Prediction of NOx Emissions from the High Temperature Combustion of Natural-gas

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Title Prediction of NOx Emissions from the High Temperature Combustion of Natural-gas
Creator Dearden, L. M.; Hedley, J. T.; Pourkashanian, Mohamed; Williams, Alan; Yap, L. T.
Publisher Digitized by J. Willard Marriott Library, University of Utah
Date 1994
Spatial Coverage presented at Kingston, Canada
Abstract The predictions of the levels of NOx produced during high temperature combustion resulting from either air preheat or by the use of oxygen, can be undertaken with reasonable accuracy as long as certain precautions are taken. Particular attention is paid towards three areas. Firstly, the fact that NOx is particularly sensitive to temperature and its variation. The ways in which this is computed for oxygen/natural-gas flames and for a steel regenerative furnace are described including the use of equilibrium consideration. Secondly, the importance of NOx chemistry and the sensitivity of the pdf used to describe the thermal processes are outlined. Thirdly, the role ofN2 is discussed. In preheated air/fuel flames the N2 levels are high whilst in oxy/fuel combustion only trace sources are present, via the O2, fuel or leaks. The consequences of this are outlined. Two examples will be given in detail: a steel industry regenerative furnace and an oxy/natural gas ladle preheat furnace.
Type Text
Format application/pdf
Language eng
Rights This material may be protected by copyright. Permission required for use in any form. For further information please contact the American Flame Research Committee.
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