Chemical structure and kinetic model of methylene chloride, methane, oxygen flame.

摘要

The chemical structure of atmospheric-pressure, premixed, laminar of Ch{dollar}sb2{dollar}/Cl{dollar}sb2{dollar}/CH{dollar}sb4{dollar}O{dollar}sb2{dollar}/Ar fuel rich (sooting) and CH{dollar}sb2{dollar}Cl{dollar}sb2{dollar}/O{dollar}sb2{dollar}/Ar fuel lean flames have been investigated by using a flat-flame burner as a function of equivalence ratio and chlorine hydrogen ratio.; For fuel rich flames, species mole fraction profiles were determined by hot-water-cooled micro-probe coupled to an on-line GC/MS. In addition to those of the reactants and diluent, the mole fraction profiles for CO, CO{dollar}sb2{dollar}, H{dollar}sb2{dollar}, HCl, H{dollar}sb2{dollar}O, CH{dollar}sb3{dollar}Cl, CHCl{dollar}sb3{dollar}, C{dollar}sb2{dollar}H{dollar}sb2{dollar}, C{dollar}sb2{dollar}H{dollar}sb4{dollar}, C{dollar}sb2{dollar}H{dollar}sb6{dollar}, C{dollar}sb2{dollar}H{dollar}sb3{dollar}Cl, 1,2-C{dollar}sb2{dollar}H{dollar}sb2{dollar}Cl{dollar}sb2{dollar}, 1,1-C{dollar}sb2{dollar}H{dollar}sb2{dollar}Cl{dollar}sb2{dollar}, C{dollar}sb2{dollar}HCl{dollar}sb3{dollar}, 1,1,2,2-C{dollar}sb2{dollar}H{dollar}sb2{dollar}Cl{dollar}sb4{dollar}, C{dollar}sb4{dollar}H{dollar}sb2{dollar}, C{dollar}sb4{dollar}H{dollar}sb4{dollar}, C{dollar}sb6{dollar}H{dollar}sb6{dollar} and C{dollar}sb6{dollar}H{dollar}sb5{dollar}Cl were determined.; For fuel lean flames, the mole fraction profiles of CH{dollar}sb2{dollar}Cl{dollar}sb2{dollar}, O{dollar}sb2{dollar}, Ar, CO, CO{dollar}sb2{dollar}, Cl{dollar}sb2{dollar}, HCl, H{dollar}sb2{dollar}O, CCl{dollar}sb4{dollar}, CHCl{dollar}sb3{dollar}, C{dollar}sb2{dollar}H{dollar}sb2{dollar}, CH{dollar}sb2{dollar}O, COCl{dollar}sb2{dollar}, C{dollar}sb2{dollar}HCl, C{dollar}sb2{dollar}Cl{dollar}sb2{dollar}, 1,2-C{dollar}sb2{dollar}H{dollar}sb2{dollar}Cl{dollar}sb2{dollar}, 1,1-C{dollar}sb2{dollar}H{dollar}sb2{dollar}Cl{dollar}sb2{dollar}, C{dollar}sb2{dollar}HCl{dollar}sb3{dollar}, C{dollar}sb2{dollar}Cl{dollar}sb4{dollar} were generated by on line mass spectrometer.; A detailed chemical kinetic mechanism which has 88 species and 622 reactions was also developed for the combustion of CH{dollar}sb2{dollar}Cl{dollar}sb2{dollar} and with CH{dollar}sb4{dollar}. This mechanism represents a considerable generality and broad utility, since it was used to calculated stable species mole fraction profiles in fuel-rich CH{dollar}sb2{dollar}Cl{dollar}sb2{dollar}/CH{dollar}sb4{dollar}/O{dollar}sb2{dollar} flames as well as fuel lean CH{dollar}sb2{dollar}Cl{dollar}sb2{dollar}/O{dollar}sb2{dollar} flames. The agreement between model prediction and experimental data were generally reasonable. The major reaction pathways responsible for the formation of various stable species were identified via reaction path and sensitivity analysis of the mechanistic model.