Combustor flame flashback
Premixed-prevaporized combustors operate with uniformly lean fuel/air ratios and consequently produce lower emission levels of NO/sub x/ and soot than diffusion flame combustors. For this reason, they are candidates for advanced automotive and aircraft gas turbines. Flashback, a problem that occurs in premixed-prevaporized combustors, is the upstream propagation of the flame from the combustor into the premixing tube. Not only does flashback change the combustion process from premixed burning to diffusion burning, thus creating more pollutants, but it also inflicts considerable damage on the fuel injector, premixing tube and other equipment upstream. Therefore, before implementing the premixed combustor, an understanding of the flashback mechanisms should be achieved and a scheme for preventing its occurrence has to be found.
- Research Organization:
- Case Western Reserve Univ., Cleveland, OH (USA)
- DOE Contract Number:
- AI01-77CS51040
- OSTI ID:
- 6396180
- Report Number(s):
- DOE/NASA-0290-1; NASA-CR-174961; ON: DE86003906
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
330700* -- Advanced Propulsion Systems-- Emission Control
AUTOMOBILES
CHALCOGENIDES
CHEMICAL REACTIONS
COMBUSTION
COMBUSTORS
DIFFUSION
EFFICIENCY
EXHAUST GASES
FLAMES
FLUIDS
GAS TURBINES
GASEOUS WASTES
GASES
MACHINERY
NITRIC OXIDE
NITROGEN COMPOUNDS
NITROGEN OXIDES
OXIDATION
OXIDES
OXYGEN COMPOUNDS
PARAMETRIC ANALYSIS
THERMOCHEMICAL PROCESSES
TURBINES
TURBOMACHINERY
VEHICLES
WASTES