Changes in hydrogen utilization with temperature during direct coal liquefaction

Conference · Sat Jan 01 00:00:00 EST 1983 · Prepr. Pap., Am. Chem. Soc., Div. Fuel Chem.; (United States)

OSTI ID:6655562

Finseth, D H; Bockrath, B C; Illig, E G; Lett, R G; Oillo, D L; Retcofsky, H L; Sprecher, R F

The approach outlined yields a rather detailed description of the net utilization of hydrogen during direct liquefaction, partitioning it into contributions from gas generation, heteroatom removal, hydrogenation, and matrix breakdown. Preliminary results indicate that internal hydrogen reorganization, with little consumption, predominates at low temperatures, with hydrogenation being compensated for by the hydrogen liberated in condensations. As the temperature is increased, bond cleavage reactions and aromatization reactions appear to become more important, and the net hydrogen consumption increases. Additional studies of the assumptions in the model and of uncertainties in the analytical data are needed to critically evaluate the utility of this approach.

• Research Organization: Pittsburgh Energy Technology Center, Pittsburgh, PA
• OSTI ID: 6655562
• Report Number(s): CONF-830814-
• Journal Information: Prepr. Pap., Am. Chem. Soc., Div. Fuel Chem.; (United States), Vol. 28:5; Conference: 186. national meeting of the American Chemical Society, Washington, DC, USA, 28 Aug 1983
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
CHEMICAL REACTIONS
TEMPERATURE DEPENDENCE
TEMPERATURE EFFECTS
COAL LIQUEFACTION
MATHEMATICAL MODELS
AROMATIZATION
CHEMICAL BONDS
CHEMICAL REACTION KINETICS
CLEAVAGE
CONSUMPTION RATES
HETEROCYCLIC COMPOUNDS
HYDROGEN
HYDROGEN TRANSFER
HYDROGENATION
CRYSTAL STRUCTURE
ELEMENTS
KINETICS
LIQUEFACTION
MICROSTRUCTURE
NONMETALS
ORGANIC COMPOUNDS
REACTION KINETICS
THERMOCHEMICAL PROCESSES
010405* - Coal
Lignite
& Peat- Hydrogenation & Liquefaction