Flame inhibition by methyl bromide

Conference · Thu Aug 27 04:00:00 EDT 1981

OSTI ID:6255206

Westbrook, C K

A numerical flame model is used to investigate the inhibition of laminar hydrocarbon-air and hydrocarbon-oxygen flames by methyl bromide, CH/sub 3/Br. The detailed kinetic mechanism consists of 97 elementary reactions involving 30 chemical species and is based on a previous model for flame inhibition by HBr to which have been added reactions in which Br atoms are abstracted from CH/sub 3/Br. The resulting mechanism is validated by comparison between experimental data on low pressure CH/sub 4/-O/sub 2/-CH/sub 3/Br flames. Subsequently, the model is used to predict the response of a series of fuel-air mixtures to the addition of varying amounts of CH/sub 3/Br. Fuels considered include methane, methanol, and ethylene. It is found that the inhibition efficiency depends on fuel-air equivalence ratio, pressure and fuel type. The kinetic factors responsible for this behavior are discussed in detail.

• Research Organization: Lawrence Livermore National Lab., CA (USA)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 6255206
• Report Number(s): UCRL-86456; CONF-811041-1; ON: DE81030995
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400800* -- Combustion
Pyrolysis
& High-Temperature Chemistry
AIR
ALCOHOLS
ALKANES
ALKENES
BROMINATED ALIPHATIC HYDROCARBONS
CHEMICAL REACTION KINETICS
COMBUSTION KINETICS
COMBUSTION PROPERTIES
DISPERSIONS
ELEMENTS
ETHYLENE
FLAMES
FLUID FLOW
FLUIDS
FUEL-AIR RATIO
GASES
HALOGENATED ALIPHATIC HYDROCARBONS
HYDROCARBONS
HYDROXY COMPOUNDS
INHIBITION
KINETICS
LAMINAR FLOW
MATHEMATICAL MODELS
METHANE
METHANOL
METHYL BROMIDE
MIXTURES
NONMETALS
ORGANIC BROMINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
OXYGEN
REACTION KINETICS