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Comparison of coal tars generated by pyrolysis of Hanna coal and UCG (underground coal gasification) Hanna IVB coal tars

Technical Report ·
OSTI ID:6000086
;
The compositions of coal tars produced by laboratory and pilot scale apparatus have been compared to those produced during underground coal gasification (UCG) experiments at Hanna, Wyoming. Four coal tars were generated by pyrolysis using the block reactor and the laboratory reference retort, and a fifth coal tar was composited from products produced by UCG. Coal tars were separated into chemically defined fractions and were characterized by gas chromatography. Specific compounds were not identified, but rather fingerprinting or compound-type profiling was used for identifying similarities and differences in the product tars. This permitted the evaluation of the different methods of tar production with respect to one another. The UCG coal tars appeared to have undergone more secondary cracking than the pyrolytic products. The coal tar products from the laboratory reference retort appear to be more indicative of the coal's chemical structure. Products from the block reactor contained lesser amounts of the lighter boiling material. In addition there is organic sulfur contamination as indicated by the large amount of sulfur present in the product tar from the block reactor. 11 refs., 16 figs., 11 tabs.
Research Organization:
Western Research Inst., Laramie, WY (USA)
DOE Contract Number:
FC21-83FE60177
OSTI ID:
6000086
Report Number(s):
DOE/FE/60177-2427; ON: DE88000291
Country of Publication:
United States
Language:
English

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Related Subjects

01 COAL, LIGNITE, AND PEAT
010600* -- Coal
Lignite
& Peat-- Properties & Composition
BENCH-SCALE EXPERIMENTS
CARBONACEOUS MATERIALS
CHEMICAL COMPOSITION
CHEMICAL REACTIONS
CHROMATOGRAPHY
COAL
COAL TAR
COMPARATIVE EVALUATIONS
DATA
DECOMPOSITION
ENERGY SOURCES
EXPERIMENTAL DATA
FEDERAL REGION VIII
FOSSIL FUELS
FUELS
GAS CHROMATOGRAPHY
GASIFICATION
HIGH TEMPERATURE
IN-SITU GASIFICATION
IN-SITU PROCESSING
INFORMATION
MATERIALS
NORTH AMERICA
NUMERICAL DATA
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PROCESSING
PYROLYSIS
RETORTING
SEPARATION PROCESSES
TAR
THERMOCHEMICAL PROCESSES
USA
WYOMING