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Investigation of the N2O Reduction Mechanism in the Reburning Process

Identyfikatory
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
Paper presents some results of investigations of the nitrous oxide reduction efficiency in the atmosphere produced by combustion of methane as a reburning fuel in temperature range 750-950°C. Experiments were carried out at atmospheric pressure in a quartz tube reactor placed horizontally in an electric furnace. Mixtures of N2O/N2/O2/CH4, N2O/N2/O2/CO2/CH4, and N2O/N2/O2/CO/CH4 of various fractions of reactants were supplied continuously into the reactor, and after leaving its second end cooled and passed by FTIR spectrometer Awatar 350 for measurement of N2O concentration. These measurements were also checked using NDIR spectrometer. The temperature was measured along the reactor axis with a thermocouple fitted inside. Based on the experiments and modelling of one-dimensional flow reactor, the main reactions of N2O reduction and their kinetics data were determined.
Słowa kluczowe
Rocznik
Strony
367--375
Opis fizyczny
Bibliogr. 17 poz., rys., tab.
Twórcy
autor
autor
  • Silesian University of Technology, Department of Metallurgy, ul. Krasińskiego 8, 40-019 Katowice, Poland, boguslaw.gradon@polsl.pl
Bibliografia
  • [1] Hayhurst A.N., Lawrence A.D.: Emissions of Nitrous Oxide from Combustion Sources. Progress in Energy and Combustion Science. 18, (1992), pp. 369-380.
  • [2] Bonn B., Pelz G., Bauman H.: Formation and Decomposition of N2O in Fluidized Bed Boilers. Fuel, 74, (1995), pp. 165-171.
  • [3] Nowak W.: Emisja zanieczyszczeń z kotłów fluidalnych. Materiały konferencji „Niskoemisyjne Techniki Spalania”, Ustroń-Zawodzie 1996.
  • [4] Lyngfelt A., Åmand L.E., Leckner B.: Reversed air staging - a method for reduction of N2O emissions from fluidized bed combustion of coal. Fuel, 77, (1998), pp. 953-959.
  • [5] Leckner B.: Emissions of Nitrous Oxide from Large Combustion Plants. Paper presented on the meeting of The Second European Climate Change Programme, Topic Group “Other Green House Gases”, Brussels, 2006-01-30.
  • [6] Tarelho L.A.C., Matos M.A.A., Pereira F.J.M.A.: Axial Concentration Profiles and N2O Flue Gas in a Pilot Scale Bubbling Fluidized Bed Coal Combustor. Fuel Processing Technology, 86, (2005), pp. 925-940.
  • [7] Jansohn P., Kaiser T.: Advanced Combustion Technologies for a Wide Spectrum of Fuels. The 5-th Int. Conference on Technologies and Combustion for a Clean Environment, Lisbon, Portugal 1999.
  • [8] Jensen A., Johnsson J.E., Dam-Johansen K.: Nitrogen Chemistry in FBC with Limestone Addition. Proceedings of 26-th Symposium (Int.) on Combustion, The Combustion Institute, Pittsburgh 1996, pp. 3335-3342.
  • [9] Glarborg P., Jensen A.D., Johnsson J.E.: Some Aspects of Fuel Nitrogen Conversion in Solid Fuel Fired System. The 6-th Int. Conference on Technologies and Combustion for a Clean Environment, Porto, Portugal 2001.
  • [10] Armesto L., Boerrigter H., Bahillo A., Otero J.: N2O Emissions from Fuidised Bed Combustion. The effect of fuel characteristics and operating conditions. Fuel, (2003), 82, pp. 1845-1850.
  • [11] Reidick A., Kremer H.: Pollutant Formation during Coal Combustion in a CFB Test Furnace. Proceedings of 26-th Symposium (Int.) on Combustion, The Combustion Institute, Pittsburgh 1996, pp. 3309-3315.
  • [12] Leckner B., Gustavsson L.: Reduction of N2O by Gas Injection in CFB Boilers. Journal of the Institute of Energy, 64, (1991), pp. 176-182.
  • [13] Marban G., Kapteijn F., Moulijn J.A.: Gas Injection as a Measure to Reduce N2O Emissions from Fluidized Bed Combustion of Coal. Coal Science, (1995), pp. 1915-1918.
  • [14] Marban G., Kapteijn F., Moulijn J.A.: Fuel-Gas Injection to Reduce N2O Emissions from the Combustion of Coal in a Fluidized Bed. Combustion and Flame, 107, (1996), pp. 103-113.
  • [15] Gradoń B.: Rola podtlenku azotu w modelowaniu emisji NO z procesów spalania paliw gazowych w piecach wysokotemperaturowych. Zeszyty Naukowe Politechniki Śląskiej, z. 67, Hutnictwo, Gliwice 2003.
  • [16] Miller J.A., Bowman C.T.: Mechanism and modeling of nitrogen chemistry in combustion. Progress in Energy and Combustion Science, 15, (1989), pp. 287-338.
  • [17] Tomeczek J., Gradoń B.: The Role of N2O and NNH in the Formation of NO via HCN in Hydrocarbon Flames. Combustion and Flame, 133, (2003), pp. 311-322.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BWM4-0031-0010
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