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CreatorTitleDescriptionSubjectDate
1 Pershing, David W.Bench and pilot scale process evaluation of reburning for in-furnace NOx reductionThis paper describes a combined experimental and theoretical study which was undertaken to quantify the impact of fuel and process parameters on reburning effectiveness and provide the scaling information required for commercial application of reburning under highly varied industrial conditions. Ini...Reburning; Nitrogen oxides reduction; Staged fuel injection1986
2 Lighty, Joann; Sarofim, Adel F.Carbon dioxide effects on metal vaporization during coal combustionCoal combustion products may take one of two forms. Residual ash (> 1 micron) is formed by particle shrinkage and breaking during combustion. Some material will vaporize and later recondense. During recondensation, these molecules have a high affinity for submicron particles because of the large sur...Coal combustion products; Metal vaporization; Carbon dioxide; Residual ash2001
3 Ring, Terry Arthur; Eddings, Eric G.; Sarofim, Adel F.Determination of soot refractive index as a function of height in an inverse diffusion flameWith the scope of combustion diagnostics increasing, it is becoming ever more important for some of the more basic physical properties of soot to be addressed. Soot refractive index values were obtained as a function of height in a benzene inverse diffusion flame (IDF). The IDF was chosen for ease i...Inverse diffusion flame2007
4 Eddings, Eric G.; Sarofim, Adel F.Experimental study of burning rate in jet-fuel pool firesExperiments were carried out in a 30 cm diameter pool fire, for both transient and steady-state conditions, utilizing jet fuel, Norpar-15, and a surrogate mixture of hydrocarbons that simulates jet-fuel behavior in a pool fire. Steady state pool fire tests match previous results well. The transient ...Pool fires; Jet propulsion fuel; Norpar-152004
5 Pershing, David W.Formation and control of NO emissions from coal-fired spreader-stoker boilersStoker coal-fired furnaces are significant in terms of coal consumption and environmental impact; however, they have received little research attention. This paper describes the results of a study on the formation and control of nitrogen oxides in coal-fired spreader-stoker systems. Three scales of...Stoker coal-fired furnaces1983
6 Voth, Gregory Alan; Sarofim, Adel F.Identification of pathways for polyaromatic growth using molecular dynamicsReaction pathways for polyaromatic growth in combustion environments are explored theoretically using molecular dynamic techniques. The reaction systems considered include cyclization reactions that involve H atom migration. Specifically we examine the absorption of acetylene on an aromatic ring rad...2004
7 Pershing, David W.Influence of coal composition on the fate of volatile and char nitrogen during combustionFifty coals from North America, Europe, Asia, South Africa and Australia were burned in a 21 kW, refractory-lined tunnel furnace to determine the influence of coal properties on the fate of volatile and char nitrogen. Excess air fuel NO emissions (as determined by combustion in Ar/02/C02) ranged fro...Coal composition; Char nitrogen; Volatile nitrogen; NO emissions1982
8 Pershing, David W.Influence of fuel composition and flame temperature on the formation of thermal and fuel NOx in residual oil flamesA 900 kw model package boiler and a 20 kw laboratory tunnel furnace were used to study fuel and thermal NO, formation during heavy oil combustion. Package boiler results indicated that atomizer design, spray/ flow field interactions, and fuel composition were significant, dependent parameters. These...Residual oil flames1979
9 Pershing, David W.Mechanisms of NOx formation and control: alternative and petroleum-derived liquid fuelsPetroleum-, coal- and shale-derived liquid fuels were burned in a downfired tunnel furnace to assess the impact of fuel properties on the formation and control of NOx emissions. A nitrogen-free oxidant mixture (Ar, C02 , 02) was used to isolate fuel NOx formation. Under excess air conditions fuel N...Exhaust emissions; Alternative fuels; Petroleum-derived liquid fuels1981
10 Eddings, Eric G.; Sarofim, Adel F.Modeling benzene and naphthalene formation in a premixed propylene flameThe Utah Surrogate Mechanism was used to model a fuel-rich, non-sooting premixed laminar flame of propylene at 5000 Pa with an equivalence ratio of 2.32. The simulation results were found to be satisfactory in comparison with the experimental data. For example, the measured concentration profiles of...Utah Surrogate Mechanism; Propylene; Combustion modeling; Benzene formation; Naphthalene formation2005
11 Lighty, Joann; Sarofim, Adel F.; Eddings, Eric G.Modeling the coagulation of charged particlesOne important mechanism in the growth of soot particles is to understand the role of particle charge in the coagulation of the particles. A previously developed model has been extended to include the coagulation of charged particles. The model includes neutral particles and charged particles (up to ...Charged particles; Flame ionization; Modeling2004
12 Eddings, Eric G.NOx emissions from intermediate-temperature combustion of steel-industry by-product gasesA study of NOx emissions from the combustion of coke-oven gas and blast-furnace gas (steel industry by-product gases) was undertaken using detailed kinetic modeling to elucidate the pathways for NOx formation. The study was performed at the intermediate temperatures (1200-1400K) and 1 atm, which rep...2004
13 Sarofim, Adel F.Numerical combustion of aviation fuel part I: a cross-model comparison of n-heptane premixed flameFour different n-heptane mechanisms were used to simulate a fuel rich n-heptane premixed flame and their results were compared with experimental measurements. In addition to discussion of the numerical performance of each mechanism, flux analysis coupled with the atomic distribution technique was us...Aviation fuel; n-heptane; Premixed flame2003
14 Pershing, David W.; Slaughter, David MichaelParameters influencing the evolution and oxidation of sulfur in suspension phase coal combustionStoker coal-fired boiler furnaces are significant in terms of coal consumption and environmental impact; however, they have received relatively little research attention. This paper describes the results of a two-year study on the formation of sulfur oxides in the suspension phase of a coal-fired s...Stoker coal-fired furnaces1983
15 Eddings, Eric G.; Sarofim, Adel F.; Pershing, David W.Production of nitrogen oxide during char oxidation at pulverized coal combustion conditionsMore stringent regulations for NOx control in pulverized coal combustors have made the scientific community focus on sources of emissions that were traditionally considered less relevant to the overall NOx production. The oxidation to NO of the nitrogen that is organically bound to the char is one o...2001
16 Pershing, David W.; Wendt, Jost O. L.Pulverized coal combustion: NOx formation mechanisms under fuel rich and staged combustion conditionsA 2 Kg/h pulverized fuel one dimensional flame combustor was used to determine time resolved NO profiles under fuel rich and staged combustion conditions. Seven solid fuels, including two coal chars, were investigated. Results show that at all fuel rich conditions NO is formed rapidly and then is ...Flame; Composition; Reaction1979
17 Pershing, David W.; Wendt, Jost O. L.Pulverized coal combustion: the influence of flame temperature and coal composition on thermal and fuel NOxA laboratory combustor was used to investigate the factors that influence the conversion of fuel nitrogen in coal during coal combustion. Fuel NO was isolated by experimentation utilizing Argon / Oxygen / Carbon Dioxide mixtures as the oxidant, and care was taken to compare cases with air at matche...Fuel nitrogen; Flame temperature; Coal composition1977
18 Truong, Thanh; Sarofim, Adel F.Quantum mechanic study of high molecular mass compounds in combustion conditionsExperimental studies on soot formation show interesting trends that can only be explained by a polymerization pathway. These experimental findings are reviewed and ab initio calculations are used to evaluate possible mechanistic pathways. A sequence of chemical reactions between aromatic compounds a...High molecular mass compounds; Quantum mechanics; Soot formation2001
19 Sarofim, Adel F.Simulation of soot formation using particle dynamics with one dimensional nucleation modeTwo soot formation models using particle dynamics with one-dimensional nucleation mode directly coupled with gas phase chemistry are tested on three ethylene and three methane laminar premixed flames. These models demonstrate strength in the prediction of concentration profiles of major combustion p...Soot formation models; Particle dynamics; One dimensional nucleation mode; Combustion chemistry2004
20 Eddings, Eric G.; Smith, Philip J.Soot volume fraction from extinction in JP-8 and heptane pool firesTotal extinction measurements from a multiple beam experiment using a 10mW laser diode are presented and compared to calculate soot volume fraction in heavily sooting pool fires from a 150 mm diameter pan of Jet Propulsion fuel 8 (JP-8) and heptane. Trends in attenuation are critiqued for the t...Soot volume fraction; Heptane pool fires; JP-8 pool fires; Heavily sooting pool fires; Laser diagnostics2005
21 Veranth, John M.; Pershing, David W.; Sarofim, Adel F.Sources of unburned carbon in the fly ash produced from low-NOx pulverized coal combustionThe unburned carbon in the fly ash produced from low-NOx pulverized coal combustion is shown to consist of a mixture of soot and coal char. The soot was identified by the presence of chains or aggregates of 10-50-nm-diameter primary particles in electron microscope images of both laboratory sample...Unburned carbon; Char1998
22 Smith, Philip J.State space sensitivity to a prescribed probability density function shape in coal combustion systems: joint β-PDF versus clipped Gaussian PDFThe turbulent transport of three coal off-gas mixture fractions is coupled to a prescribed joint //-probability- density-function (//-PDF) mixing model. This physical transport and subgrid joint //-PDF mixing model is used to explore the incorporation of coal off-gas compositional disparities betwe...Off-gas stream; β-PDF; Char oxidation2000
23 Eddings, Eric G.; Sarofim, Adel F.Thermal behavior of a high-energy material immersed in a fireOne of the uncertainties in the calculations of time-to-explosion for containers of high-energy materials immersed in fires is that of the thermal boundary at the container-explosive interface. Understanding this interface is critical in evaluating risks, safety issues and prevention mechanisms. In ...2004
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