Homogeneous catalysis of lignite liquefaction with hydrogen sulfide

Conference · Sat Jan 01 04:00:00 EST 1983

OSTI ID:6504605

Baker, G G; Willson, W G; Farnum, B W; Stenberg, V I

Based on our tests to date we can summarize our thoughts on H/sub 2/S addition as follows: the incorporation of sulfur into distillable products is minimal and occurs as elemental sulfur and light organics. There are no apparent additional health hazards associated with hydrocarbon distillates produced with H/sub 2/S addition. Methylene bond cleavages of the type represented by diphenylmethane are initiated by elemental S with H/sub 2/S serving as an H-donor. Based on tubing bomb tests, H/sub 2/S does not catalyze liquefaction of lignite by H/sub 2/. As demonstrated in tubing bomb, autoclave and CPU experiments, H/sub 2/S catalyzes the reaction of lignite with CO and water, probably by promoting the water gas shift reaction. In bottoms recycle, added H/sub 2/S significantly lowers recycle slurry viscosity. Recycle product produced with added H/sub 2/S contains lower boiling distillates and enhanced levels of hydroaromatics. H/sub 2/S addition enables lignite liquefaction to be accomplished at temperatures significantly below those necessary for non-catalyzed reaction and thus has the potential to reduce H/sub 2/ consumption through decreased hydrocarbon gas production. 9 figures, 5 tables.

• Research Organization: Department of Energy, Grand Forks, ND (USA). Grand Forks Energy Technology Center; North Dakota Univ., Grand Forks (USA). Dept. of Chemistry
• OSTI ID: 6504605
• Report Number(s): DOE/FC-1011; CONF-830308-5; ON: DE83006946
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010405* -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
010600 -- Coal
Lignite
& Peat-- Properties & Composition
BROWN COAL
CARBONACEOUS MATERIALS
CATALYSTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL COMPOSITION
CHEMICAL REACTION KINETICS
COAL
COAL LIQUEFACTION
DATA
DIAGRAMS
ENERGY SOURCES
EXPERIMENTAL DATA
FLOWSHEETS
FOSSIL FUELS
FUELS
HIGH TEMPERATURE
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
INFORMATION
KINETICS
LIGNITE
LIQUEFACTION
MATERIALS
MEDIUM PRESSURE
NUMERICAL DATA
OIL YIELDS
REACTION KINETICS
SULFIDES
SULFUR COMPOUNDS
THERMOCHEMICAL PROCESSES
YIELDS