Effects of diluents on the flame structure and radiation of propane jet flames in a concentric stream. [Effects of addition of CO/sub 2/ and N/sub 2/ to fuel and air stream]

Journal Article · Sat Jan 01 00:00:00 EST 1977 · Combust. Sci. Technol.; (United States)

DOI:https://doi.org/10.1080/00102207708946780· OSTI ID:7309148

Gollahalli, S R

Data are presented on the structure of propane diffusion flames burning in a concentric stream of air, with and without the addition of diluents (carbon dioxide and nitrogen) to the fuel jet and air stream. The flame length and the fraction of heat release radiated are documented as functions of diluent concentrations in fuel jet and air stream. The effects of diluent addition on the temperature profiles, composition profiles showing species CO/sub 2/, H/sub 2/O, CO, N/sub 2/, O/sub 2/, C/sub 3/H/sub 8/, NO and pyrolysis species of C/sub 3/H/sub 8/ and axial profiles of radiant power emitted are also presented. The results show that the diluents reduce flame length, stability, radiation and concentrations of nitric oxide in the flames. The effects of diluents on the flame structure can be attributed primarily to the changes in concentrations of various species rather than to the changes in temperature. The problems of using flue gas recirculation in large combustion systems are indicated.

• Research Organization: Univ. of Oklahoma, Norman
• OSTI ID: 7309148
• Journal Information: Combust. Sci. Technol.; (United States), Vol. 15:3-4
• Country of Publication: United States
• Language: English

Related Subjects

10 SYNTHETIC FUELS
PROPANE
FLAMES
AIR POLLUTION CONTROL
CARBON DIOXIDE
CONFIGURATION
EXHAUST RECIRCULATION SYSTEMS
LUMINOSITY
NITROGEN
RADIANT HEAT TRANSFER
SOOT
STABILITY
ALKANES
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
CRYOGENIC FLUIDS
ELEMENTS
ENERGY TRANSFER
EQUIPMENT
EXHAUST SYSTEMS
FLUIDS
HEAT TRANSFER
HYDROCARBONS
NONMETALS
OPTICAL PROPERTIES
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
POLLUTION CONTROL
POLLUTION CONTROL EQUIPMENT
090110* - Hydrocarbon Fuels- Properties- (1979-1989)