Abstract
Four rich premixed C2H4/O2 flames diluted with Ar and CO2 (total 30% in volume) at low pressure (4.0 kPa), with respective CO2 proportions of 0%, 10%, 20% and 29%, were studied using synchrotron vacuum ultraviolet photoionization mass spectrometry. A kinetic model with 176 species and 642 reactions was developed. Based on the rate of production analysis and the sensitivity analysis, the reaction CO + OH = CO2+ H plays a significant role in the reduction of polycyclic aromatic hydrocarbons (PAHs) formation in the flames with CO2 addition. By increasing CO2 proportion, the formation of 1CH2, 3CH2, and CH is inhibited and the concentrations of C2H2,C3H3 and C4H4, which are soot precursors, are reduced as well as PAHs.
Original language | English (US) |
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Pages (from-to) | 1787-1791 |
Number of pages | 5 |
Journal | Kung Cheng Je Wu Li Hsueh Pao/Journal of Engineering Thermophysics |
Volume | 34 |
Issue number | 9 |
State | Published - 2013 |
Externally published | Yes |
Keywords
- CO addition
- Kinetic modelling
- Premixed ethylene flame
- SVUV-PIMS
- Thermal and chemical effects
ASJC Scopus subject areas
- General Materials Science
- Condensed Matter Physics
- Mechanical Engineering