Advanced research for the characterization of hydrogen donor solvents in two-stage liquefaction. Quarterly report, July 1-September 30, 1984

Technical Report · Sat Dec 01 04:00:00 EST 1984

OSTI ID:5982812

Chillingworth, R S; Hamshar, J A; Potts, J D

Ten fresh presulfided catalysts, representing a variety of candidates, were tested in the microautoclave. A relatively wide range of operating conditions was employed in order to permit evaluation of both hydrotreating and hydrocracking activities. Solvent B, a hydrotreated solvent, was the primary feedstock, reflecting an emphasis on selecting catalysts especially well suited to a second-stage of LC-Fining for the ITSL process. No striking differences in hydrotreating activity were observed between the catalysts tested. Reporting of analytical data and yields was concluded for SCT experiments on Illinois No. 6 coal including runs using solvents A and B in a nitrogen atmosphere. Coal conversions to THF solubles attain a maximum at approximately 850/sup 0/F, declining at higher temperatures due to apparent coking. Conversions with solvent A (non-prehydrogenated) are lower than those with solvent B (prehydrogenated) and decline more at higher temperatures, apparently due to hydrogen deficiency of the solvent. Generally, for all solvents, higher coal conversions were observed in hydrogen than in nitrogen. Solvent B produces the least amount of preasphaltenes and the highest coal conversion and oil yield of the four solvents. For all solvents, oil yields were greater and preasphaltenes lower at the longer residence time of 10 minutes, compared to 2 minutes. 18 figures, 12 tables.

• Research Organization: Cities Service Research and Development Co., Tulsa, OK (USA)
• DOE Contract Number: AC22-83PC60047
• OSTI ID: 5982812
• Report Number(s): DOE/PC/60047-T5; ON: DE85003751
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010405* -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
AUTOCLAVES
CATALYSTS
CHEMICAL REACTIONS
COAL LIQUEFACTION
COAL LIQUIDS
COMPARATIVE EVALUATIONS
CRACKING
DECOMPOSITION
ELEMENTS
FLUIDS
HYDROCRACKING
HYDROGENATION
LIQUEFACTION
LIQUIDS
NITROGEN
NONMETALS
OPTIMIZATION
ORGANIC SOLVENTS
PYROLYSIS
REMOVAL
SOLVENTS
SULFUR
THERMOCHEMICAL PROCESSES
TIME DEPENDENCE
TSL PROCESS