Accession Number : ADA186403

Title :   Investigation of Fuel Additive Effects on Sooting Flames.

Descriptive Note : Annual rept.,

Corporate Author : UNITED TECHNOLOGIES RESEARCH CENTER EAST HARTFORD CT

Personal Author(s) : Bonczyk, Paul A

PDF Url : ADA186403

Report Date : 30 Jun 1987

Pagination or Media Count : 14

Abstract : The objective of this research is to clarify the mechanisms responsible for the suppression of soot in flames by fuel additives. Measurements are limited to well-defined hydrocarbon/air prevaporized liquid- and gaseous-fueled flames. Emphasis is given to ferrocene in a diffusion flame fueled by prevaporized iso-octane. Nonperturbing laser/optical diagnostic techniques are used to relate changes in soot particulate size, number density, and volume fraction to additive concentration. Ferrocene is observed to suppress a visible soot plume completely and, in general, to intervene at a late combustion stage. Suppression is due to both size and number density reduction, which suggests that ferrocene enhances the oxidative burn-out of soot. In contrast, at an early combustion stage nearer the burner lip, a slight enhancement of soot observed with ferrocene seeding. Keywords: Additive, Ferrocene, Flame, Soot.

Descriptors :   *ADDITIVES, *FLAMES, *FUEL ADDITIVES, *SOOT, AIR, BURNOUT, COMBUSTION, CONCENTRATION(CHEMISTRY), DENSITY, DIAGNOSIS(GENERAL), FERROCENES, HYDROCARBONS, LASERS, METHODOLOGY, OPTICS, OPTIMIZATION, OXIDATION, PARTICLE SIZE, PARTICULATES, PLUMES, REDUCTION, SEEDING, SUPPRESSION, VISIBLE SPECTRA

Subject Categories : Combustion and Ignition
      Fuels

Distribution Statement : APPROVED FOR PUBLIC RELEASE