Low severity coal liquefaction to determine reactivity of coals: Technical progress report No. 4 for period March 1, 1987 through May 31, 1987

Technical Report · Sat Aug 01 04:00:00 EDT 1987

OSTI ID:6005817

Chung, K E

The objectives of this investigation are (1) to determine the reactivity of bituminous coals for liquefaction using moderate temperature hydrogenation, and (2) to examine the reaction chemistry involved in the moderate temperature liquefaction as a function of reaction time, temperature and catalyst application. The experimental work involves hydrogenation of a bituminous coal at 325/sup 0/C in the absence of a donor solvent and catalyst. Then, the effect of reaction temperature and catalysts will be studied at temperatures between 300 and 350/sup 0/C using two catalysts, FeS/sub 2/ and ammonium molybdate. The effects of reaction time and temperature on the hydrogenation of an Illinois bituminous coal have been reported. Major observations include (1) the high reactivity of the coal with H/sub 2/ in the absence of a H-donor solvent at 325/sup 0/C, conversion being 90% with 14 h reaction time and 69% with 3 h, (2) parallel formation of Oil, Alphaltene and Preasphaltene, (3) separation and identification of aryl-alkyl ethers in product fractions, and the reactivity of the ether groups. In this report, the effects of a hydrogen-donor solvent, 9,10-dihydrophenanthrene (DHP), and pyrite on the hydrogen reaction are presented. An Ohio bituminous coal reacted with H/sub 2/ at 325/sup 0/C similarly to the Illinois bituminous coal. Oil yield was similar to that from the Illinois coal, but the yields of other fractions were significantly different. 2 refs., 1 fig., 3 tabs.

• Research Organization: Rockwell International Corp., Thousand Oaks, CA (USA). Science Center
• DOE Contract Number: FG22-86PC90912
• OSTI ID: 6005817
• Report Number(s): DOE/PC/90912-T4; ON: DE87013630
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010405* -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
AMMONIUM COMPOUNDS
BITUMINOUS COAL
BLACK COAL
CARBONACEOUS MATERIALS
CATALYSTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
COAL
ENERGY SOURCES
FOSSIL FUELS
FUELS
HYDROGENATION
IRON COMPOUNDS
IRON SULFIDES
KINETICS
MATERIALS
MINERALS
MOLYBDATES
MOLYBDENUM COMPOUNDS
OXYGEN COMPOUNDS
PYRITE
REACTION KINETICS
REFRACTORY METAL COMPOUNDS
SULFIDE MINERALS
SULFIDES
SULFUR COMPOUNDS
TEMPERATURE DEPENDENCE
TRANSITION ELEMENT COMPOUNDS
YIELDS