Carbon monoxide and soot emissions from liquid-fueled buoyant turbulent diffusion flames

Journal Article · Tue Oct 01 00:00:00 EDT 1991 · Combustion and Flame; (United States)

DOI:https://doi.org/10.1016/0010-2180(91)90027-9· OSTI ID:5497535

Koeylue, U O; Faeth, G M ^[1]

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1. Dept. of Aerospace Engineering, Univ. of Michigan, Ann Arbor, MI (US)

This paper reports on carbon monoxide concentrations, soot concentrations, and mixture fractions that were measured in the fuel-lean (overfire) region of liquid-fueled buoyant turbulent diffusion flames burning in still air. Pool-fire configurations were studied with the liquids burning from horizontal round wicks, considering both sooting (toluene, benzene, n-heptane, and isopropanol) and nonsooting (methanol and ethanol) fuels. Flame heights and characteristic residence times also were measured, both for the turbulent flames and at the normal smoke point (for the sooting fuels). Carbon monoxide and soot generation factors (mass of CO or soot emitted per unit mass of fuel carbon burned) were uniform through out the overfire region and were relatively independent of flame residence times (which were generally an order of magnitude longer than the normal smoke point residence times of the sooting fuels). Processes of carbon monoxide and soot emission for the nonalcohols are closely related, based on the good correlation between their emission factors: 0.37 kg Co/per kg soot with a standard deviation of 0.09. However, nonsooting methanol and ethanol/air flames still emitted low levels of CO so that there is a component of Co emissions that is not associated with soot.

• OSTI ID: 5497535
• Journal Information: Combustion and Flame; (United States), Journal Name: Combustion and Flame; (United States) Vol. 87:1; ISSN CBFMA; ISSN 0010-2180
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400800* -- Combustion
Pyrolysis
& High-Temperature Chemistry
54 ENVIRONMENTAL SCIENCES
540120 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (1990-)
ALCOHOL FUELS
ALKYLATED AROMATICS
AROMATICS
BENZENE
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
CHEMICAL EFFLUENTS
CHEMICAL REACTIONS
CHEMICAL WASTES
COMBUSTION
EMISSION
ETHANOL FUELS
FLAMES
FUELS
HYDROCARBONS
METHANOL FUELS
NONRADIOACTIVE WASTES
ORGANIC COMPOUNDS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
SOOT
SYNTHETIC FUELS
THERMOCHEMICAL PROCESSES
TOLUENE
TURBULENCE
WASTES