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Effect of methane addition to ethylene on the morphology and size distribution of soot in a laminar co-flow diffusion flame
- Source :
- Energy. 166:392-400
- Publication Year :
- 2019
- Publisher :
- Elsevier BV, 2019.
-
Abstract
- The characteristics of soot in the diffusion flames of methane and ethylene under different oxygen concentrations and the influence of mixing methane in ethylene on soot generation were investigated using thermophoretic sampling and subsequent transmission electron microscopy image analysis. The process of soot particle nucleation, surface growth, coagulation, agglomeration and oxidation along the flame axis was analyzed. The variation of soot particle size distribution and aggregate characteristics at different heights along the centerline of the flame at different oxygen concentrations and methane doping ratios were obtained. Results show that the various stages of soot generation in methane flame obviously lags behind the ethylene flame at different oxygen concentrations, and increasing the oxygen concentration makes the various stages of soot formation in the flame advance. A 10% methane doping can promote soot generation at low flame locations. Increasing the doping amount to 30%, the generation of soot can be promoted at high flame locations. The synergistic effect of soot formation in fuel combustion occurs in the above two cases. However, the synergistic effect of the fuel will disappear under high blending ratio conditions. The effect of methane-ethylene at high blend ratios is more like a neutralization effect.
- Subjects :
- Materials science
020209 energy
Diffusion
chemistry.chemical_element
02 engineering and technology
Combustion
medicine.disease_cause
complex mixtures
Oxygen
Industrial and Manufacturing Engineering
Methane
chemistry.chemical_compound
fluids and secretions
020401 chemical engineering
0202 electrical engineering, electronic engineering, information engineering
medicine
0204 chemical engineering
Electrical and Electronic Engineering
reproductive and urinary physiology
Civil and Structural Engineering
Mechanical Engineering
Diffusion flame
Building and Construction
Pollution
humanities
Soot
General Energy
Chemical engineering
chemistry
Particle-size distribution
Limiting oxygen concentration
Subjects
Details
- ISSN :
- 03605442
- Volume :
- 166
- Database :
- OpenAIRE
- Journal :
- Energy
- Accession number :
- edsair.doi...........8c8433e357aca7c24a0deefdaefc0ab7