Experimental investigations of pyrolysis and char conversion kinetics in a well-stirred reactor under atmospheric and pressurised conditions

Go to project

Experimental investigations of pyrolysis and char conversion kinetics in plug flow configurations with a focus on the ignition and early char burnout phase

Go to project

Experimental determination of reaction kinetics for the release of chlorine and sulphur species and for the conversion of these species in the gas phase

  • Frigge, L., Elserafi, G., Ströhle, J. and Epple, B., Sulfur and Chlorine Gas Species Formation during Coal Pyrolysis in Nitrogen and Carbon Dioxide Atmosphere, Energy & Fuels, 30 (9): 7713-7720, 2016.

  • von Bohnstein, M., Langen, J., Frigge, L., Stroh, A., Ströhle, J. and Epple, B., Comparison of CFD Simulations with Measurements of Gaseous Sulfur Species Concentrations in a Pulverized Coal Fired 1 MWth Furnace, Energy & Fuels, 30 (11): 9836-9849, 2016.

  • Frigge, L., Ströhle, J. and Epple, B., Release of sulfur and chlorine gas species during coal combustion and pyrolysis in an entrained flow reactor, Fuel, 201: 105-110, 2017.

  • Frigge, L., Ströhle, J. and Epple, B., Modification of a model for sulfur release during coal pyrolysis to account for oxy-fuel conditions, 2nd International Workshop on Oxy-fuel Combustion, 2018.

  • Debiagi, P., Yildiz, C., Ströhle, J., Epple, B., Faravelli, T. and Hasse, C., Validation of a comprehensive kinetic mechanism for sulfur release during pyrolysis of solid fuels, 9th International Symposium on Coal Combustion, Qingdao, China, 2019.

  • Debiagi, P., Yildiz, C., Richter, M., Ströhle, J., Epple, B., Faravelli, T. and Hasse, C., Experimental and modeling assessment of sulfur release from coal under low and high heating rates, Proceedings of the Combustion Institute, 2020.

  • von Bohnstein, M., Yildiz, C., Frigge, L., Ströhle, J. and Epple, B., Simulation study of the formation of corrosive gases in coal combustion in an entrained flow reactor, Energies, 13 (17): 4523, 2020.

  • Schmidt, D., Yildiz, C., Ströhle, J. and Epple, B., Release of nitrogen, sulfur and chlorine species from coal in carbon dioxide atmosphere, Fuel, 284: 119279, 2021.

  • Schmidt, D., Yildiz, C., Ströhle, J. and Epple, B., Experimental Assessment of the Release of Nitrogen, Sulfur and Chlorine Species During Pyrolysis of Coal and Biomass in CO2 Atmosphere, 3rd International Workshop on Oxy-Fuel Combustion, 2020.

  • Ontyd, C., Pielsticker, S., Yildiz, C., Schiemann, M., Hatzfeld, O., Ströhle, J., Epple, B., Kneer, R. and Scherer, V., Experimental determination of walnut shell pyrolysis kinetics in N2 and CO2 via thermogravimetric analysis, fluidized bed and drop tube reactors, Fuel: 119313, 2020.

  • Frigge, L., Ströhle, J. and Epple, B., Sulfur and Chlorine Gas Species Formation during Temperature-Programmed Coal Air- and Oxy-fuel Combustion, 13th International Conference on Energy for a Clean Environment, 2017.

  • Debiagi, P., Yildiz, C., Ströhle, J., Epple, B., Faravelli, T. and Hasse, C., Systematic evaluation and kinetic modeling of low heating rate sulfur release in pyrolysis and oxidation in various atmospheres, 3rd International Workshop on Oxy-Fuel Combustion, Montabaur, Germany, 2020.

  • Frigge, L., Wütscher, A., Lotz, K., Yildiz, C., Ströhle, J., Muhler, M. and Epple, B., Sulfur and Chlorine Gas Species Formation during Temperature-Programmed Air and Oxy-fuel Combustion of Coal, Energies: (submitted), 2020.

  • Debiagi, P., Yildiz, C., Ströhle, J., Epple, B., Faravelli, T. and Hasse, C., Systematic evaluation and kinetic modeling of low heating rate sulfur release in various atmospheres, Fuel, 289: 119739, 2021.

Go to project

Kinetic investigations of the effect of catalytically active minerals in biomass-derived solid fuels on pyrolysis and char conversion under oxy-fuel conditions

  • Düdder, H., Wütscher, A., Stoll, R. and Muhler, M., Synthesis and characterization of lignite-like fuels obtained by hydrothermal carbonization of cellulose, Fuel (171): 54-58, 2016.

  • Düdder, H., Wütscher, A. and Muhler, M., Catalytic influence of minerals on the combustion behavior of a cellulose-derived solid fuel, 48. Jahrestreffen Deutscher Katalytiker, Weimar, Germany, 2015.

  • Wütscher, A., Düdder, H. and Muhler, M., Synthetic Lignite-like Fuel for Oxy-fuel Combustion, 49. Jahrestreffen Deutscher Katalytiker, Weimar, Germany, 2016.

  • Düdder, H., Wütscher, A., Vorobiev, N., Schiemann, M., Scherer, V. and Muhler, M., Oxidation characteristics of a cellulose-derived hydrochar in thermogravimetric and laminar flow burner experiments, Fuel Processing Technology, 148: 85-90, 2016. doi 

  • Heuer, S., Senneca, O., Wütscher, A., Düdder, H., Schiemann, M., Muhler, M. and Scherer, V., Effects of oxy-fuel conditions on the products of pyrolysis in a drop tube reactor, Fuel Processing Technology, 150: 41-49, 2016. doi 

  • Düdder, H., Lotz, K., Wütscher, A. and Muhler, M., The influence of iron oxide on the oxidation kinetics of synthetic char derived from thermogravimetric analysis and fixed-bed experiments under isothermal and temperature-programmed conditions, Fuel, 201: 99-104, 2017.

  • Wütscher, A., Wedler, C., Seibel, C., Hiltrop, D., Fieback, T., Muhler, M. and Span, R., On the alternating physicochemical characteristics of Colombian coal during pyrolysis, Journal of Analytical and Applied Pyrolysis, 123: 12-19, 2017.

  • Senneca, O., Vorobiev, N., Wütscher, A., Cerciello, F., Heuer, S., Wedler, C., Span, R., Schiemann, M., Muhler, M. and Scherer, V., Assessment of combustion rates of coal chars for oxy-combustion applications, 2nd International Workshop on Oxy-fuel Combustion, Bochum, Germany, 2018.

  • Wütscher, A, Apicella, B, Russo, C, Stanzione, F, Ciajolo, A, Heuer, S, Scherer, V, Muhler, M and Senneca, O, Characterization of tar produced from walnut shells pyrolysis, 40th Meeting of the Italian Section of the Combustion Institute, Rome, 2017.

  • Graeser, P., Wütscher, A., Cerciello, F., Muhler, M. and Schiemann, M., Emissivity Comparison between Chars and Demineralized Coal Chars under Oxycombustion Conditions, Chemical Engineering & Technology, 41 (7): 1490-1496, 2018.

  • Senneca, O., Vorobiev, N., Wütscher, A., Cerciello, F., Heuer, S., Wedler, C., Span, R., Schiemann, M., Muhler, M. and Scherer, V., Assessment of combustion rates of coal chars for oxy-combustion applications, Fuel, 238: 173-185, 2019.

  • Lotz, K., Wütscher, A., Eckhard, T. and Muhler, M., The impact of mineral matter on the evolved pyrolysis gases, 2nd International Workshop on Oxy-fuel Combustion, 2018.

  • Düdder, H., Wütscher, A. and Muhler, M., Kinetic analysis of temperature-programmed and isothermal hydrochar oxidation experiments, European Symposium on Chemical Reaction Engineering, Fürstenfeldbruck, Germany, 2015.

  • Wütscher, A., Eckhard, T., Hiltrop, D., Lotz, K., Schuhmann, W., Andronescu, C. and Muhler, M., Nitrogen-Doped Metal-Free Carbon Materials Derived from Cellulose as Electrocatalysts for the Oxygen Reduction Reaction, ChemElectroChem, 1: 16064, 2018.

  • Wütscher, A., Düdder, H. and Muhler, M., Detailed Investigations on Particle Related Effects in Oxy-Fuel Coal Combustion: Pyrolysis, Char Burnout and Release of Sulphur and Chlorine Components, 1st International Workshop on Oxy-Fuel Combustion, 2016.

  • Senneca, O., Apicella, B., Russo, C., Cerciello, F., Salatino, P., Heuer, S., Wütscher, A., Schiemann, M., Muhler, M. and Scherer, V., Pyrolysis and Thermal Annealing of Coal and Biomass in CO2-Rich Atmospheres, Energy & Fuels, 32 (10): 10701-10708, 2018.

  • Lotz, K., Berger, C. M. and Muhler, M., Catalytic effect of iron phases on the oxidation of cellulose-derived synthetic char, Energy Procedia, 158: 694-699, 2019.

  • Lotz, K., Wütscher, A., Düdder, H., Berger, C. M., Russo, C., Mukherjee, K., Schwaab, G., Havenith, M. and Muhler, M., Tuning the Properties of Iron-Doped Porous Graphitic Carbon Synthesized by Hydrothermal Carbonization of Cellulose and Subsequent Pyrolysis, ACS Omega, 4 (2): 4448-4460, 2019.

  • Eckhard, T., Lotz, K., Pflieger, C., Vorobiev, N., Valentiner, S., Scherer, V. and Muhler, M., Hydrothermal carbonisierte mikrokristalline Cellulose als aschefreier Modellbrennstoff für Flachflammenbrenner, 29. Deutscher Flammentag, 2019.

  • Eckhard, T., Pyrolysis-GC/MS-GC/TCD: Analysis of broad product distributions evolving during coal pyrolysis, Pyrolysis GC-MS User Meeting, 2019.

  • Eckhard, T., Valentiner, S., Pflieger, C., Lotz, K., Schiemann, M., Scherer, V. and Muhler, M., The Catalytic Influence of Doped Metals on the Pyrolysis Product Distribution and Resulting Chars of Hydrothermally Derived Model Fuels, 3rd International Workshop on Oxy-Fuel Combustion, 2020.

  • Pflieger, C., Lotz, K., Hilse, N., Berger, C. M., Schiemann, M., Debiagi, P., Hasse, C., Scherer, V., Muhler, M. and Debiagi, P., Catalytic Influence of Mineral Compounds on the Reactivity of Cellulose-Derived Char in O2-, CO2-, and H2O-Containing Atmospheres, Fuel, 2020.

  • Eckhard, T., Wütscher, A. and Muhler, M., Simultaneous analysis of light gases and heavy pyrolyzates evolved from lignite and hard coal by pyrolysis–GC/MS–GC/TCD, Journal of Analytical and Applied Pyrolysis, 149: 104833, 2020.

  • Pflieger, C., Lotz, K., Eckhard, T. and Muhler, M., Reactivity of mineral-free and doped synthetic chars in O2-, CO2-, and H2O-containing atmospheres, 3rd International Workshop on Oxy-Fuel Combustion, 2020.

  • Senneca, O., Cerciello, F., Russo, C., Wütscher, A., Muhler, M. and Apicella, B., Thermal treatment of lignin, cellulose and hemicellulose in nitrogen and carbon dioxide, Fuel, 271: 117656, 2020.

  • Wedler, C., Lotz, K., Arami-Niya, A., Xiao, G., Span, R., Muhler, M., May, E. F. and Richter, M., Influence of Mineral Composition of Chars Derived by Hydrothermal Carbonization on Sorption Behavior of CO2, CH4, and O2, ACS Omega, 2020.

  • Apicella, B., Russo, C., Ciajolo, A., Cortese, L., Cerciello, F., Stanzione, F., Wütscher, A., Muhler, M. and Senneca, O., High temperature pyrolysis of lignite and synthetic carbons, Fuel, 241: 264-272, 2019.

  • Kreitzberg, T., Eckhard, T., Pielsticker, S., Muhler, M. and Kneer, R., Änderung von Struktur und Reaktivität durch Pyrolyse fester Brennstoffe, 29. Deutscher Flammentag, 2019.

  • Cerciello, F., Apicella, B., Russo, C., Cortese, L. and Senneca, O., Effects of pressure on lignocellulosic biomass fast pyrolysis in nitrogen and carbon dioxide, Fuel: 119604, 2020.

  • Eckhard, T., Pflieger, C., Schmidt, S., Böttger, J., Senneca, O., Schiemann, M., Scherer, V., Muhler, M. and Cerciello, F., Catalytic effects for cellulose-based model fuels under low and high heating rate in air and oxy-fuel atmosphere, Fuel, 324: 124437, 2022.

  • Pflieger, C., Eckhard, T., Böttger, J., Cerciello, F. and Muhler, M., Catalytic influence of minerals on cellulose-based model fuels and model chars in oxidation and gasification, 30. Deutscher Flammentag, 2021.

  • Böttger, J., Eckhard, T., Pflieger, C., Senneca, O., Muhler, M. and Cerciello, F., Green coal substitutes for boilers through hydrothermal carbonization of biomass, 13th European Conference on Industrial Furnaces and Boilers, 2022.

  • Böttger, J., Eckhard, T., Pflieger, C., Muhler, M. and Cerciello, F., Hydrothermal carbonization of biomass: influence of cellulose, hemicellulose and lignin, 23rd edition of the International Conference on Analytical and Applied Pyrolysis, 2022.

  • Eckhard, T., Lotz, K., Wütscher, A., Berger, C. M. and Muhler, M., Kinetic investigations on catalytic properties of mineral matter in oxy-fuel combustion, 2nd International Workshop on Oxy-fuel Combustion, 2018.

  • Eckhard, T., Pflieger, C., Russo, C., Böttger, J., Senneca, O., Apicella, B., Schiemann, M., Scherer, V., Muhler, M. and Cerciello, F., Mineral effects on chemical and physical transformations of cellulose-based model fuels in N2 and CO2 atmospheres, 23rd edition of the International Conference on Analytical and Applied Pyrolysis, 2022.

  • Eckhard, T., Pflieger, C., Russo, C., Böttger, J., Senneca, O., Apicella, B., Schiemann, M., Scherer, V., Muhler, M. and Cerciello, F., Mineral effects on chemical and physical transformations of cellulose-based model fuels in N2 and CO2 atmospheres, 13th European Conference on Industrial Furnaces and Boilers, 2022.

  • Frigge, L., Wütscher, A., Lotz, K., Yildiz, C., Ströhle, J., Muhler, M. and Epple, B., Sulfur and Chlorine Gas Species Formation during Temperature-Programmed Air and Oxy-fuel Combustion of Coal, Energies: (submitted), 2020.

  • Pflieger, C., Eckhard, T., Böttger, J., Telaar, P., Schulwitz, J., Schmidt, S., Cerciello, F. and Muhler, M., The catalytic effect of iron on the oxidation of cellulose-derived chars, 55. Jahrestreffen Deutscher Katalytiker, 2022.

  • Lotz, K., Wütscher, A. and Muhler, M., The influence of iron oxide on the oxidation kinetics of synthetic char, 50.~Jahrestreffen Deutscher Katalytiker, 2017.

Go to project

Determination of excess-sorptive kinetics and equilibrium loadings of oxy-fuel gas components on solid fuels

  • Fieback, T. and Span, R., High Temperature Sorption Measurements for Determining Surface Effects of Solid Fuels, Energy Procedia, 61: 1501-1504, 2014.

  • Seibel, C. and Fieback, T., New sample carrier systems for thermogravimetric analysis under forced flow conditions and their influence on microkinetic results, Review of Scientific Instruments, 86 (9): 095104, 2015.

  • Seibel, C., Wedler, C., Vorobiev, N., Schiemann, M., Scherer, V., Span, R. and Fieback, T., Sorption measurements for determining surface effects and structure of solid fuels, Fuel Processing Technology, 153: 81-86, 2016.

  • Senneca, O., Vorobiev, N., Wütscher, A., Cerciello, F., Heuer, S., Wedler, C., Span, R., Schiemann, M., Muhler, M. and Scherer, V., Assessment of combustion rates of coal chars for oxy-combustion applications, 2nd International Workshop on Oxy-fuel Combustion, Bochum, Germany, 2018.

  • Schiemann, M., Vorobiev, N., Scherer, V., Wedler, C., Richter, M. and Span, R., Effektive Diffusionskoeffizienten in Kokspartikeln aus Oxyfuel-Feuerungen, 28. Deutscher Flammentag, 395-406, Darmstadt, Germany, 2017.

  • Wütscher, A., Wedler, C., Seibel, C., Hiltrop, D., Fieback, T., Muhler, M. and Span, R., On the alternating physicochemical characteristics of Colombian coal during pyrolysis, Journal of Analytical and Applied Pyrolysis, 123: 12-19, 2017.

  • Wedler, C., Richter, M. and Span, R., Integration of sorption kinetics in carbon conversion modeling for the description of oxyfuel combustion processes, Energy Procedia, 142: 1361-1366, 2017.

  • Wedler, C., Arami-Niya, A., Xiao, G., Span, R., May, E. F. and Richter, M., Gas Diffusion and Sorption in Carbon Conversion, Energy Procedia, 158: 1792-1797, 2019.

  • Senneca, O., Vorobiev, N., Wütscher, A., Cerciello, F., Heuer, S., Wedler, C., Span, R., Schiemann, M., Muhler, M. and Scherer, V., Assessment of combustion rates of coal chars for oxy-combustion applications, Fuel, 238: 173-185, 2019.

  • Fieback, T., Hochtemperatur-Sorptionsmessungen für die Bestimmung von Oberflächeneffekten an Festbrennstoffen, Thermodynamik-Kolloquium 2014, 2014.

  • Wedler, C., Arami-Niya, A., Xiao, G., Span, R., May, E. F. and Richter, M., Sorption Kinetics of CO2, CH4 and O2 on Cellulose-based Hydrochars for Carbon Conversion Modelling, Thermodynamik-Kolloquium 2018, 2018.

  • Wedler, C., Richter, M. and Span, R., Sorptive determination of effective diffusion coefficients for integration in carbon conversion models, 2nd International Workshop on Oxy-fuel Combustion, 2018.

  • Wedler, C., Seibel, C., Richter, M., Fieback, T. and Span, R., Oxyfuel Combustion – Experimental Investigation of Sorption Effects on Coal Char, Energy Procedia, 105: 1847-1851, 2017.

  • Wedler, C., Span, R. and Richter, M., Adsorption und Diffusion bei der Oxyfuel-Verbrennung: Graphit als Türöffner zur Verknüpfung von Experiment und MD-Simulation, Jahrestreffen der ProcessNet-Fachgruppen Adsorption und Hochdruckverfahrenstechnik, 2019.

  • Heuer, S., Wedler, C., Ontyd, C., Schiemann, M., Span, R., Richter, M. and Scherer, V., Evolution of coal char porosity from CO2-pyrolysis experiments, Fuel, 253: 1457-1464, 2019.

  • Adsorption and diffusion in oxyfuel combustion – Linking experiment and MD simulation through graphite structures as a first example, Diffusion Fundamentals 8, 2019.

  • Wedler, C., Lotz, K., Arami-Niya, A., Xiao, G., Span, R., Muhler, M., May, E. F. and Richter, M., Influence of Mineral Composition of Chars Derived by Hydrothermal Carbonization on Sorption Behavior of CO2, CH4, and O2, ACS Omega, 2020.

  • Wedler, C., Ontyd, C., Schiemann, M., Scherer, V., Richter, M. and Span, R., Evolution of micro- and mesopore structure during pyrolysis of coal and biomass in different atmospheres, 3rd International Workshop on Oxy-Fuel Combustion, 2020.

  • Wedler, C. and Span, R., A pore-structure dependent kinetic adsorption model for consideration in char conversion – Adsorption kinetics of CO2 on biomass chars, Chemical Engineering Science: 116281, 2020.

  • Wedler, C., Span, R. and Richter, M., Comparison of micro- and macropore evolution of coal char during pyrolysis, Fuel, 275: 117845, 2020.

  • Adsorption und Diffusion bei der Oxyfuel-Verbrennung von Festbrennstoffen: Vergleich von Experiment und MD-Simulation, 29. Deutscher Flammentag, 2019.

  • Wedler, C., Eisenbach, T., Schwarz, J. and Span, R., A first parameterization of the pore-structure dependent kinetic adsorption model for O2 adsorption in biomass conversion modeling, 13th International Conference on Applied Energy, 2021.

  • Tarlinski, D., Freisewinkel, E., Eisenbach, T., Span, R., Schiemann, M. and Scherer, V., Char burnout of walnut shells using optical measurement techniques and first comparison of the experimental data to the CCK model, 46th International Technical Conference on Clean Energy, 2022.

  • Ontyd, C., Freisewinkel, E., Wedler, C., Eisenbach, T., Span, R., Senneca, O. and Scherer, V., Flash pyrolysis of walnut shells and poplar in N2 and CO2: pyrolysis kinetics, pore evolution and a model for evaluation of pyrolysis species, 13th European Conference on Industrial Furnaces and Boilers, 2022.

  • Wedler, C. and Span, R., Micropore Analysis of Biomass Chars by CO2 Adsorption: Comparison of Different Analysis Methods, Energy & Fuels, 35 (10): 8799-8806, 2021.

Go to project

Atomistic multiscale simulations of char conversion

Go to project

Development of a comprehensive kinetic model for the conversion of solid fuels in oxy-fuel atmospheres

Go to project

Theoretical and experimental investigation on the devolatilisation and oxidation of solid-fuel particles in a counterflow burner under oxy-fuel conditions

  • Cai, L., Baroncelli, M., Kruse, S., Felsmann, D., Thies, C. and Pitsch, H., Extinction Characteristics of Methane Counterflow Flames under Oxy-Fuel and Air Conditions, Proceedings of the China National Symposium on Combustion 2016, Ma'anshan, Anhui, China, 2016.

  • Baroncelli, M., Felsmann, D., Kruse, S., Falkenstein, T., Beeckmann, J. and Pitsch, H., Extinction strain rates for coal light volatiles under oxy-fuel conditions, Proceedings of the China National Symposium on Combustion 2016, Ma'anshan, Anhui, China, 2016.

  • Xu, K., Zhang, H., Wu, Y., Baroncelli, M. and Pitsch, H., Transient model for soot formation during the combustion of single coal particles, Proceedings of the Combustion Institute, 36 (2): 2131-2138, 2017.

  • Baroncelli, M., Kruse, S. and Pitsch, H., Experimental and numerical investigation of extinction strain rates of coal devolatilization products under oxy-fuel conditions, Proceedings of the European Combustion Meeting, Budapest, Hungary, 2015.

  • Felsmann, D., Baroncelli, M., Beeckmann, J. and Pitsch, H., Molecular-beam mass spectrometry study of oxy-combustion in a novel coal-plate experiment, Proceedings of the Combustion Institute, 2018.

  • Emmert, J., Baroncelli, M., van der Kley, S., Pitsch, H. and Wagner, S., Axisymmetric Linear Hyperspectral Absorption Spectroscopy and Residuum-Based Parameter Selection on a Counter Flow Burner, Energies, 12 (14): 2786, 2019.

  • Baroncelli, M., Mao, Q., Galle, S., Hansen, N. and Pitsch, H., Role of ring-enlargement reactions in the formation of aromatic hydrocarbons, Physical Chemistry Chemical Physics, 22 (8): 4699-4714, 2020.

  • Cai, L., Kruse, S., Felsmann, D. and Pitsch, H., A Methane Mechanism for Oxy-Fuel Combustion: Extinction Experiments, Model Validation, and Kinetic Analysis, Flow, Turbulence and Combustion, 34: 6970, 2020.

  • Chen, B., Ilies, B. D., Chen, W., Xu, Q., Li, Y., Xing, L., Yang, J., Wei, L., Hansen, N., Pitsch, H., Sarathy, S. M. and Wang, Z., Exploring low temperature oxidation of 1-butene in jet-stirred reactors, Combustion and Flame, 222: 259-271, 2020.

  • Chen, B., Kruse, S., Schmid, R., Cai, L., Hansen, N. and Pitsch, H., Oxygenated PAH formation chemistry investigation in anisole jet stirred reactor oxidation by a thermodynamic approach, 3rd International Workshop on Oxy-Fuel Combustion, 2020.

  • Liu, P., Chen, B., Li, Z., Bennett, A., Sioud, S., Pitsch, H., Sarathy, S. M. and Roberts, W. L., Experimental and theoretical evidence for the temperature-determined evolution of PAH functional groups, Proceedings of the Combustion Institute, 2020.

  • Wen, Xu, Nicolai, H., Schneider, H., Cai, L., Janicka, J., Pitsch, H. and Hasse, C., Flamelet LES of a swirl-stabilized multi-stream pulverized coal burner in air and oxy-fuel atmospheres with pollutant formation, Proceedings of the Combustion Institute, 2020.

  • Wen, Xu, Shamooni, A., Stein, O. T., Cai, L., Kronenburg, A., Pitsch, H., Kempf, A. M. and Hasse, C., Detailed analysis of early-stage NOx formation in turbulent pulverized coal combustion with fuel-bound nitrogen, Proceedings of the Combustion Institute, 2020.

  • Baroncelli, M., Felsmann, D., Hansen, N. and Pitsch, H., Investigating the effect of oxy-fuel combustion and light coal volatiles interaction: A mass spectrometric study, Combustion and Flame, 204: 320-330, 2019.

  • Vorobiev, N., Kruse, S., Pitsch, H. and Schiemann, M., Demonstration of laser-induced incandescence in single coal particle enveloping flames, 9th European Combustion Meeting, 2019.

  • Cai, L., Kruse, S., Felsmann, D., Thies, C., Yalamanchi, K. K. and Pitsch, H., Experimental Design for Discrimination of Chemical Kinetic Models for Oxy-Methane Combustion, Energy & Fuels, 31 (5): 5533-5542, 2017.

  • Chen, B., Kruse, S., Schmid, R., Cai, L., Hansen, N. and Pitsch, H., Oxygenated PAH Formation Chemistry Investigation in Anisole Jet Stirred Reactor Oxidation by a Thermodynamic Approach, Energy & Fuels, 35 (2), 2021.

  • Chen, B., Hellmuth, M., Faller, S., May, L., Liu, P., Cai, L., Roberts, W. L. and Pitsch, H., Exploring the combustion chemistry of anisole in laminar counterflow diffusion-flames under oxy-fuel conditions, Combustion and Flame: 111929, 2021.

  • Baroncelli, M., Mao, Q., Pitsch, H. and Hansen, N., Effects of C1–C3 hydrocarbon blending on aromatics formation in 1-butene counterflow flames, Combustion and Flame, 230: 111427, 2021.

  • Chen, B., Liu, P., Pelucchi, M., Guidici, C., Maffei, L. P., Faller, S., Xu, Q., Huang, J., Zhang, F., Huang, C., Leonherd, K., Wang, Z., Mehl, M., Roberts, W. L., Faravelli, T. and Pitsch, H., New insights into the oxidation chemistry of pyrrole, an N-containing biomass tar component, Proceedings of the Combustion Institute, 2022.

  • Hellmuth, M., Cameron, F., Faller, S., Schmückert, L., Chen, B., Ren, Y. and Pitsch, H., Synergistic effect on PAH and soot formation in ethylene counterflow diffusion flames by the addition of 1,3-dioxolane – a bio-hybrid fuel, Proceedings of the Combustion Institute, 2022.

  • Liu, P., Chen, B., Bennett, A., Pitsch, H. and Roberts, W. L., Probing the influence of hydrogen cyanide on PAH chemistry, Proceedings of the Combustion Institute, 2022.

Go to project

Development of modelling approaches for fluid-particle interactions in turbulent flow by direct particle-fluid simulations

Go to project

Direct numerical simulation and modelling of oxy-fuel combustion processes

Go to project

Detailed experimental investigation and characterisation of oxy-fuel biomass burners via laser-optical methods

Go to project

Robust absorption-spectroscopic diagnostics for biomass combustion: measurement methods for gas species, gas temperatures and particle loading

  • Li, G., Serdyukov, A., Gisi, M., Werhahn, O. and Ebert, V., FTIR-based measurements of self-broadening and self-shift coefficients as well as line strength in the first overtone band of HCl at 1.76 µM, Journal of Quantitative Spectroscopy and Radiative Transfer, 165: 76–87, 2015.

  • Köser, J., Becker, L., Vorobiev, N., Schiemann, M., Scherer, V., Böhm, B. and Dreizler, A., Characterization of single coal particle combustion within oxygen-enriched environments using high-speed OH-PLIF, Applied Physics B, 121 (4): 459-464, 2015.

  • Blume, N. G., Ebert, V., Dreizler, A. and Wagner, S., Broadband fitting approach for the application of supercontinuum broadband laser absorption spectroscopy to combustion environments, Measurement Science and Technology, 27 (1): 015501, 2016.

  • Köser, J., Becker, L., Goßmann, A-K., Böhm, B. and Dreizler, A., Investigation of ignition and volatile combustion of single coal particles within oxygen-enriched atmospheres using high-speed OH-PLIF, Proceedings of the Combustion Institute, 36 (2): 2103-2111, 2017.

  • Agizza, M. A., Bürkle, S., Becker, L., Greifenstein, M., Bagheri, G., Doost, S., Faravelli, T., Janicka, J., Wagner, S. and Dreizler, A., Reactor network modelling of a close to reality combustor using residence time measurements, 10th Mediterranean Combustion Symposium, 2017.

  • Bürkle, S., Becker, L., Agizza, M. A., Dreizler, A., Ebert, V. and Wagner, S., In-situ measurement of residence time distributions in a turbulent oxy-fuel gas-flame combustor, Experiments in Fluids, 58 (7): 647, 2017.

  • Hees, J., Bürkle, S., Becker, L., Zabrodiec, D., Wagner, S., Dreizler, A. and Kneer, R., A complementary approach for the experimental investigation of solid oxy-fuel combustion using optical diagnostics, 2nd International Workshop on Oxy-fuel Combustion, 2018.

  • Bürkle, S., Ebert, V., Rauen, D., Dreizler, A., Möller, G. H., Hees, J., Zabrodiec, D., Maßmeyer, A. and Wagner, S., Laserbasierte Messung von Temperatur und Spezieskonzentrationen bei der Verbrennung von torrefizierter Biomasse in einer 100 kWth-Staubfeuerungsversuchsanlage, 28. Deutscher Flammentag, 2017.

  • Bürkle, S., Becker, L., Dreizler, A. and Wagner, S., Experimental investigation of the flue gas thermochemical composition of an oxy-fuel swirl burner, Fuel, 231: 61-72, 2018.

  • Bürkle, S., Becker, L., Agizza, M. A., Dreizler, A. and Wagner, S., Comparison of two measurement strategies to obtain the residence time distribution in combustion chambers using tunable diode laser absorption spectroscopy, Applied Optics, 58 (10): C36, 2019.

  • Bürkle, S., Dreizler, A., Ebert, V. and Wagner, S., Experimental comparison of a 2D laminar diffusion flame under oxy-fuel and air atmosphere, Fuel, 212: 302-308, 2018.

  • Emmert, J., Blume, N. G., Dreizler, A. and Wagner, S., PolySpec: polynomial spectrum models for fast and light-weight spectroscopic evaluation, Applied Optics, 57 (34): 9907, 2018.

  • Köser, J., Knappstein, R., Goßmann, A-K., Becker, L., Böhm, B., Janicka, J. and Dreizler, A., An Experimental and Numerical Study of Volatile Combustion of Single Coal Particles in an Oxygen Enriched Atmosphere, 32nd Annual International Pittsburgh Coal Conference, Pittsburgh, Pennsylvania, USA, 2015.

  • Emmert, J., Baroncelli, M., van der Kley, S., Pitsch, H. and Wagner, S., Axisymmetric Linear Hyperspectral Absorption Spectroscopy and Residuum-Based Parameter Selection on a Counter Flow Burner, Energies, 12 (14): 2786, 2019.

  • Grauer, S. J., Emmert, J., Sanders, S. T., Wagner, S. and Daun, K. J., Multiparameter gas sensing with linear hyperspectral absorption tomography, Measurement Science and Technology, 30 (10): 105401, 2019.

  • Emmert, J., Wagner, S. and Daun, K. J., Quantifying the spatial resolution of the maximum a posteriori estimate in linear, rank-deficient, Bayesian hard field tomography, Measurement Science and Technology, 2020.

  • Emmert, J., Grauer, S. J., Wagner, S. and Daun, K. J., Efficient Bayesian inference of absorbance spectra from transmitted intensity spectra, Optics Express, 27 (19): 26893-26909, 2019.

  • Doost, S., Ries, F., Becker, L., Bürkle, S., Wagner, S., Ebert, V., Dreizler, A., di Mare, F., Sadiki, A. and Janicka, J., Residence time calculations for complex swirling flow in a combustion chamber using large-eddy simulations, Chemical Engineering Science, 156: 97-114, 2016.

  • Emmert, J., Schneider, H., Meißner, C., Sidiropoulos, E., Hölzer, J. I., Seeger, T., Böhm, B., Dreizler, A. and Wagner, S., Characterization of temperature distributions in a swirled oxy-fuel coal combustor using tomographic absorption spectroscopy with fluctuation modelling, Applications in Energy and Combustion Science, 6: 100025, 2021.

  • Emmert, J., Schneider, H., Böhm, B., Dreizler, A. and Wagner, S., Phase-locked absorption tomography for retrieving 5 kHz time-resolved tracer profiles in solid fuel combustion, Applications in Energy and Combustion Science, 12: 100093, 2022.

Go to project

Modeling of Particle-Turbulence-Chemistry Interaction in Oxy-Fuel-Processes

  • Knappstein, R., Kuenne, G., Ketelheun, A., Köser, J., Becker, L., Heuer, S., Schiemann, M., Scherer, V., Dreizler, A., Sadiki, A. and Janicka, J., Devolatilization and volatiles reaction of individual coal particles in the context of FGM tabulated chemistry, Combustion and Flame, 169: 72-84, 2016. doi 

  • Ketelheun, A., Mehdizadeh, A., Knappstein, R., Sadiki, A. and Janicka, J., Investigation of Unsteady Simulation Methods in an Oxyfuel Configuration, 27. Deutscher Flammentag, Clausthal-Zellerfeld, Germany, 2015.

  • Knappstein, R., Künne, G., Meier, T., Sadiki, A. and Janicka, J., Evaluation of coal particle volatiles reaction by using detailed kinetics and FGM tabulated chemistry, Fuel, 201: 39-52, 2017.

  • Köser, J., Knappstein, R., Goßmann, A-K., Becker, L., Böhm, B., Janicka, J. and Dreizler, A., An Experimental and Numerical Study of Volatile Combustion of Single Coal Particles in an Oxygen Enriched Atmosphere, 32nd Annual International Pittsburgh Coal Conference, Pittsburgh, Pennsylvania, USA, 2015.

Go to project

Investigation of ignition and combustion processes of solid fuel particles under oxy-fuel conditions

Go to project

Sensitivity analysis and uncertainty quantification of pulverised solid fuel combustion

Go to project

Experimental investigation of pulverised biomass combustion for validation of numerical models

  • Hees, J., Zabrodiec, D., Maßmeyer, A., Hatzfeld, O. and Kneer, R., Experimental Investigation and Comparison of Pulverized Coal Combustion in CO2/O2- and N2/O2-Atmospheres, SPEIC: Towards Sustainable Combustion, Lisbon, Portugal, 2014.

  • Zabrodiec, D., Maßmeyer, A., Hees, J., Gronarz, T., Gövert, B., Höfler, M., Ohliger, A., Habermehl, M., Hatzfeld, O. and Kneer, R., Experimental Characterization of the effect of Dry Recirculation on a Swirled Self-Stabilized Oxycoal Flame, 31st Annual International Pittsburgh Coal Conference, Pittsburgh, Pennsylvania, USA, 2014.

  • Habermehl, M., Hees, J., Maßmeyer, A., Zabrodiec, D., Hatzfeld, O. and Kneer, R., Comparison of Flame Stability Under Air and Oxy-Fuel Conditions for an Aerodynamically Stabilized Pulverized Coal Swirl Flame, Journal of Energy Resources Technology, 138 (4): 042209, 2016.

  • Hees, J., Zabrodiec, D., Maßmeyer, A., Habermehl, M. and Kneer, R., Experimental Investigation and Comparison of Pulverized Coal Combustion in CO2/O2- and N2/O2-Atmospheres, Flow, Turbulence and Combustion, 96 (2): 417-431, 2015.

  • Hees, J., Zabrodiec, D., Maßmeyer, A., Pielsticker, S., Gövert, B., Habermehl, M., Hatzfeld, O. and Kneer, R., Detailed analyzes of pulverized coal swirl flames in oxy-fuel atmospheres, Combustion and Flame, 172: 289-301, 2016.

  • Becker, L., Kosaka, H., Böhm, B., Doost, S., Knappstein, R., Habermehl, M., Kneer, R., Janicka, J. and Dreizler, A., Experimental investigation of flame stabilization inside the quarl of an oxyfuel swirl burner, Fuel, 201: 124-135, 2017.

  • Zabrodiec, D., Hees, J., Maßmeyer, A., vom Lehn, F., Habermehl, M., Hatzfeld, O. and Kneer, R., Experimental investigation of pulverized coal flames in CO2/O2- and N2/O2-atmospheres: Comparison of solid particle radiative characteristics, Fuel, 201: 136-147, 2017.

  • Habermehl, M., Hees, J., Zabrodiec, D. and Kneer, R., Charakterisierung ähnlicher, aerodynamisch bestimmter Flammenzustände eines Kohlenstaub-Drallbrenners im Luft- und Oxyfuel-Betrieb, 27. Deutscher Flammentag, Clausthal-Zellerfeld, Germany, 2015.

  • Zabrodiec, D., Becker, L., Hees, J., Maßmeyer, A., Habermehl, M., Hatzfeld, O., Dreizler, A. and Kneer, R., Detailed Analysis of the Velocity Fields from 60 kW Swirl-Stabilized Coal Flames in CO2/O2- and N2/O2-Atmospheres by Means of Laser Doppler Velocimetry and Particle Image Velocimetry, Combustion Science and Technology, 189 (10): 1751-1775, 2017.

  • Bürkle, S., Ebert, V., Rauen, D., Dreizler, A., Möller, G. H., Hees, J., Zabrodiec, D., Maßmeyer, A. and Wagner, S., Laserbasierte Messung von Temperatur und Spezieskonzentrationen bei der Verbrennung von torrefizierter Biomasse in einer 100 kWth-Staubfeuerungsversuchsanlage, 28. Deutscher Flammentag, 2017.

  • Hees, J., Bürkle, S., Becker, L., Zabrodiec, D., Wagner, S., Dreizler, A. and Kneer, R., A complementary approach for the experimental investigation of solid oxy-fuel combustion using optical diagnostics, 2nd International Workshop on Oxy-fuel Combustion, 2018.

  • Hees, J., Zabrodiec, D., Maßmeyer, A., Hatzfeld, O., Habermehl, M. and Kneer, R., Kohlenstaubverbrennung in Oxyfuel-Atmosphäre: Einfluss der Oxidatorzusammensetzung auf den Verbrennungsprozess, 28. Deutscher Flammentag, 2017.

  • Hees, J., Zabrodiec, D., Maßmeyer, A., Hatzfeld, O. and Kneer, R., Experimental investigation into the influence of the oxygen concentration on a pulverized coal swirl flame in oxy-fuel atmosphere, Fuel, 240: 64-74, 2019.

  • Möller, G. H., Maßmeyer, A., Hees, J., Zabrodiec, D., Habermehl, M. and Kneer, R., Chemiluminescence measurements in a pulverized fuel furnace of pure torrefied biomasses in comparison to solid fossil fuels, 42nd International Technical Conference on Clean Energy, Clearwater, Florida, USA, 2017.

  • Zabrodiec, D., Hees, J., Maßmeyer, A., Hatzfeld, O. and Kneer, R., Experimental Investigation and Comparison of radiative characteristics of Pulverized Coal Flames in CO2/O2- and N2/O2-Atmospheres, 1st International Workshop on Oxy-Fuel Combustion, 2016.

  • Zabrodiec, D., Hees, J., Maßmeyer, A. and Kneer, R., Progress and Challenges in Flow Field Studies of 40–60 kWth Pulverized Coal Flames, Joint Meeting the German and Italian Sections of the Combustion Institute, Sorrento, Italy, 2018.

  • Zabrodiec, D., Hees, J., Möller, G. H., Hatzfeld, O. and Kneer, R., Pulverized coal swirl flames in oxy-fuel conditions: Effects of oxidizer O2 concentration on flow field and local gas composition, Proceedings of the Combustion Institute, 2018.

  • Zabrodiec, D., Maßmeyer, A., Hees, J., Hatzfeld, O. and Kneer, R., Flow Pattern and Behavior of 40 kWth Pulverized Torrefied Biomass Flames under Atmospheric and Oxy-fuel Conditions, 14th International Conference on Sustainable Development of Energy, Water and Environment Systems, 2019.

  • Maßmeyer, A., Zabrodiec, D., Hees, J., Kreitzberg, T., Hatzfeld, O. and Kneer, R., Flame Pattern Analysis for 60 kWth Flames under Conventional Air-Fired and Oxy-Fuel Conditions for Two Different Types of Coal, 9th International Symposium on Coal Combustion, 2019.

  • Askarizadeh, H., Zabrodiec, D., Maßmeyer, A., Kreitzberg, T. and Kneer, R., Numerical simulation of swirl oxy-coal combustion in a 60 kW Test Facility using the SST k-ω turbulence model, 3rd International Workshop on Oxy-Fuel Combustion, 2020.

  • Maßmeyer, A., Zabrodiec, D., Dreizler, A. and Kneer, R., Stability Analysis of 60 kWth Coal Flames under Air and Oxyfuel Conditions, 3rd International Workshop on Oxy-Fuel Combustion, Montabaur, Germany, 2020.

  • Maßmeyer, A., Zabrodiec, D., Hees, J., Kreitzberg, T., Hatzfeld, O. and Kneer, R., Flame pattern analysis for 60 kWth flames under conventional air-fired and oxy-fuel conditions for two different types of coal, Fuel, 271: 117457, 2020.

  • Nicolai, H., Wen, Xu, Miranda, F., Zabrodiec, D., Maßmeyer, A., di Mare, F., Dreizler, A., Hasse, C., Kneer, R. and Janicka, J., Numerical investigation of swirl-stabilized pulverized coal flames in air and oxy-fuel atmospheres by means of large eddy simulation coupled with tabulated chemistry, Fuel: 119429, 2020.

  • Zabrodiec, D., Maßmeyer, A., Hees, J., Hatzfeld, O. and Kneer, R., Flow pattern and behavior of 40 kWth pulverized torrefied biomass flames under atmospheric and oxy-fuel conditions, Renewable and Sustainable Energy Reviews, 138: 110493, 2021.

  • Askarizadeh, H., Nicolai, H., Zabrodiec, D., Pielsticker, S., Hasse, C., Kneer, R. and Maßmeyer, A., Numerische Untersuchung zur Relevanz von Teilmodellen für Pyrolyse und Koksabbrand in turbulenten drallbehafteten Flammen unter Oxyfuel-Bedingungen, 30. Deutscher Flammentag, Hannover, Germany, 2021.

  • Sadiki, A., Agrebi, S., Chrigui, M., Doost, S., Knappstein, R., di Mare, F., Janicka, J., Maßmeyer, A., Zabrodiec, D., Hees, J. and Kneer, R., Analyzing the effects of turbulence and multiphase treatments on oxy-coal combustion process predictions using LES and RANS, Chemical Engineering Science, 166: 283-302, 2017.

  • Özer, B., Maßmeyer, A., Zabrodiec, D., Hatzfeld, O. and Kneer, R., Experimental Study on the Influence of Methane-Cofiring on Pulverized Coal Flames under Air and Oxy-Fuel Conditions, 30. Deutscher Flammentag, 2021.

  • Nicolai, H., Debiagi, P., Wen, Xu, Dressler, L., Maßmeyer, A., Janicka, J. and Hasse, C., Flamelet LES of swirl-stabilized oxy-fuel flames using directly coupled multi-step solid fuel kinetics, Combustion and Flame, 241: 112062, 2022.

  • Habermehl, M., Hees, J., Zabrodiec, D. and Kneer, R., Comparison of Flame Stability under Air and Oxy-Fuel Conditions for an Aerodynamically Stabilized Pulverized Coal Swirl Flame, 40th International Technical Conference on Clean Coal & Fuel Systems, Clearwater, Florida, USA, 2015.

  • Özer, B., Zabrodiec, D., Kneer, R. and Maßmeyer, A., Experimental investigation of 40 kWth methane-assisted and self-sustained pulverized biomass flames, Proceedings of the Combustion Institute, 2022.

  • Wen, Xu, Nicolai, H., Debiagi, P., Zabrodiec, D., Maßmeyer, A., Kneer, R. and Hasse, C., Flamelet LES of a 40 kWth pulverized torrefied biomass furnace in air and oxy-fuel atmospheres, Proceedings of the Combustion Institute, 2022.

Go to project

Unsteady modelling and simulation of oxy-fuel combustion chambers

Go to project

Spectral modeling of thermal radiation in Oxy-Fuel pulverized coal flames

Go to project

Modelling of radiative properties of pulverised biomass particles during oxy-fuel combustion

  • Gronarz, T., Habermehl, M. and Kneer, R., Modeling of particle radiation interaction in solid fuel combustion with artificial neural networks, Journal of Power Technologies, 96 (3): 206-211, 2016.

  • Gronarz, T., Habermehl, M. and Kneer, R., Modeling of particle radiative properties in coal combustion depending on burnout, Heat and Mass Transfer, 53 (4): 1225-1235, 2017.

  • Gronarz, T., Schnell, M., Siewert, C., Schneiders, L., Schröder, W. and Kneer, R., Comparison of scattering behaviour for spherical and non-spherical particles in pulverized coal combustion, International Journal of Thermal Sciences, 111: 116-128, 2017.

  • Gronarz, T., Schulze, J., Laemmerhold, M., Graeser, P., Gorewoda, J., Kez, V., Habermehl, M., Schiemann, M., Ströhle, J., Epple, B., Scherer, V. and Kneer, R., Quantification of the influence of parameters determining radiative heat transfer in an oxy-fuel operated boiler, Fuel Processing Technology, 157: 76-89, 2017.

  • Gronarz, T., Habermehl, M. and Kneer, R., Approximations for particle scattering phase functions in solid fuel combustion, 41st International Technical Conference on Clean Coal & Fuel Systems, Clearwater, Florida, USA, 2016.

  • Gronarz, T. and Kneer, R., Modellierung der Streuung und Absorption von Wärmestrahlung an Partikeln bei der Verbrennung von Kohlenstaub, Jahrestreffen der Fachgruppe Wärme- und Stoffübertragung, Kassel, Germany, 2016.

  • Gronarz, T., Habermehl, M., Hatzfeld, O. and Kneer, R., Investigation of modelling approaches for scattering and absorption properties of particles in pulverized coal combustion, Industrial Combustion (Article Number 201602), 2016.

  • Gronarz, T., Habermehl, M. and Kneer, R., Influence of Approximations for Particle Scattering Phase Functions on Heat Transfer, 10th Mediterranean Combustion Symposium, 2017.

  • Gronarz, T., Schiemann, M. and Kneer, R., Sensitivity Analysis for Parameters for Radiative Heat Transfer in a 3-D pulverized Coal Combustion Scenario, Eurotherm Seminar 110 – Computational Thermal Radiation in Participating Media – VI, Cascais, Portugal, 2018.

  • Gronarz, T., Johansson, R. and Kneer, R., Modeling of Anisotropic Scattering of Thermal Radiation in Pulverized Coal Combustion, Journal of Heat Transfer, 140 (6): 062701, 2018.

  • Kez, V., Consalvi, J-L., Liu, F., Gronarz, T., Ströhle, J., Kneer, R. and Epple, B., Investigation of gas and particle radiation modelling in wet oxy-coal combustion atmospheres, International Journal of Heat and Mass Transfer, 133: 1026-1040, 2019.

  • Gronarz, T., Höges, C., Kez, V., Habermehl, M. and Kneer, R., Comparison of scattering behaviour for inhomogeneous particles in pulverized coal combustion, International Journal of Thermal Sciences, 140: 1-7, 2019.

  • Johansson, R., Gronarz, T. and Kneer, R., Influence of Index of Refraction and Particle Size Distribution on Radiative Heat Transfer in a Pulverized Coal Combustion Furnace, Journal of Heat Transfer, 139 (4): 042702, 2017.

  • Gronarz, T., Hatzfeld, O., Habermehl, M. and Kneer, R., On the importance of particle radiation interaction in the numerical simulation of pulverized coal combustion, 10th European Conference on Industrial Furnaces and Boilers : INFUB 10, Porto, Portugal, 2015.

  • Schiemann, M., Gronarz, T., Graeser, P., Gorewoda, J., Kneer, R. and Scherer, V., A correlation between char emissivity and temperature, Fuel, 256: 115889, 2019.

  • Kez, V., Consalvi, J-L., Liu, F., Koch, M., von Bohnstein, M., Ströhle, J., Hatzfeld, O. and Kneer, R., Entwicklung eines Weighted-Sum-of-Gray-Gases Modells zur Berücksichtigung nicht-grauer Strahlungseigenschaften von Partikeln in Feststoffverbrennungen, 29. Deutscher Flammentag, Bochum, Germany, 2019.

  • Koch, M., Pörtner, L., Gu, Y., Schiemann, M., Rohlfs, W. and Kneer, R., Comparison of scattering phase functions of reacting and non-reacting pulverised fuel particles, Fuel: 119415, 2020.

  • Kez, V., Consalvi, J-L., Liu, F., Koch, M., Hatzfeld, O. and Kneer, R., Development of a Weighted-Sum-of-Gray-Gases Model for Modeling Radiative Heat Transfer in Coal-Fired Oxy-Fuel Boilers, 9th International Symposium on Radiative Transfer, 2019.

  • Koch, M., Pielsticker, S. and Kneer, R., Einfluss inhomogener Partikelverteilungen innerhalb dichter Partikelwolken auf die Wärmestrahlung bei der Feststoffverbrennung, 30. Deutscher Flammentag, 2021.

  • Koch, M., Jörg, J., Zabrodiec, D., Schnell, M., Hatzfeld, O. and Kneer, R., Entwicklung eines Experimentes zur Messung der Streuung von Wärmestrahlung an akustisch levitierenden Partikeln, 29. Deutscher Flammentag, 2019.

Go to project

Measurement of the radiative properties of solid fuel particles in oxy-fuel atmospheres

  • Graeser, P. and Schiemann, M., An attempt to measure the emissivity of burning coal particles in Oxy-fuel atmospheres: Test rig calibration and first results, 40th International Technical Conference on Clean Coal & Fuel Systems, Clearwater, Florida, USA, 2015.

  • Graeser, P. and Schiemann, M., Char particle emissivity of two coal chars in oxy-fuel atmospheres, Fuel, 183: 405-413, 2016.

  • Gronarz, T., Schulze, J., Laemmerhold, M., Graeser, P., Gorewoda, J., Kez, V., Habermehl, M., Schiemann, M., Ströhle, J., Epple, B., Scherer, V. and Kneer, R., Quantification of the influence of parameters determining radiative heat transfer in an oxy-fuel operated boiler, Fuel Processing Technology, 157: 76-89, 2017.

  • Graeser, P. and Schiemann, M., Emissivity of burning bituminous coal char particles – Burnout effects, Fuel, 196: 336-343, 2017.

  • Schiemann, M., Graeser, P., Heuer, S., Vorobiev, N. and Scherer, V., Combustion investigations with Colombian coal: Summary of experiments and numerical interpretation, 42nd International Technical Conference on Clean Energy, Clearwater, Florida, USA, 2017.

  • Graeser, P., Wütscher, A., Cerciello, F., Muhler, M. and Schiemann, M., Emissivity Comparison between Chars and Demineralized Coal Chars under Oxycombustion Conditions, Chemical Engineering & Technology, 41 (7): 1490-1496, 2018.

  • Schiemann, M., Gronarz, T., Graeser, P., Gorewoda, J., Kneer, R. and Scherer, V., A correlation between char emissivity and temperature, Fuel, 256: 115889, 2019.

  • von Bohnstein, M., Graeser, P., Schiemann, M., Ströhle, J. and Epple, B., 3D CFD Simulation of a 250 MWel Oxy-fuel Boiler with Evaluation of Heat Radiation Calculation, 14th International Conference on Sustainable Development of Energy, Water and Environment Systems, 2019.

  • Graeser, P., Pörtner, L. and Schiemann, M., Influence of the Mineral Content on the Emissivity of Hydrothermal Char, Chemical Engineering & Technology, 43 (5): 1016-1020, 2020.

  • Graeser, P. and Schiemann, M., Investigations on the emissivity of burning coal char particles: Influence of particle temperature and composition of reaction atmosphere, Fuel, 263: 116714, 2020.

  • Koch, M., Pörtner, L., Gu, Y., Schiemann, M., Rohlfs, W. and Kneer, R., Comparison of scattering phase functions of reacting and non-reacting pulverised fuel particles, Fuel: 119415, 2020.

  • Pörtner, L., Gu, Y. and Schiemann, M., Investigation of Pulverized Biomass and Coal Char Emissivity, Energies, 13 (18): 4620, 2020.

  • Schiemann, M., Graeser, P. and Pörtner, L., Char emissivity measurements for coal chars, 9th European Combustion Meeting, 2019.

  • Gronarz, T., Schiemann, M. and Kneer, R., Sensitivity Analysis for Parameters for Radiative Heat Transfer in a 3-D pulverized Coal Combustion Scenario, Eurotherm Seminar 110 – Computational Thermal Radiation in Participating Media – VI, Cascais, Portugal, 2018.

  • von Bohnstein, M., Richter, M., Graeser, P., Schiemann, M., Ströhle, J. and Epple, B., 3D CFD simulation of a 250 MWel oxy-fuel boiler with evaluation of heat radiation calculation, Renewable and Sustainable Energy Reviews, 137, 2021.

  • von Bohnstein, M., Graeser, P., Schiemann, M., Ströhle, J. and Epple, B., 3D CFD Simulation of a 250 MWel Oxy-fuel Boiler with Evaluation of Heat Radiation Calculation, 29. Deutscher Flammentag, Bochum, Germany, 2019.

  • Pörtner, L. and Schiemann, M., Optimization of a setup to investigate the morphology and emissivity of coal and biomass particles during burnout, 46th International Technical Conference on Clean Energy, 2022.

Go to project

Measurement of the temperature depending spectral emissivity of ashes and deposits under Oxy-Fuel conditions

  • Greffrath, F., Gorewoda, J., Schiemann, M. and Scherer, V., Influence of chemical composition and physical structure on normal radiant emittance characteristics of ash deposits, Fuel, 134: 307-314, 2014.

  • Gorewoda, J., Schiemann, M., Scherer, V. and Neuroth, M., An Examination on the Influence of the Oxidation State of Iron on the Spectral Radiative Emittance of Synthetic Ash Layers, 40th International Technical Conference on Clean Coal & Fuel Systems, Clearwater, Florida, USA, 2015.

  • Gronarz, T., Schulze, J., Laemmerhold, M., Graeser, P., Gorewoda, J., Kez, V., Habermehl, M., Schiemann, M., Ströhle, J., Epple, B., Scherer, V. and Kneer, R., Quantification of the influence of parameters determining radiative heat transfer in an oxy-fuel operated boiler, Fuel Processing Technology, 157: 76-89, 2017.

  • Gorewoda, J. and Scherer, V., Influence of Carbonate Decomposition on Normal Spectral Radiative Emittance in the Context of Oxyfuel Combustion, Energy & Fuels, 30 (11): 9752-9760, 2016.

  • Gorewoda, J. and Scherer, V., Comparison of normal spectral emittance of sulfates and carbonates – significant mineral classes of ashes under oxy-fuel conditions, Combura Symposium, Soesterberg, Netherlands, 2016.

  • Gorewoda, J. and Scherer, V., Normal Radiative Emittance of Coal Ash Sulfates in the Context of Oxyfuel Combustion, Energy & Fuels, 31 (4): 4400-4406, 2017.

  • Gorewoda, J. and Scherer, V., Key parameters for the radiative emittance of ashes of solid fuels, Energy Procedia, 120: 181-188, 2017.

  • Draper, T., Gorewoda, J., Kolczynski, L., Fry, A., Scherer, V., Ring, T. and Eddings, E., The Influence of Temperature on the Spectral Emittance of Ash Deposits taken from a 1.5 MW, Pulverized Coal Test Facility, 42nd International Technical Conference on Clean Energy, Clearwater, Florida, USA, 2017.

Go to project

Optimisation and management of an integrated simulation platform for large-scale simulations of oxy-fuel combustion

Go to project