Heterogeneous kinetics of coal gasification. Final technical report, 1 August 1981-31 July 1983. [Berty type]
The primary objective of this work was the development and application of an experimental approach to the determination of intrinsic chemical kinetic mechanisms of char-gas reaction systems, and the measurement of the resultant rate parameters in a manner designed to avoid many of the problems, ambiguities, and seeming contradiction that have beset much of the previous work in this area (attributable mostly to the challenging complexities of these heterogeneous reaction systems). The work described herein accomplishes this objective in establishing the advantages of the transient kinetic approach over other techniques used for the study of char-gas reaction systems, and has resulted in a novel prototype apparatus that can be applied to measurements in this area. The efficacy of the transient kinetic approach is clearly demonstrated with CO/sub 2/ gasification studies of various chars. A simple two-step mechanism was found to adequately describe the dynamic behavior of the CO product of this reaction system over the entire range of experimental conditions examined. The degree to which the apparent reaction rate is influenced by transport gradients has been thoroughly analyzed. It was found that an important aspect in determining the parameter values for these heterogeneous kinetic mechanisms involves careful selection and application of multiparameter estimation schemes. The work performed under this project represents a new approach to attacking questions concerning the heterogeneous kinetics of char gasification systems. The potential of this approach for obtaining more complete information on these systems has been fully demonstrated. 103 references, 95 figures, 8 tables.
- Research Organization:
- Brown Univ., Providence, RI (USA). Dept. of Engineering
- DOE Contract Number:
- FG22-81PC40786
- OSTI ID:
- 5988678
- Report Number(s):
- DOE/PC/40786-T1; ON: DE85007002
- Resource Relation:
- Other Information: Portions of this document are illegible in microfiche products. Original copy available until stock is exhausted
- Country of Publication:
- United States
- Language:
- English
Similar Records
Heterogeneous kinetics of coal gasification. Technical progress report, 1 August 1981-31 January 1982
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Related Subjects
CHARS
GASIFICATION
CHEMICAL REACTION KINETICS
MATHEMATICAL MODELS
CHEMICAL REACTORS
COAL GASIFICATION
CARBON DIOXIDE
CARBON MONOXIDE
COCONUTS
DATA ACQUISITION SYSTEMS
DATA ANALYSIS
DIFFUSION
EXPERIMENTAL DATA
HYDROGEN
LIGNITE
MASS SPECTROSCOPY
MIXING
RECOMMENDATIONS
STEAM
TRANSIENTS
BROWN COAL
CARBON COMPOUNDS
CARBON OXIDES
CARBONACEOUS MATERIALS
CHALCOGENIDES
COAL
DATA
ELEMENTS
ENERGY SOURCES
FOOD
FOSSIL FUELS
FRUITS
FUELS
INFORMATION
KINETICS
MATERIALS
NONMETALS
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PYROLYSIS PRODUCTS
REACTION KINETICS
SPECTROSCOPY
THERMOCHEMICAL PROCESSES
010404* - Coal
Lignite
& Peat- Gasification