Numerical simulation of hydrocarbon fuel combustion processes in a burner with axial injection of steam jet

Abstract To solve the gaseous hydrocarbon fuel combustion process control and diagnostics problem, it is proposed to apply the laser-spark emission spectrometry methods. In propane-air mixture combustion, three modes are investigated: stoichiometric combustion, an enriched mixture, and a lean mixture. A laboratory stand has been developed to study combustion processes by laser-spark emission spectrometry. The plasma radiation spectral characteristics an experimental study results formed in a flame when exposed to laser radiation are presented.

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WET BURNING – THE MODERN TREND IN ENVIRONMENTAL BENIGN FUEL COMBUSTION AND IN SOLUTION TO THE PROBLEM OF SUSTAINABLE DEVELOPMENT OF THE POWER GENERATION

Alternative Energy and Ecology (ISJAEE) ◽

10.15518/isjaee.2018.25-30.096-117 ◽

2018 ◽

pp. 96-117 ◽

Cited By ~ 2

Author(s):

B. S. Soroka

Keyword(s):

Numerical Simulation ◽

Nitrogen Oxides ◽

Chemical Kinetics ◽

Fuel Combustion ◽

Transport Processes ◽

Cfd Modeling ◽

Furnace Chamber ◽

Modern Trend ◽

Atmospheric Air ◽

No Formation

The article considers the role and place of water and water vapor in combustion processes with the purpose of reduction the effluents of nitrogen oxides and carbon oxide. We have carried out the complex of theoretical and computational researches on reduction of harmful nitrogen and carbon oxides by gas fuel combustion in dependence on humidity of atmospheric air by two approaches: CFD modeling with attraction of DRM 19 chemical kinetics mechanism of combustion for 19 components along with Bowman’s mechanism used as “postprocessor” to determine the [NO] concentration; different thermodynamic models of predicting the nitrogen oxides NO formation. The numerical simulation of the transport processes for momentum, mass and heat being solved simultaneously in the united equations’ system with the chemical kinetics equations in frame of GRI methane combustion mechanism and NO formation calculated afterwards as “postprocessor” allow calculating the absolute actual [CO] and [NO] concentrations in dependence on combustion operative conditions and on design of furnace facilities. Prediction in frame of thermodynamic equilibrium state for combustion products ensures only evaluation of the relative value of [NO] concentration by wet combustion the gas with humid air regarding that in case of dry air – oxidant. We have developed the methodology and have revealed the results of numerical simulation of impact of the relative humidity of atmospheric air on harmful gases formation. Range of relative air humidity under calculations of atmospheric air under impact on [NO] and [CO] concentrations at the furnace chamber exit makes φ = 0 – 100%. The results of CFD modeling have been verified both by author’s experimental data and due comparing with the trends stated in world literature. We have carried out the complex of the experimental investigations regarding atmospheric air humidification impact on flame structure and environmental characteristics at natural gas combustion with premixed flame formation in open air. The article also proposes the methodology for evaluation of the nitrogen oxides formation in dependence on moisture content of burning mixture. The results of measurements have been used for verification the calculation data. Coincidence of relative change the NO (NOx) yield due humidification the combustion air revealed by means of CFD prediction has confirmed the qualitative and the quantitative correspondence of physical and chemical kinetics mechanisms and the CFD modeling procedures with the processes to be studied. A sharp, more than an order of reduction in NO emissions and simultaneously approximately a two-fold decrease in the CO concentration during combustion of the methane-air mixture under conditions of humidification of the combustion air to a saturation state at a temperature of 325 K.

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Development and Optimization of a Comprehensive Kinetic Model of Hydrocarbon Fuel Combustion

10.21236/ada422042 ◽

2004 ◽

Author(s):

Hai Wang

Keyword(s):

Kinetic Model ◽

Hydrocarbon Fuel ◽

Fuel Combustion

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Stabilization of liquid hydrocarbon fuel combustion by using a programmable microwave discharge in a subsonic airflow

Plasma Physics Reports ◽

10.1134/s1063780x12050054 ◽

2012 ◽

Vol 38 (6) ◽

pp. 503-512 ◽

Cited By ~ 21

Author(s):

P. V. Kopyl ◽

O. S. Surkont ◽

V. M. Shibkov ◽

L. V. Shibkova

Keyword(s):

Microwave Discharge ◽

Hydrocarbon Fuel ◽

Liquid Hydrocarbon ◽

Fuel Combustion

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SPECTRAL DIAGNOSTICS OF THE HYDROCARBON FUEL COMBUSTION PROCESS

Kontrol Diagnostika ◽

10.14489/td.2021.10.pp.012-017 ◽

2021 ◽

pp. 12-17

Author(s):

M. A. Vaganov

Keyword(s):

Combustion Process ◽

Hydrocarbon Fuel ◽

Combustion Products ◽

Combustible Mixture ◽

Fuel Combustion ◽

Propane Combustion ◽

Gaseous Hydrocarbon ◽

Spectral Bands ◽

Air Supply ◽

Spectral Diagnostics

It is proposed to use the methods of applied optical spectroscopy to solve the problem of control and diagnostics of gaseous hydrocarbon fuel combustion in this work. The results of an experimental study of spectroscopic informative parameters characterizing the propane combustion process are presented for three modes: combustion of pure propane without air supply, stoichiometric combustion and combustion with a change in the amount of supplied air relative to stoichiometric combustion. As a result of the experiment, it was found that the most intense bands in the emission spectrum of the flame arising from the combustion of propane correspond to the spectral bands of radicals of combustion products: OH, CH, and C2. While the intensities of various systems of bands in the flame spectrum depend significantly on the composition of the combustible mixture.

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