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U.S. Department of Energy
Office of Scientific and Technical Information

Recycle-slurry-oil characterization. Second annual report, October 1, 1981-September 30, 1982

Technical Report ·
OSTI ID:5767857
This report includes the results of our analysis of the ITSL PDU runs using Illinois 6, Burning Star coal. One hundred-six samples were analyzed. Additionally, four coals were tested and a small set of samples from the Wilsonville pilot plant were analyzed. Our principal conclusions follow: At a short contact time (SCT) reaction temperature of 860/sup 0/F, Illinois 6 coal converted to tetrahydrofuran (THF) solubles to about the same extent as Indiana 5 coal, but yielded somewhat more 850/sup 0/F/sup -/ product from the first stage; the distillate portion of the pasting solvent during the Illinois 6 coal runs described was an excellent donor solvent similar to that produced during Indiana 5 coal operations; decreasing the SCT reaction temperature from 860/sup 0/F to 830/sup 0/F caused the distillate solvent to donate less hydrogen, thereby improving the solvent quality of the product distillate, caused coal conversion to THF solubles in the SCT unit to decrease significantly, and caused net 850/sup 0/F/sup -/ yield in the SCT unit to decrease significantly. SCT product quality, as measured by resid preasphaltenes concentration, correlates with pasting solvent composition to a high degree (r/sup 2/ = 0.96). We believe this correlation has value as a predictive tool and as a means of discerning the effects of the three sub-units (SCT, ASDA and LC-Finer) on each other.
Research Organization:
Conoco Coal Development Co., Library, PA (USA). Research Div.
DOE Contract Number:
AC22-80PC30027
OSTI ID:
5767857
Report Number(s):
DOE/PC/30027-39; ON: DE83017114
Country of Publication:
United States
Language:
English