Combustion research on characterization of particulate organic matter from flames. Final task report August 1974-August 1977
The report gives results of a study of the formation and emission of soot and polycyclic aromatic hydrocarbons (PAH) from both laminar flames and a turbulent continuous-flow combustor. Decreasing the atomizing pressure decreased the amount of soot and PAH produced in the latter system. Benzene fuel gave more soot and PAH than did kerosene, and the PAH from benzene were more substituted. Nitrogen- and sulfur-doped fuels did not affect total soot production. The distribution of soot and PAH within the flame was consistent with the concept that certain PAH may serve as intermediates in soot formation. The PAH formed during combustion of coal, wood, and kerosene were separated and identified by capillary column gas chromatography and mass spectrometry. The PAH from coal combustion were found to be similar to airborne PAH from Indianapolis, a high coal consumption area; those from kerosene combustion were similar to airborne PAH from Boston, an area of low coal consumption and high consumption of petroleum derived fuels. Nitrogen containing fuels primarily produce polycyclic aromatic compounds in which the nitrogen is in a cyano substituent (approximately 70%). This contrasts with the observation that nitrogen heterocyclic compounds are the major nitrogen containing compounds in airborne particulate matter.
- Research Organization:
- Massachusetts Inst. of Tech., Cambridge (USA). Dept. of Chemical Engineering
- OSTI ID:
- 5776778
- Report Number(s):
- PB-291314
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
400800* -- Combustion
Pyrolysis
& High-Temperature Chemistry
AIR POLLUTION
AROMATICS
BENZENE
CARBONACEOUS MATERIALS
CHEMICAL ANALYSIS
CHEMICAL REACTION YIELD
CHROMATOGRAPHY
COAL
COMBUSTION PRODUCTS
DIFFUSION
ENERGY SOURCES
FLAMES
FOSSIL FUELS
FUELS
GAS ANALYSIS
GAS CHROMATOGRAPHY
HYDROCARBONS
INDUSTRIAL WASTES
KEROSENE
MASS SPECTROSCOPY
ORGANIC COMPOUNDS
PARTICLES
PETROLEUM PRODUCTS
POLLUTION
POLYCYCLIC AROMATIC HYDROCARBONS
SEPARATION PROCESSES
SOOT
SPECTROSCOPY
WASTES
WOOD
YIELDS