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

Recycle slurry oil characterization. Technical report, October 1983-March 1984

Technical Report ·
OSTI ID:5770315
Run 3LCF10 was the first Lummus Integrated Two-Stage Liquefaction (ITSL) operation with subbituminous coal. It was of interest, therefore, to determine the effect of coal type on process oil characteristics. Previous work with H-Coal recycle oil samples had shown significant differences between Illinois 6 and Wyodak coals. In particular, the subbituminous coal produced recycle oils much richer in paraffinic components than the bituminous coal. These were poorer hydrogen donor media than the bituminous coal derived solvents, and solvents of this quality could have posed serious problems in ITSL in achieving adequate coal conversion in the short contact time (SCT) first-stage reactor. The results of Run 3LCF10 showed much less difference between the Wyodak and Illinois 6 coal-derived process oils. Conoco received and analyzed a total of 162 feed and product samples. These materials were characterized in terms of parameters reflecting their molecular compositions and by standard empirical tests. The results were used to describe the subject ITSL operations in terms of process oil compositions, and to relate those compositions to such measures of process performance as catalyst activity and product yields. Conversions, yields and kinetic parameters were calculated for 3LCF10. Overall 850/sup 0/F/sup +/ conversions and kinetic constants agree well with Lummus' reported results, and show the facile convertability of Wyodak SCT product. Because the Wyodak coal-derived resid is more easily converted, Run 3LCF10 was made at lower temperature than the bituminous coal runs. This could account for the less rapid apparent catalyst deactivation. Appendices 2 and 3 have been entered individually into EDB and ERA. 12 refs., 13 figs., 40 tabs.
Research Organization:
Conoco, Inc., Library, PA (USA). Coal Research Div.
DOE Contract Number:
AC22-80PC30027
OSTI ID:
5770315
Report Number(s):
DOE/PC/30027-60; ON: DE85011960
Country of Publication:
United States
Language:
English