Stability of short-contact-time liquefaction products
Short-contact-time coal-liquefaction material produced in 19-cc tubing bomb reactors from Kentucky No. 9 coal and Wilsonville recycle solvent has been analyzed for total conversion to pyridine solubles and preasphaltenes, asphaltenes, oils, and residue composition. Pyridine solubility correlated well with a reaction-severity parameter that accounts for residence time and the total thermal history of the product. However, preliminary fractionation data do not show clear monotonic trends when examined in terms of this parameter. Magnetically beneficiated samples of Kentucky No. 9 coal are being evaluated for conversion under short-contact-time liquefaction conditions. Preliminary results show the conversion of the parent coal to be 79% on a MAF basis. The fraction produced at the low end of the magnetic susceptibility spectrum exhibits an 89% MAF conversion. Additional runs will further examine liquefaction behavior in other portions of the spectrum. The standard-run conditions are 5 minutes at 425/sup 0/C for 3 minutes allowed for heat-up.
- Research Organization:
- Oak Ridge National Lab., TN (USA)
- DOE Contract Number:
- W-7405-ENG-26
- OSTI ID:
- 5973009
- Report Number(s):
- CONF-820202-19; ON: DE83015737
- Resource Relation:
- Conference: AICHE 1982 national winter meeting, Orlando, FL, USA, 28 Feb 1982
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
COAL LIQUEFACTION
TIME DEPENDENCE
COAL LIQUIDS
CHEMICAL PROPERTIES
FRACTIONATION
PHYSICAL PROPERTIES
SOLVENT EXTRACTION
STABILITY
COAL PREPARATION
MAGNETIC SEPARATORS
DENSITY
MOLECULAR WEIGHT
PYRIDINE
VISCOSITY
AZINES
COMMINUTION
CONCENTRATORS
EXTRACTION
FLUIDS
HETEROCYCLIC COMPOUNDS
LIQUEFACTION
LIQUIDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PYRIDINES
SEPARATION PROCESSES
THERMOCHEMICAL PROCESSES
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