @misc{BacherRiebelLebedynskyyetal., author = {Bacher, Christian and Riebel, Ulrich and Lebedynskyy, Volodymyr and Fischer, Silvio}, title = {Discharge electrode geometries and energy efficiency in one-stage electrostatic precipitators at high aerosol concentration}, series = {ICESP 2018, Charlotte, USA, 9-11 October 2018}, journal = {ICESP 2018, Charlotte, USA, 9-11 October 2018}, pages = {7}, abstract = {In order to help answering the question "Which electrode design is the best?", the precipitation performance of a tubular ESP was determined for different electrode designs with special attention to specific energy consumption. Experiments were conducted in a wire-tube arrangement with a high loading of liquid submicron particles. The experiments are supplemented by numerical simulation results showing the effect of residence time and power consumption on separation efficiency. By combining the own experimental results with seemingly contradicting statements of the literature, the authors provide also some general guidelines for discharge electrode design when designing or upgrading electrostatic precipitator plants.}, language = {en} } @inproceedings{ShenRiebelGuo, author = {Shen, Jianqi and Riebel, Ulrich and Guo, Xiaoai}, title = {Transmission Fluctuation Spectrometry with Spatial Correlation}, language = {en} } @inproceedings{ShenRiebelGuo, author = {Shen, Jianqi and Riebel, Ulrich and Guo, Xiaoai}, title = {Transmission Fluctuation Spectrometry in Concentrated Suspensions: Particle-Particle Interaction}, language = {en} } @misc{BinShenXuetal., author = {Bin, Yu and Shen, Jianqi and Xu, Yamin and Riebel, Ulrich and Guo, Xiaoai}, title = {Mesurements on Particle Size Distribution and Concentration by Transmission Fluctuation Spectrometry with Temporal Correlation (TFS-TC).}, doi = {10.1002/ppsc.200701128}, language = {en} } @misc{ShenYuRiebeletal., author = {Shen, Jianqi and Yu, Bin and Riebel, Ulrich and Xu, Yamin and Liu, Lei and Guo, Xiaoai}, title = {Fundamentals of Particle Size Analysis by Fluctuating Transmission Autocorrelation with an Extremely Narrow Beam}, doi = {10.1016/j.measurement.2006.11.021}, language = {en} } @article{GuoRiebel, author = {Guo, Xiaoai and Riebel, Ulrich}, title = {Suspension Structure Effects on Transmission Fluctuation Spectrometry with Autocorrelation: Theoretical Prediction, Numerical Simulation and Experimental Verification}, language = {en} } @article{XuShenCaietal., author = {Xu, Yamin and Shen, Jianqi and Cai, Xiaoshu and Riebel, Ulrich and Guo, Xiaoai}, title = {Particle size analysis by transmission fluctuation spectrometry with band-pass filters}, abstract = {particle size analysis transmission filter}, language = {en} } @article{SommelRiebel, author = {Sommel, Yves-Gorat and Riebel, Ulrich}, title = {Comment on the Calculation of the Steady-State Charge Distribution on Aerosols <100 nm by Three Body Trapping Method in a Bipolar Ion Environment}, language = {en} } @article{StommelKirchhoffRiebel, author = {Stommel, Yves-Gorat and Kirchhoff, Matthias and Riebel, Ulrich}, title = {Experimental results on the influence of concentrated liquid aerosols on the onset voltage of corona discharge}, language = {en} } @article{GuoRiebel, author = {Guo, Xiaoai and Riebel, Ulrich}, title = {Theoretical direct correlation function for two- dimensional fluids of monodisperse hard spheres}, language = {en} } @article{ShenRiebel, author = {Shen, Jianqi and Riebel, Ulrich}, title = {Scattering and Transmission by a Monolayer of Spheres: A Study on the Monolayer Structure}, language = {en} } @article{ShenGuoRiebel, author = {Shen, Jianqi and Guo, Xiaoai and Riebel, Ulrich}, title = {Measurements of particle-size distribution and concentration by transmission fluctuation spectrometry with temporal correlation}, language = {en} } @article{StommelRiebel, author = {Stommel, Yves-Gorat and Riebel, Ulrich}, title = {A new corona discharge-based aerosol charger for submicron particles with low initial charge}, language = {en} } @article{ShenRiebel, author = {Shen, Jianqi and Riebel, Ulrich}, title = {Transmission fluctuation spectrometry in concentrated suspensions. Part one, Effects of the monolayer structure}, language = {en} } @article{ShenRiebel, author = {Shen, Jianqi and Riebel, Ulrich}, title = {Transmission fluctuation spectrometry in concentrated suspensions. Part two, Particle overlapping}, language = {en} } @article{ShenRiebel, author = {Shen, Jianqi and Riebel, Ulrich}, title = {Transmission Fluctuation Spectrometry in Concentrated Suspensions. Part Three: Measurements}, language = {en} } @article{ShenRiebel, author = {Shen, Jianqi and Riebel, Ulrich}, title = {Particle Size Analysis by Transmission Fluctuation Spectrometry: Experimental Results obtained with a Gaussian Beam and Analog Signal Processing}, language = {en} } @article{LeubnerRiebel, author = {Leubner, Holger and Riebel, Ulrich}, title = {Pulse Jet Cleaning of Textile and Rigid Filter Media - Characteristic Parameters}, language = {en} } @article{ShenRiebelBreitenstein, author = {Shen, Jianqi and Riebel, Ulrich and Breitenstein, Marcus}, title = {Fundamentals of Transmission Fluctuation Spectrometry with Variable Spatial Averaging}, language = {en} } @article{LeubnerRiebel, author = {Leubner, Holger and Riebel, Ulrich}, title = {Empirische Untersuchungen zum instabilen Filterbetrieb}, language = {en} } @article{ShenRiebel, author = {Shen, Jianqi and Riebel, Ulrich}, title = {The Fundamentals of Particle Size Analysis by Transmission Fluctuation Spectrometry. Part 3: A Theory on Transmission Fluctuations in a Gaussian Beam and with Signal Filtering}, language = {en} } @article{LeubnerRiebel, author = {Leubner, Holger and Riebel, Ulrich}, title = {Influence of a Cross Flow over the Filter Medium on the Cake Structure}, language = {en} } @article{RiebelRadtkeLoos, author = {Riebel, Ulrich and Radtke, R. and Loos, R.}, title = {An Experimental Investigation on Corona Quenching}, language = {en} } @article{BreitensteinRiebelShen, author = {Breitenstein, Marcus and Riebel, Ulrich and Shen, Jianqi}, title = {The Fundamentals of Particle Size Analysis by Transmission Fluctuation Spectrometry. Part 2: A Theory on Transmission Fluctuations with Combined Spatial and Temporal Averaging}, language = {en} } @article{BreitensteinKraeuterRiebel, author = {Breitenstein, Marcus and Kr{\"a}uter, Udo and Riebel, Ulrich}, title = {The Fundamentals of Particle Size Analysis by Transmission Fluctuation Spectrometry. Part 1: A Theory of Temporal Transmission Fluctuations in Dilute Suspensions}, language = {en} } @article{FleckRiebel, author = {Fleck, Sabine and Riebel, Ulrich}, title = {Influence of Fluid Dynamics on Collection and Agglomeration of Aerosols in a Fluidized Bed}, issn = {0930-7516}, language = {en} } @article{KhatchikianRiebelKraeuter, author = {Khatchikian, Peter and Riebel, Ulrich and Kr{\"a}uter, Udo}, title = {Phase Velocity of Ultrasound in Suspensions of Large Particles}, issn = {1436-7947}, language = {en} } @article{RiebelKraeuter, author = {Riebel, Ulrich and Kr{\"a}uter, Udo}, title = {Extinction of Radiations in Sterically Interacting Systems of Monodisperse Spheres - Part. 1: Theory}, language = {en} } @article{ShenRiebel, author = {Shen, Jianqi and Riebel, Ulrich}, title = {Extinction by a Large Spherical Particle Located in a Narrow Gaussian Beam}, language = {en} } @article{KhatchikianRiebelKraeuter, author = {Khatchikian, Peter and Riebel, Ulrich and Kr{\"a}uter, Udo}, title = {Ultrasonic Particle Sizing - a Survey}, language = {en} } @article{Riebel, author = {Riebel, Ulrich}, title = {Ultrasonic Sensors for Chemical and Process Plant - a Book Review}, language = {en} } @article{Riebel, author = {Riebel, Ulrich}, title = {An Experiment on Averaging in Extinction Measurements}, language = {en} } @article{KraeuterRiebel, author = {Kr{\"a}uter, Udo and Riebel, Ulrich}, title = {Extinction of Radiations in Sterically Interacting Systems of Monodisperse Spheres - Part 2: Experimental Results}, language = {en} } @misc{BacherLebedynskyyRiebeletal., author = {Bacher, Christian and Lebedynskyy, Volodymyr and Riebel, Ulrich and Fischer, Silvio}, title = {Electrode Shape and Efficiency in wet wire-tube Electrostatic Precipitators at high aerosol concentration}, language = {en} } @misc{BuergerRiebel, author = {B{\"u}rger, Patrick and Riebel, Ulrich}, title = {Effiziente Hochtemperatur-Gasreinigung mittels Elektroabscheider: Zuk{\"u}nftige Anwendungsgebiete zur Wertstoffr{\"u}ckgewinnung und optimierten W{\"a}rme{\"u}bertragung}, series = {Chemie Ingenieur Technik}, volume = {96}, journal = {Chemie Ingenieur Technik}, number = {3}, issn = {0009-286X}, doi = {10.1002/cite.202300153}, pages = {340 -- 346}, abstract = {High-temperature gas cleaning is a challenge, especially when nanoparticles have to be separated from a hot gas stream. Thus, particle separation is often conducted after quenching the gas stream significantly. However, high-temperature particle removal can substantially improve heat recovery in many existing industrial processes, as well as in upcoming pyrolytic processes and the flame-based manufacturing of functional nanoparticles. This contribution describes the experimental results from a pilot-scale high-temperature electrostatic precipitator tasked with the removal of nanoparticles from a flue gas atmosphere between 400-800 °C. Additionally, the underlying phenomena are explained, and the future applications are outlined. Over the whole temperature range a reliable and energy-efficient particle separation was observed. This technology combined with a high-temperature heat exchanger can strongly reduce the primary energy consumption of high-temperature processes.}, language = {de} }