Analysis of pyrolysis kinetics of eastern oil shales

Conference · Sun Jan 01 04:00:00 EST 1984 · Am. Chem. J.; (United States)

OSTI ID:6703282

Shen, M S; Fan, L S; Casleton, K H

The authors measure the rate of organic matter decomposition during pyrolysis of Kentucky Sunbury oil shale. Thermoanalytical methods are used to obtain the kinetics data. It should be noted, however, that the thermogravimetric analyzer (TGA) utilized in the present experiment is not equipped with G.C. or I.R. for gas composition measurement. Only the weight variation can be obtained from the TGA. Thus, the model developed here is only for the weight variation of solid reactants in the course of pyrolysis. Furthermore, the proposed model does not require consideration of the activation energy distribution function for the reactions. By heating the oil shale, gaseous and liquid products are formed which result from the many different reactions involving these components. The reported pyrolysis kinetics are, thus, an average for these many different reactions that take place. The representation of the decomposition rate would become very complex if all the mechanistic reactions were to be identified and accounted for. Thus, a global first order rate expression is assumed for simplicity's sake. For this reason, the activation energy and the frequency factor are the only representative kinetic values for a complicated reaction system. These values are, however, useful from the engineering standpoint of oil shale retorting and can be used in a mathematical model to represent the process.

• Research Organization: Morgantown Energy Tech. Center, WV
• OSTI ID: 6703282
• Report Number(s): CONF-840415-
• Conference Information: Journal Name: Am. Chem. J.; (United States) Journal Volume: 29:3
• Country of Publication: United States
• Language: English

Related Subjects

04 OIL SHALES AND TAR SANDS
040500* -- Oil Shales & Tar Sands-- Properties & Composition
BITUMINOUS MATERIALS
BLACK SHALES
CALORIMETRY
CARBONACEOUS MATERIALS
CHATTANOOGA FORMATION
CHEMICAL ANALYSIS
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
DATA
DECOMPOSITION
ENERGY SOURCES
EXPERIMENTAL DATA
FEDERAL REGION IV
FOSSIL FUELS
FUELS
GEOLOGIC DEPOSITS
GEOLOGIC FORMATIONS
GRAVIMETRIC ANALYSIS
INFORMATION
KENTUCKY
KEROGEN
KINETICS
MATERIALS
MATHEMATICAL MODELS
MINERAL RESOURCES
NORTH AMERICA
NUMERICAL DATA
OIL SHALE DEPOSITS
OIL SHALES
ORGANIC MATTER
PYROLYSIS
QUANTITATIVE CHEMICAL ANALYSIS
REACTION KINETICS
RESOURCES
THERMAL ANALYSIS
THERMAL GRAVIMETRIC ANALYSIS
THERMOCHEMICAL PROCESSES
USA