Novel liquefaction solvent H/sub 2/O-H/sub 2/S Quarterly report No. 10, 12-15-86 through 3-14-87. [Dihydrophenanthrene; A04-SRCMD low volatile organic oils]

Technical Report · Thu Jan 01 04:00:00 EST 1987

OSTI ID:6676145

Stenberg, V I

The conclusions on the use of H/sub 2/O-H/sub 2/S solvents are: the presence of a small amount of H/sub 2/S enhances the as-defined yields in H/sub 2/O; the distillate, oil, and THF-soluble yields increase with increasing pressures of H/sub 2/S for the water-based liquefaction runs for two coals; H/sub 2/O-H/sub 2/S equals or exceeds the liquefaction performance of A04-SRCMD (low volatile organic oils) for the conversion of two coals into volatile materials at 420 C; dihydrophenthrene gave better conversions than either H/sub 2/O-H/sub 2/S or A04-SRCMD at 420 C, but it decomposes to the extent of 11% at 420 C in 30 minutes; the reactions which had the temperature linearly programmed from 300/sup 0/ to 500 C using H/sub 2/O-H/sub 2/S equaled or exceeded the 420C isothermal yields done in dihydrophenthrene; the products were easier to separate from the solvent in the H/sub 2/O-H/sub 2/S runs, the yields of all products became greater with increasing CO-H/sub 2/ pressures for two coals in the H/sub 2/O-H/sub 2/S solvent; in H/sub 2/O-H/sub 2/S, distillate yields increase with time but the THF-soluble yields level or decrease after ca. 30 minutes; and two temperature regions of evident chemical reactivity, 75 to 118C and 375 to 415 C are evident for 10 different coals of three ranks based upon TGA and DSC data.

• Research Organization: North Dakota Univ., Grand Forks (USA)
• DOE Contract Number: FG22-84PC70787
• OSTI ID: 6676145
• Report Number(s): DOE/PC/70787-T9; ON: DE87008700
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010405* -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
AROMATICS
CHALCOGENIDES
COAL LIQUEFACTION
COMPARATIVE EVALUATIONS
CONDENSED AROMATICS
HIGH TEMPERATURE
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
HYDROGEN TRANSFER
LIQUEFACTION
OILS
ORGANIC COMPOUNDS
ORGANIC SOLVENTS
OTHER ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
RESEARCH PROGRAMS
SOLVENT PROPERTIES
SOLVENTS
SULFIDES
SULFUR COMPOUNDS
THERMOCHEMICAL PROCESSES
WATER
YIELDS