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Show • shorter time frame for results, • no need for specialized equipment or trained operators. Improvements in computer technology, advances in Computational Fluid Dynamics (CFD), and more robust heat transfer and chemical kinetics models have recently been combined to provide powerful tools for the study of combustion processes. Application of computational techniques in conjunction with advanced C A D / C A M and visualization tools allows the modeler ways to reliably describe complex systems such as oxy-fuel fired flames and industrial furnaces. These techniques also provide better visual descriptions of industrial processes which are valuable to the modeler and to process designers and operators. The accuracy and reliability of modeling results can easily be determined by comparison of calculated results with experimental results, commercial furnace operating results, and published operating results. After this comparison, models can be modified to more accurately describe specific industrial furnace conditions of interest to the modeler. The High Luminosity Burner modeling strategy includes: • Kinetic description of the pyrolysis and oxidation chemical reaction pathways associated with natural gas heating in the Fuel Preheating Zone, • Study of the formation and growth of soot precursors, soot nuclei, and soot particles relative to controllable independent variables, • Determination of preferred conditions for natural gas preheating and for soot and soot precursor formation, • Preparation of an idealized model to predict radiative heat transfer to the load from an oxy-fiiel flame with and without soot addition, • Calculation of flame and refractory temperatures and heat transfer rates for a range of soot concentrations and determination of optimum soot concentration for highest heat transfer rates, Numerous models of methane combustion are described in the literature. These models range from very simple kinetic models to complex multi-reaction relations. Simple models are described by up to 20 reactions and involve fewer than 10 major combustion species (i.e. C O 2, H2O, H 2 , C O , C 2 H 2 , H and O H ) . 5 The complex models include detailed kinetics of all major and minor flame species and typically involve reaction schemes with 75 to 150 reactions and 30 to 50 reaction species.6 Both types of models can be employed for predicting major species concentrations, temperature profiles and laminar and turbulent flame flow patterns. In the present work, efforts in chemical kinetics modeling include an accurate prediction of the 5 |
