Pyrolysis of the Argonne premium coals under slow heating conditions

Conference · Wed Jun 01 00:00:00 EDT 1988 · Am. Chem. Soc., Div. Gas Fuel Chem., Prepr.; (United States)

OSTI ID:6507086

Serio, M A; Solomon, P R; Carangelo, R M ^[1]

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1. Advanced Fuel Research, Inc., 87 Church St., East Hartford, CT (US)

The establishment of the Argonne Premium Sample Bank will allow more meaningful comparisons to be made between pyrolysis studies from different laboratories. This sample bank also provides a good suite of coals for examining rank dependent phenomena, such as the kinetics of primary gas evolution. A recent ''general'' model of coal pyrolysis proposed by our research group has as one of its assumptions that the kinetics of primary product evolution are rank-insensitive. This assumption was tested by a thorough examination of our data from experiments where only coal type was varied as well as data from similar experiments in the literature. The conclusion was that, with few exceptions, the kinetic rate constants for individual species evolved from coals pyrolyzed under the same conditions show little variation with rank. However, this conclusion remains controversial. The Argonne premium samples provide an opportunity to further test this assumption with a set of coals that was designed to cover a wide range of coal types. A slow, constant heating rate experiment was used, which is the most sensitive to rate variations. The authors' own work has indicated a role for heating rate on tar yields for bituminous coals and on tar molecular weight distributions for lignites. The authors plan to extend this work to the Argonne coals in order to better establish these trends. The current paper is concerned primarily with pyrolysis of the Argonne coals under slow heating conditions in a unique TG-FTIR instrument developed in the authors' laboratory. Results from slow heating rate pyrolysis into a FIMS apparatus are also presented. Experiments have also been done under rapid heating conditions.

• OSTI ID: 6507086
• Report Number(s): CONF-8806136-
• Journal Information: Am. Chem. Soc., Div. Gas Fuel Chem., Prepr.; (United States), Vol. 33:2; Conference: American Chemical Society Division of Fuel Chemistry meeting, Toronto, Canada, 5 Jun 1988
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
BITUMINOUS COAL
THERMODYNAMIC MODEL
COAL
PYROLYSIS
LIGNITE
CHEMICAL REACTION KINETICS
TAR
ANL
CHEMICAL REACTION YIELD
COAL GAS
COAL RANK
COMBUSTION PRODUCTS
EXPERIMENTAL DATA
HEATING RATE
INFRARED SPECTRA
RESEARCH PROGRAMS
THERMAL GRAVIMETRIC ANALYSIS
BLACK COAL
BROWN COAL
CARBONACEOUS MATERIALS
CHEMICAL ANALYSIS
CHEMICAL REACTIONS
DATA
DECOMPOSITION
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUELS
GASES
GRAVIMETRIC ANALYSIS
INFORMATION
KINETICS
MATERIALS
MATHEMATICAL MODELS
NATIONAL ORGANIZATIONS
NUMERICAL DATA
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PARTICLE MODELS
QUANTITATIVE CHEMICAL ANALYSIS
REACTION KINETICS
SPECTRA
STATISTICAL MODELS
THERMAL ANALYSIS
THERMOCHEMICAL PROCESSES
US AEC
US DOE
US ERDA
US ORGANIZATIONS
YIELDS
010409* - Coal
Lignite
& Peat- Pyrolysis & Carbonization- (1987-)
010600 - Coal
Lignite
& Peat- Properties & Composition