Reactivity of coal in direct hydrogenation process. Technical progress report, March-May 1986

Technical Report · Wed Jan 01 04:00:00 EST 1986

OSTI ID:5672708

Baldwin, R M; Miller, R L

This report summarizes the research carried out during the past three months on DOE grant No. DE-FG22-85PC80907, entitled ''Reactivity of Coal in Direct Hydrogenation Processes.'' The overall objective of the research program is to measure and model the rate and extent of coal liquefaction under some standard set of reaction conditions for a wide suite of coals, and then to correlate the observed liquefaction reactivity with basic coal chemical and geochemical features. Over the last quarter, all experimental work (consisting of 175 experimental runs) on the first coal suite was completed. This suite was comprised of a set of 13 coals from the Exxon sample bank. The rate and extent of conversion of each coal to THF-solubles, asphaltenes, preasphaltenes, oils and gas were measured from microautoclave (tubing-bomb) runs in an inert vehicle (1-methylnaphthalene) at 425/sup 0/C. The data clearly show striking differences in both the rate and extent of reaction, not only for total conversion (to THF-solubles) but in the liquefaction fractions (alphaltenes, preasphaltenes, etc.) as well. The raw data has been reduced via kinetic modeling, and a single unified model capable of adequately describing the rate of conversion to THF-, toluene-, and pentane- solubles has been developed. Statistical testing for all coals in the suite has shown a second-order pseudo-irreversible rate expression to be an adequate descriptive model for the true coals in the data set. Data were corrected prior to kinetic analysis to account for the small non-isothermal period present in the reaction. 5 refs., 17 figs., 6 tabs.

• Research Organization: Colorado School of Mines, Golden (USA). Dept. of Chemical Engineering and Petroleum Refining
• DOE Contract Number: FG22-85PC80907
• OSTI ID: 5672708
• Report Number(s): DOE/PC/80907-T2; ON: DE86012069
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010403 -- Coal & Coal Products-- Hydrogenation-- (-1987)
010405* -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
ACTIVATION ENERGY
ALKANES
ALKYLATED AROMATICS
AROMATICS
ASPHALTENES
ASPHALTS
AUTOCLAVES
BITUMENS
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
COAL
COAL LIQUEFACTION
CONDENSED AROMATICS
DATA
ENERGY
ENERGY SOURCES
EXPERIMENTAL DATA
FOSSIL FUELS
FUELS
FURANS
HETEROCYCLIC COMPOUNDS
HIGH TEMPERATURE
HYDROCARBONS
HYDROGENATION
INFORMATION
KINETICS
LIQUEFACTION
MATERIALS
METHYLNAPHTHALENES
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
OTHER ORGANIC COMPOUNDS
PENTANE
REACTION KINETICS
RESEARCH PROGRAMS
SOLVENT PROPERTIES
TAR
TETRAHYDROFURAN
THERMOCHEMICAL PROCESSES
TIME DEPENDENCE
TOLUENE
YIELDS