Flash pyrolysis of Chattanooga oil shale

Conference · Fri Feb 01 04:00:00 EST 1985 · Proceeding, Eastern Oil Shale Symposium; (United States)

OSTI ID:6264418

Feng, R J; McKinley, M D; Rampacek, C

Flash pyrolysis of Chattanooga oil shale was conducted in an entrained-solids reactor using N/sub 2/ as the entrainer at atmospheric pressure and temperatures from 485 to 685/sup 0/C. The residence time in the reactor was 8 sec. The particle sizes of the shale used were -40 +50 and -50 +70 mesh. The raw oil shale assayed 10.8 gal/ton and the maximum oil yield from the flash pyrolysis experiments was 70% of the modified Fischer assay yield at a temperature of 485/sup 0/C. The maximum oil yield was at the lowest temperature run, which gave a carbon conversion of 40%. At the optimum conditions, 14% of the carbon in the raw shale was converted to gaseous products, while at the highest temperatures 55% was converted to gas. Higher retorting temperatures favor gas production rather than oil production. Hydrogen constituted over 90 mole% of the gas produced (on a nitrogen-free basis) at the condition of maximum oil yield, while carbon oxides were less than 2%. The oil produced contained approximately 4% sulfur, which was less than 3% of the sulfur in the raw oil shale. Further processing of the shale is required to recover the energy contained in the carbon residue on the spent shale.

• Research Organization: Univ. of Alabama, University
• OSTI ID: 6264418
• Report Number(s): CONF-8411130-
• Conference Information: Journal Name: Proceeding, Eastern Oil Shale Symposium; (United States) Journal Volume: IMMR84/124
• Country of Publication: United States
• Language: English

Related Subjects

04 OIL SHALES AND TAR SANDS
040402* -- Oil Shales & Tar Sands-- Surface Methods
BITUMINOUS MATERIALS
CARBONACEOUS MATERIALS
CHATTANOOGA FORMATION
CHEMICAL COMPOSITION
CHEMICAL REACTIONS
CHEMICAL REACTORS
COAL GASIFICATION
COAL LIQUEFACTION
DECOMPOSITION
DISTILLATION EQUIPMENT
ENERGY SOURCES
EQUIPMENT
FLASH HYDROPYROLYSIS PROCESS
FOSSIL FUELS
FUELS
GASIFICATION
GEOLOGIC FORMATIONS
LIQUEFACTION
MATERIALS
MINERAL OILS
OIL SHALES
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PRODUCTION
PYROLYSIS
RETORTS
SHALE OIL
THERMOCHEMICAL PROCESSES