Separation of macerals from subbituminous coals and their response to liquefaction
Separation of macerals from three Alberta subbituminous coals was investigated using float-and-sink method with dense liquids followed by the density gradient technique proposed by Dyrkacz and co-workers at Argonne National Laboratory, USA Resolutions of 90 percent or greater purity were obtained in some fractions in quantities sufficient to study their response to liquefaction. The ease of liquefaction of macerals isolated from subbituminous coals was, in descending order, liptinite, vitrinite, inertinite. Liquefaction of inertinite occurred at somewhat higher temperatures compared to that of vitrinite macerals which initiated between 350/sup 0/ and 400/sup 0/C. Analysis of the chemical makeup of macerals from a subbituminous coal indicated that liptinite was relatively rich in hydrogen, whereas vitrinite and inertinite were relatively rich in oxygen and carbon respectively. The average densities were 1.285, 1.345 and 1.458 g/cc for liptinite, vitrinite and inertinite respectively. X-ray diffraction and NMR spectra of the three macerals were also investigated which will be the subject of a future detailed report.
- Research Organization:
- Coal Research Department, Alberta Research Council, Devon, Alberta
- OSTI ID:
- 5082396
- Journal Information:
- Liq. Fuels Technol.; (United States), Journal Name: Liq. Fuels Technol.; (United States) Vol. 3:3; ISSN LFTED
- Country of Publication:
- United States
- Language:
- English
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ALBERTA
CANADA
CARBONACEOUS MATERIALS
CHEMICAL ANALYSIS
COAL
COAL LIQUEFACTION
COAL LIQUIDS
COAL PREPARATION
COHERENT SCATTERING
DENSITY
DIFFRACTION
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUELS
HEAVY MEDIA SEPARATION
LIQUEFACTION
LIQUIDS
MACERALS
MATERIALS
NMR SPECTRA
NORTH AMERICA
PHYSICAL PROPERTIES
PURIFICATION
SCATTERING
SEPARATION PROCESSES
SPECTRA
SUBBITUMINOUS COAL
THERMOCHEMICAL PROCESSES
X-RAY DIFFRACTION