Effect of solvent characteristics on coal liquefaction. Final technical progress report

Technical Report · Tue Mar 15 00:00:00 EST 1983

OSTI ID:5827111

Silver, H F; Hurtubise, R J

Coal liquefaction solvents were prepared by hydrogenating both distillable and nondistillable coal derived liquids at varying degrees of severity. Both Wyodak and Kentucky 9/14 coals were then liquefied in solvents consisting of blends of distillable and nondistillable coal liquids, each hydrogenated to the same or different levels of severity. Unhydrogenated solvent compounds and severely hydrogenated solvent components were not as effective as mildly hydrogenated components. The most effective solvents contained mildly hydrogenated nondistillable coal liquids. C/sub 4/-800/sup 0/F liquid yields ranging from 50 to 60 wt % of the moisture-free coal were obtained using mildly hydrogenated nondistillable coal liquids as a solvent component. Results of coal liquefaction runs performed under DOE Contract EX-76-S-01-2367 had indicated that Kentucky 9/14 and derived distillate was a more effective solvent than Wyodak coal derived distillate in liquefying either Kentucky 9/14 coal or Wyodak coal. Several analytical methods were developed and used in an attempt to explain not only these earlier results but also to attempt to explain results found in this program indicating a superior effectiveness of mildly hydrotreated, nondistillable components in liquefying Wyodak coal. Emphasis was placed on the use of high performance liquid chromatography to separate coal derived liquid components and spectral techniques to identify these separated components. Field ionization mass spectrometry of samples prepared using high performance liquid chromatography provided the greatest detail about coal derived liquid composition.

• Research Organization: Wyoming Univ., Laramie (USA)
• DOE Contract Number: AC22-79ET14874
• OSTI ID: 5827111
• Report Number(s): DOE/ET/14874-14; ON: DE83012239
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
COAL
COMPARATIVE EVALUATIONS
COAL LIQUEFACTION
CATALYSTS
ORGANIC SOLVENTS
COAL LIQUIDS
BOILING POINTS
HYDROGENATION
LIQUID COLUMN CHROMATOGRAPHY
MASS SPECTROSCOPY
AUTOCLAVES
DISTILLATES
EXPERIMENTAL DATA
FRACTIONATION
INFRARED SPECTRA
RECYCLING
SRC PROCESS
STRUCTURAL MODELS
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
CHROMATOGRAPHY
DATA
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUELS
INFORMATION
LIQUEFACTION
LIQUIDS
MATERIALS
NUMERICAL DATA
PHYSICAL PROPERTIES
SEPARATION PROCESSES
SOLVENTS
SPECTRA
SPECTROSCOPY
THERMOCHEMICAL PROCESSES
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE
010405* - Coal
Lignite
& Peat- Hydrogenation & Liquefaction