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Showing 1 to 19 of 19 for “"Methane Combustion"”.
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Ceramic & Metallic Open Cell Foams for the Lean Methane Combustion Reaction: Exploring the Impact of Catalytic Supports
L'abstract è presente nell'allegato / the abstract is in the attachment
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Synthesis, Characterization and Activity of Palladium Catalysts on the Dual Support of Cerium and Aluminum Oxides
… (500 ℃ and 850 ℃) on the catalytic oxidation of methane under lean conditions were investigated. The catalysts were prepared by a combination of impregnation, slurry and vortexing methods. The catalysts had 4.7 wt.% Pd and 10.7 wt.% Ce based on inductively coupled plasma optical emission …
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Catalytic combustion of methane with nanostructured barium hexaaluminate-based materials
Catalytic combustion of methane has been widely studied as an alternative to gasphase homogeneous combustion. It allows combustion to occur at high levels of excess air, leading to more complete reaction and reduced hydrocarbon emissions. It further enables combustion to proceed at lower …
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The Blast Wave Produced by Bursting Spheres With Simultaneous or Delayed Explosion or Implosion of The Contents
… with and without ignition delays. Although the combustion process was modeled after methane combustion, the technique for generalizing to other fuels was presented. The Oppenheim CLOUD computer program with appropriate energy source terms was used to perform all the calculations. The bursting …
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An investigation into the origin, measurement and application of chemiluminescent light emissions from premixed flames
… species CH* and OH* are studied in premixed methane combustion to investigate the possible application of their light emissions in gas turbine combustion monitoring systems. The interpretation of integrated and local chemiluminescence measurements are shown to give important qualitative …
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Performance of Acid-Gas Anaerobic Digestion for Minimization of Siloxane and Hydrogen Sulfide Produced in Biogas for Energy Recovery
… these compounds volatilize and enter the methane gas recovery stream. As the methane is combusted for energy cogeneration, these compounds become oxidized to microcrystalline silicon dioxide and cause damage and potential failure of expensive infrastructure. Adsorption and other catchment …
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Catalytic properties, densification and mechanical properties of nanocrystalline yttria-zirconia-based materials
… (7YZ) nanocrystals to form nanocomposites for methane combustion. These novel catalysts were very active and thermally stable. In particular, 25 wt% Mn203-coated 7YZ and 25 wt% Mn203-doped 7YZ showed remarkably low light-off temperatures of 3750C and 3580C, respectively. These catalysts were …
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Enabling Efficient Uncertainty Quantification of Turbulent Combustion Simulations via Kinetic Dimension Reduction
… uncertainties in kinetic models through combustion simulations can provide important metrics on the reliability and accuracy of a model, but remains a challenging and numerically expensive problem especially for large kinetic mechanisms and expensive turbulent combustion simulations. …
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Chemical simulation of hydrogen generation in a plasma fuel reformer
… of any hydrocarbon. We studied the behavior of methane as fuel and used the GRI methane combustion mechanism in our simulations. The goal was to characterize the reactor to be able to understand and predict its performance for a wide range of operating conditions, such as different flow rates, …
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A Computational Fluid Dynamics Model to Simulate Wood Combustion
… Furthermore, firebrand generation from wood combustion is the primary mechanism for wild land fire spread. In order to predict various performance parameters of residential heaters and predict wood degradation behavior for fire safety, a comprehensive understanding of wood combustion is …
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Computational design, sensitivity analysis and optimization of fuel reforming catalytic reactor
In this research, the catalytic combustion of methane is numerically investigated using an unstructured, implicit, fully coupled finite volume approach. The nonlinear system of equations is solved by Newton’s method. The catalytic partial oxidation of methane over a rhodium catalyst in one channel …
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A density functional theory study into the mechanism and reactivity in heterogeneous system
… on three different types of NiO surface. The methane combustion process is investigated as a probe on these surfaces. In this part, activation of methane is studied under different coordination environment of Ni2+, such as sheet NiO, cubic NiO and octahedral NiO represented by NiO(110), …
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Advanced PID Control Optimisation and System Identification for Multivariable Glass Furnace Processes by Genetic Algorithms
… In addition, a reduction in excess oxygen within methane combustion guidelines will assure that undesirable emissions are in control throughout the combustion process. The efficiencies of the proposed technique were supported by a number of simulation results applying the three SGAs controller …
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Large eddy simulations of hydrogen/methane jets in crossflows under engine-relevant conditions
… requires careful integration into existing combustion systems, particularly through fuel-flexible strategies such as hydrogen-methane blends. Among various fuel injection strategies, the jet in crossflow (JICF) presents a promising configuration for hydrogen in gas turbine applications, …
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A study on the flow characteristics of an industrial radiant tube burner
… validated modelling study of the flow of combustion air in an industrial radiant tube burner (RTB). The RTB is used typically in industrial heat treating furnaces. The work has been initiated because of the need for improvements in burner lifetime and performance which are related to the …
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High Fidelity Chemistry And Radiation Modeling For Oxy-Combustion Scenarios
… the high CO<sub>2</sub> concentrations in an oxy-combustion atmosphere, several refined gas-phase chemistry and radiative property models have been formulated for laminar to highly turbulent systems. This thesis examines the accuracies of several chemistry and radiative property models employed in …
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Oxygen Transport Membrane Reactors for Oxy-Fuel Combustion and Carbon Capture Purposes
… reactors (OTMs) for the application of oxy-fuel combustion. This is done by evaluating the material properties and oxygen permeability of different OTM compositions subjected to a variety of operating conditions. The scope of this work consists of three components: (1) evaluate the oxygen …
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Investigation of atomization mechanisms and flame structure of a twin-fluid injector for different liquid fuels
… in the near field of the injector. First, the combustion of diesel, biodiesel and straight vegetable oil (VO) using a Flow Blurring (FB) injector is investigated. Measurements of gas temperature and CO and NOx concentrations at various axial and radial locations of the combustor are acquired …
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Catalytic Oxidation of Methane Over Alumina Supported Palladium Oxides
… for low temperature catalytic oxidation of methane. The catalysts were prepared by various methods and then characterized and screened to select the best catalyst for further studies. A 5% (wt/wt) Pd/y-AhCb catalyst prepared by an improved vortex-assisted incipient wetness method showed the …