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Title: The structure of diffusion flames burning pure, binary, and ternary solutions of methanol, heptane, and toluene

Abstract

The structure of counterflow diffusions flames burning heptane, toluene, binary solutions of methanol and toluene, and heptane and toluene, and ternary solutions of methanol, heptane, and toluene is characterized in the vicinity of extinction. Composition profiles of stable species were measured in these flames by use of gas sampling with quartz microprobes and analyzed by use of on-line, two column gas chromatography. Temperature profiles were measured by use of coated thermocouples. A number of compounds were observed during pyrolysis of the fuel. Experimental results were analyzed by using the mixture fraction (conserved scalar) as the independent variable. Results show that for a diffusion flame burning heptane the approximation that the Lewis numbers for all species are approximately equal to unity is valid. When the composition profiles for major chemical species and temperature profiles are plotted with mixture fraction as the independent variable, the maximum value of the concentration of the major stable species and the maximum value of the temperature were found to occur on the rich side of stoichiometry.

Authors:
;
Publication Date:
Research Org.:
Dept. of Applied and Engineering Sciences/Chemical Engineering, Univ. of California, San Diego, La Jolla, CA 92093
OSTI Identifier:
6436539
Resource Type:
Journal Article
Journal Name:
Combust. Flame; (United States)
Additional Journal Information:
Journal Volume: 68:3
Country of Publication:
United States
Language:
English
Subject:
02 PETROLEUM; 10 SYNTHETIC FUELS; 37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; FLAMES; GAS CHROMATOGRAPHY; TEMPERATURE GRADIENTS; HEPTANE; COMBUSTION KINETICS; METHANOL; TOLUENE; DATA ANALYSIS; DIFFUSION; FLAME PROPAGATION; GRAPHS; LIQUID FUELS; PYROLYSIS; SOLUTIONS; STOICHIOMETRY; TEMPERATURE MEASUREMENT; THERMOCOUPLES; ALCOHOLS; ALKANES; ALKYLATED AROMATICS; AROMATICS; CHEMICAL REACTION KINETICS; CHEMICAL REACTIONS; CHROMATOGRAPHY; DECOMPOSITION; DISPERSIONS; FUELS; HYDROCARBONS; HYDROXY COMPOUNDS; KINETICS; MEASURING INSTRUMENTS; MIXTURES; ORGANIC COMPOUNDS; REACTION KINETICS; SEPARATION PROCESSES; THERMOCHEMICAL PROCESSES; 025000* - Petroleum- Combustion; 090210 - Alcohol Fuels- Properties- (1976-1989); 400800 - Combustion, Pyrolysis, & High-Temperature Chemistry

Citation Formats

Hamins, A, and Seshadri, K. The structure of diffusion flames burning pure, binary, and ternary solutions of methanol, heptane, and toluene. United States: N. p., 1987. Web. doi:10.1016/0010-2180(87)90006-X.
Hamins, A, & Seshadri, K. The structure of diffusion flames burning pure, binary, and ternary solutions of methanol, heptane, and toluene. United States. https://doi.org/10.1016/0010-2180(87)90006-X
Hamins, A, and Seshadri, K. Mon . "The structure of diffusion flames burning pure, binary, and ternary solutions of methanol, heptane, and toluene". United States. https://doi.org/10.1016/0010-2180(87)90006-X.
@article{osti_6436539,
title = {The structure of diffusion flames burning pure, binary, and ternary solutions of methanol, heptane, and toluene},
author = {Hamins, A and Seshadri, K},
abstractNote = {The structure of counterflow diffusions flames burning heptane, toluene, binary solutions of methanol and toluene, and heptane and toluene, and ternary solutions of methanol, heptane, and toluene is characterized in the vicinity of extinction. Composition profiles of stable species were measured in these flames by use of gas sampling with quartz microprobes and analyzed by use of on-line, two column gas chromatography. Temperature profiles were measured by use of coated thermocouples. A number of compounds were observed during pyrolysis of the fuel. Experimental results were analyzed by using the mixture fraction (conserved scalar) as the independent variable. Results show that for a diffusion flame burning heptane the approximation that the Lewis numbers for all species are approximately equal to unity is valid. When the composition profiles for major chemical species and temperature profiles are plotted with mixture fraction as the independent variable, the maximum value of the concentration of the major stable species and the maximum value of the temperature were found to occur on the rich side of stoichiometry.},
doi = {10.1016/0010-2180(87)90006-X},
url = {https://www.osti.gov/biblio/6436539}, journal = {Combust. Flame; (United States)},
number = ,
volume = 68:3,
place = {United States},
year = {1987},
month = {6}
}