Reactivity of coal in direct hydrogenation processes: Technical progress report, March-May 1987
Research during the past quarter centered on continuation of two facets related to the study of coal reactivity in direct hydrogenation liquefaction processes. Five coals from the Argonne Premium coal collection were liquefied at three temperature levels in order to gather data for kinetic analysis purposes. Conversion of these coals to THF-, toluene-, and hexane-solubles was determined at temperatures of 425, 400, and 375 C, and nominal reaction times of 3, 5, 10, 15, and 40 minutes in the microautoclave batch reaction system. Preliminary mathematical modeling of the data using simple irreversible rate expressions and more complex formulations based on a statistical distribution of activation energies was initiated in order to investigate the feasibility of utilizing activation energy as an additional reactivity screening factor. Use of complex models such as the Anthony-Howard formulation for purposes of activation energy determination from liquefaction data at one temperature level was further examined. Five of the 21 coals from the Penn State Premium coal sample bank were liquefied at the standard reactivity screening conditions, and the rate and extent of conversion to THF-, and toluene-, and hexane-solubles quantified. These data were added to the existing data base containing similar information for the prior coal suites from the Exxon and Argonne collections, and preliminary correlational efforts for reactivity vs. coal properties were initiated. Prior conclusions regarding the effect of rank on the rate and extent of conversion were qualitatively verified from the data collected. 1 ref., 13 figs., 2 tabs.
- Research Organization:
- Colorado School of Mines, Golden (USA). Dept. of Chemical Engineering and Petroleum Refining
- DOE Contract Number:
- FG22-85PC80907
- OSTI ID:
- 6448128
- Report Number(s):
- DOE/PC/80907-T6; ON: DE87012377
- Resource Relation:
- Other Information: Portions of this document are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
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Reactivity of coal in direct hydrogenation processes: Technical progress report, June-August 1987
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Related Subjects
COAL
HYDROGENATION
CHEMICAL REACTION KINETICS
TEMPERATURE DEPENDENCE
TIME DEPENDENCE
ACTIVATION ENERGY
EXPERIMENTAL DATA
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
DATA
ENERGY
ENERGY SOURCES
FOSSIL FUELS
FUELS
INFORMATION
KINETICS
MATERIALS
NUMERICAL DATA
REACTION KINETICS
010405* - Coal
Lignite
& Peat- Hydrogenation & Liquefaction