Coal pretreatment for two stage liquefaction. Quarterly report, January 1-March 31, 1986

Technical Report · Wed Jan 01 04:00:00 EST 1986

OSTI ID:5785549

Derbyshire, F J; Luckie, P T

Work has continued on the characterization of size-density fractions from Wyodak coal. A sample of 1.4 f material has been selected as a liquefaction feedstock. A second sample has been used as a feed for liquid-liquid separation using heptane-water. Preliminary results from these experiments show some enrichment of vitrinite and rejection of ash and semifusinite. In the liquefaction research, the autoclave system is now fully operational and experiments are being conducted to investigate temperature-staged catalytic liquefaction using this reactor. Further tubing bomb experiments have been performed to investigate the influence of reaction variables on temperature staged liquefaction. It has been found that, when naphthalene is used as the solvent, there is negligible conversion to tetralin, either in the low-temperature stage or in the combined two-stage reaction. The result suggests that the catalytic mechanism may involve some direct interaction with the coal. A series of experiments has now been completed to examine the influence of process solvents on temperature-staged liquefaction. These solvents were recycle solvent fractions from the Lummus ITSL process when Wyodak coal; 650-850/sup 0/F, 850+/sup 0/F fractions and a l:l blend of these materials. In terms of performance, the distillate fraction was poor, the bend better and the 850+/sup 0/F fraction most effective in promoting high oil yields and coal conversions. 6 refs., 4 tabs.

• Research Organization: Pennsylvania State Univ., University Park (USA). Coll. of Earth and Mineral Sciences
• DOE Contract Number: FG22-84PC70003
• OSTI ID: 5785549
• Report Number(s): DOE/PC/70003-T9; ON: DE86010322
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010405 -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
010600 -- Coal
Lignite
& Peat-- Properties & Composition
013000* -- Coal
Lignite
& Peat-- Transport
Handling
& Storage
ALKANES
AROMATICS
ASH CONTENT
AUTOCLAVES
CARBONACEOUS MATERIALS
COAL
COAL FINES
COAL LIQUEFACTION
COMMINUTION
COMPARATIVE EVALUATIONS
CONDENSED AROMATICS
DATA
DEASHING
DENSITY
ENERGY SOURCES
EXPERIMENTAL DATA
FOSSIL FUELS
FUELS
GRINDING
HEPTANE
HIGH TEMPERATURE
HYDROCARBONS
HYDROGEN COMPOUNDS
INFORMATION
LIQUEFACTION
MACERALS
MACHINING
MATERIALS
MEDIUM PRESSURE
NAPHTHALENE
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC SOLVENTS
OXYGEN COMPOUNDS
PETROGRAPHY
PHYSICAL PROPERTIES
RECYCLING
RESEARCH PROGRAMS
SEPARATION PROCESSES
SOLVENTS
SUBBITUMINOUS COAL
TEMPERATURE EFFECTS
THERMOCHEMICAL PROCESSES
TSL PROCESS
WATER
YIELDS