Flame structure studies of rich ethylene–oxygen–argon mixtures doped with CO2, or with NH3, or with H2O

Chemical Kinetic Modeling of Soot Precursors Formation Characteristics in Ethylene Oxidation

“…In order to better simulate the properties of main intermediate and soot precursors in C 2 H 4 /O/Ar premixed flames. The simulation is conducted for premixed flames C 2 H 4 /O/Ar at P = 0.05 atm pressure and Φ = 2.5 equivalence ratio using different gas-phase models (Marinov mechanism 15,16 and Dagaut mechanism 17 ) and the calculated results and the experimental data 19,20 were compared and analyzed ( Figs. 4-8).…”

“…This paper performed several modeling and validation for flame structure and some intermediate (soot precursors) of fuel-rich combustion, premixed C 2 H 4 /O 2 /Ar flame at different pressures (0.03-0.05 atm) and equivalence ratios (1-2.5). First of all, a simulation is conducted at pressures (0.03-0.05 atm) and equivalence ratios (1-2.5) using Marinov et al 15,16 mechanism and comparing representative species to experimental data 18,19 to prove the reasonableness of the simulation. Then on this basis, under condition of P = 0.05 atm, T 0 = 298 K, equivalence ratio Φ = 2.5, calculate ethylene flame structure and concentrations of main intermediate and compare simulation results to experimental data in the ref.…”

“…Based on above simulation method, other kinetics modeling will go on used Marinov [15][16] mechanism and Dagaut 17 mechanism to predict and analyze on intermediates in ethylene oxidation flames. Experimental data [19][20] about C2H4/O/Ar premix flame under condition of P = 0.05 atm, Φ = 2.5 is from reference [19][20] which focuses on the effects additions of CO2, NH3 and H2O on C2H4/O2/Ar flame structure and soot formation precursors. The measuring way is also MBMS.…”

Demonstration of a burner for the investigation of partially premixed low-temperature flames

“…They are often stabilized on water-cooled porous-plug burners [23], originally designed to determine laminar flame speeds. Numerous investigations of flat flames established with commercial or home-built porous-plug burners have been published, and some recent examples are described in [20,[27][28][29][30][31]. These burners have found wide-spread application in combustion chemistry studies because the local composition in the flame with all major and intermediate species can be measured as a function of a single coordinate, the distance from the burner.…”

Experimental and kinetic modeling study of the oxy-fuel oxidation of natural gas, CH4 and C2H6

“…[5,6]. The effect of CO 2 as an additive (<40% CO 2 ) on the oxidation of gaseous fuels has been analyzed in flames [7][8][9][10][11][12], flow reactor studies [13], stirred reactor works [14,15] and IC-engines [16]. The majority of the authors explain that the presence of CO 2 plays a chemically inhibiting role that reduces the overall rate of combustion through the CO 2 + H CO + OH reaction, which competes for H radicals with the most important chain branching reaction in combustion processes, H + O 2 O + OH.…”