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Analysis of Oscillating Combustion for NOx-Reduction in Pulverized Fuel Boilers

Jolibois, Nicklas; Aleksandrov, Krasimir; Hauser, Manuela; Stapf, Dieter; Seifert, Helmut; Matthes, Jörg; Waibel, Patrick; Vogelbacher, Markus ORCID iD icon; Keller, Hubert B.; Gehrmann, Hans-Joachim

Abstract (englisch):

Thermal power plants in different fields are regularly adapted to the state-of-the-art emissions standards, applying “The Best Available Techniques Reference”. Since 2016 in the power plant area new, more stringent limits for power plant units with a thermal output of more than 300 MW operated with black coal are valid. Usually, in order to reach the new limits e.g., for NOX emissions, downstream reduction processes (Selective Non-Catalytic Reduction, SNCR or Selective Catalytic eduction) are applied, which use of operating resources (essentially ammonia water) thereby increase. By the means of an xperimentally validated process, by which pulverized fuel is fed by oscillation through a swirl burner into a pilot ombustion chamber with a thermal output of 2.5 MW, nitrogen oxides can be reduced without further activities, for nstance from 450 mg/mN3 in non-oscillation operation mode (0 Hz) to 280 mg/mN3 in oscillation operation mode (3.5 Hz), normalized to an O2–content of 6% each. These findings were patented in EP3084300. Particularly promising are the experiments which utilize oscillation of a large portion of the burn out air instead of the fuel in order to minimize the fatigue of the pulverized fuel oscillator, amongst others. ... mehr

Verlagsausgabe §
DOI: 10.5445/IR/1000128910
Veröffentlicht am 25.01.2021
DOI: 10.3390/inventions6010009
Zitationen: 5
Zitationen: 6
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Automation und angewandte Informatik (IAI)
Institut für Technische Chemie (ITC)
Publikationstyp Zeitschriftenaufsatz
Publikationsdatum 19.01.2021
Sprache Englisch
Identifikator ISSN: 2411-5134
KITopen-ID: 1000128910
HGF-Programm 38.05.01 (POF IV, LK 01) Anthropogenic Carbon Cycle
Weitere HGF-Programme 37.12.02 (POF IV, LK 01) Design,Operation & Digitalization of the Future Energy Grids
Erschienen in Inventions
Verlag MDPI
Band 6
Heft 9
Seiten Article no: 9
Bemerkung zur Veröffentlichung Gefördert durch den KIT-Publikationsfonds
Schlagwörter oscillating combustion; NOx-reduction; pulverized fuel; boiler
Nachgewiesen in Scopus
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