Stability of short-contact-time liquefaction products

Conference · Fri Jan 01 04:00:00 EST 1982

OSTI ID:5973009

Wham, R M; Wortman, J E; Dinsmore, T V; Rodgers, B R

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
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010405* -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
013000 -- Coal
Lignite
& Peat-- Transport
Handling
& Storage
AZINES
CHEMICAL PROPERTIES
COAL LIQUEFACTION
COAL LIQUIDS
COAL PREPARATION
COMMINUTION
CONCENTRATORS
DENSITY
EXTRACTION
FLUIDS
FRACTIONATION
HETEROCYCLIC COMPOUNDS
LIQUEFACTION
LIQUIDS
MAGNETIC SEPARATORS
MOLECULAR WEIGHT
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PHYSICAL PROPERTIES
PYRIDINE
PYRIDINES
SEPARATION PROCESSES
SOLVENT EXTRACTION
STABILITY
THERMOCHEMICAL PROCESSES
TIME DEPENDENCE
VISCOSITY