Radiation Intensity of Propane-Fired Oxy-Fuel Flames: Implications for Soot Formation
作者： Klas Andersson , Robert Johansson , Filip Johnsson , Bo Leckner
DOI: 10.1021/EF7004942
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摘要: The changes in the soot-related radiation intensity between two different oxy-fuel flames and an air-fired flame were investigated a 100 kW test unit firing propane. cases with 21 27 vol % O2 recycled flue gas (RFG) run amounts of dry RFG, which principle only consisted CO2 from combustion some excess O2. stoichiometric oxygen-to-fuel ratio was kept at 1.15 all cases. Total measured narrow angle radiometer. Temperature composition measurements served as inputs to computations radiation. A comparison computed total enabled estimation related soot. Clear differences observed amount soot formed (also compared air flame). In formation is almost completely suppressed, but when flow through burner reduced by about 20% (by volume) (i.e., RFG), present becomes significant. This change volume fraction affects emitted flames; images qualitatively confirm these luminosity. Thus, carbon dioxide not increases radiation, it can also drastically influence originating during combustion.
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