Recycle-slurry-oil characterization. Quarterly report, January 1, 1982-March 31, 1982

Technical Report · Wed Dec 01 04:00:00 EST 1982

OSTI ID:6931568

Burke, F P; Winschel, R A

Based on our work, we conclude the following: (1) Preliminary analyses of the samples from the initial Illinois 6 coal ITSL runs show that they have compositions similar to the samples from the Indiana 5 coal runs. (2) The 375/sup 0/C/sup -/ (707/sup 0/F/sup -/) fraction of the pasting solvent is a poorer donor solvent than the heavier fractions. The quantity of donatable hydrogen in the pasting solvent distillate fractions boiling above 425/sup 0/C (797/sup 0/F) is somewhat less than that in the 375 to 425/sup 0/C fraction, but the donor activity remains high. It is clear that the heavier distillable fractions of the ITSL recycle oil are superior as donor solvents to the light ends boiling below 375/sup 0/C (707/sup 0/F). (3) In the current ITSL concept, heavy distillate (650/sup 0/F/sup +/) and resid (excluding that rejected by the ASDA) are recycled to extinction. This mode of recycle makes maximum use of the high donor solvent quality present in the heavy distillate. (4) With increasing boiling point, ITSL pasting solvent decreases in total hydrogen and paraffinic content and increases in aromatic hydrogen content. The concentration of cyclic aliphatic hydrogen (a measure of donor concentration) increases with boiling point to about 350/sup 0/C, then decreases. (5) Hexane soluble residual oils are concentrated in the light resid (850 to 970/sup 0/F). Preasphaltenes are concentrated in the heavy (970/sup 0/F/sup +/) resid. (6) A short study was made on the LC-Finer product of a paraffinic Utah coal extract as a model for the LC-Finer product of Wyodak coal. The Utah coal LC-Finer product was shown to be a very poor quality donor and hydroliquefaction solvent largely as a result of its high paraffinicity and low concentration of donors and condensed ring systems. This is particularly true of the lower boiling fractions. An appendix has been entered separately.

• Research Organization: Conoco, Inc., Library, PA (USA). Coal Research Div.
• DOE Contract Number: AC22-80PC30027
• OSTI ID: 6931568
• Report Number(s): DOE/PC/30027-31; ON: DE83004350
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010405* -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
BOILING POINTS
CARBONACEOUS MATERIALS
CHEMICAL COMPOSITION
COAL
COAL LIQUEFACTION
COMPARATIVE EVALUATIONS
DATA
DIAGRAMS
ENERGY SOURCES
EXPERIMENTAL DATA
EXTRACTION
FLOWSHEETS
FOSSIL FUELS
FRACTIONATION
FUELS
HYDROGEN TRANSFER
INFORMATION
LC-FINING
LIQUEFACTION
MATERIALS
NUMERICAL DATA
ORGANIC SOLVENTS
PHYSICAL PROPERTIES
RECYCLING
SEPARATION PROCESSES
SOLVENTS
THERMOCHEMICAL PROCESSES
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE
TSL PROCESS