Thermal reactivity studies of coal-derived residuum. Final report

Technical Report · Tue Apr 01 04:00:00 EST 1986

OSTI ID:5931523

Miller, R L

Results from an experimental study of coal-derived residuum reactivity are reported. Thermal conversion experiments were completed at two sets of reaction conditions using residuum samples derived from Kentucky 9/14 and Illinois 6 bituminous coals. The effects of reaction temperature, reaction pressure, reaction time, hydrogen gas-liquid mass transfer rate, and residuum catalytic prehydrotreatment severity on C/sub 4/-800/sup 0/F distillate yield and hydrogen utilization efficiency were monitored. Results indicated that residuum reactivity towards distillate production decreased with increased severity of catalytic prehydrotreatment. Thermal hydrotreatment of the residuum during conversion also resulted in decreased reactivity. Asphaltene disproportionation and retrogressive reactions to form IOM were suppressed when the feed residuum was hydrotreated prior to thermal conversion. Results from elemental analysis and Fourier Transform Infrared spectroscopy of selected asphaltene samples suggested that disproportionation occurred via a mechanism of phenolic condensation. 63 refs., 33 figs., 21 tabs.

• Research Organization: Wyoming Univ., Laramie (USA). Dept. of Chemical Engineering
• OSTI ID: 5931523
• Report Number(s): EPRI-AP-4513; ON: TI86920251
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010405* -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
AUTOCLAVES
BENCH-SCALE EXPERIMENTS
BITUMINOUS COAL
BLACK COAL
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
COAL
COAL LIQUEFACTION
COAL LIQUIDS
DATA
DISTILLATES
ENERGY SOURCES
EXPERIMENTAL DATA
FLUIDS
FOSSIL FUELS
FUELS
HIGH TEMPERATURE
HYDROGENATION
INFORMATION
LIQUEFACTION
LIQUIDS
MATERIALS
MEDIUM PRESSURE
NUMERICAL DATA
ORGANIC SOLVENTS
PROCESSING
RECYCLING
REFINING
SOLVENTS
THERMOCHEMICAL PROCESSES
TIME DEPENDENCE
TSL PROCESS
YIELDS