Modeling study of burner and furnace performance for oxygen enriched combustion systems
A 2-D finite difference model was applied to investigate the effects of O2 enrichment and combustion with pure oxygen on performance of two burners in two different pilot-scale furnaces fired with natural gas. The predictions yielded not only data on overall heat transfer performance depending on burner type and operating conditions, but also allowed a detailed analysis of the interaction between combustion and burner and furnace aerodynamics. Predictions of gas temperature distributions and refractory surface temperatures were compared to corresponding measured distributions. In all cases predicted performance followed the measured trends. Predictions and measurements clearly show that, by adjusting the thermal input, combustion with enriched air or pure O2 can be applied with a minimum change in furnace gas temperature distribution and refractory temperatures. However, in spite of the considerable increase in efficiency, absolute heat transfer is somewhat reduced for same peak refractory temperatures. Predictions and measurements showed a moderate scale effect on performance for both burner types studied which is primarily attributed to different refractory wall characteristics of the two furnaces. The modeling study allowed a valuable insight into the oxygen flame behavior. The knowledge gained will be used in Phase II of the DOE project, in which full scale furnace performance for oxy-fuel flames will be investigated. 7 refs., 16 figs., 3 tabs.
- Research Organization:
- Energy and Environmental Research Corp., Irvine, CA (USA)
- DOE Contract Number:
- AC07-76ID01570
- OSTI ID:
- 7155015
- Report Number(s):
- EGG-M-88086; CONF-8805192-1; ON: DE88016955
- Resource Relation:
- Conference: AFRC spring management meeting, Toronto, Canada, 10 May 1988; Other Information: Portions of this document are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
BURNERS
MATHEMATICAL MODELS
COMBUSTION
OXYGEN
OXYGEN ENRICHMENT
FURNACES
NATURAL GAS
AIR
FINITE DIFFERENCE METHOD
HEAT TRANSFER
PERFORMANCE
TEMPERATURE DISTRIBUTION
TWO-DIMENSIONAL CALCULATIONS
CHEMICAL REACTIONS
ELEMENTS
ENERGY SOURCES
ENERGY TRANSFER
ENRICHMENT
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GASES
ITERATIVE METHODS
NONMETALS
NUMERICAL SOLUTION
OXIDATION
THERMOCHEMICAL PROCESSES
034000* - Natural Gas- Combustion