Kinetics of short contact time coal liquefaction Part 1: Effect of operating variables

Journal Article · Thu Mar 01 04:00:00 EST 1984 · AIChE J.; (United States)

DOI:https://doi.org/10.1002/aic.690300219· OSTI ID:6754305

Abichandani, J S; Cronauer, D C; Shah, Y T; Wieland, J H

The liquefaction kinetics of Powhatan No. 5 mine coal (Pittsburgh Seam) in the presence of SRC-II recycle solvent at short contact times (<10 min) and temperature and pressure ranges of 573-723 K and 10.3-13.8 MPa is examined in a well-mixed reactor. In the initial stages of liquefaction, while overall coal conversion (tetrahydrofuran solubles) increases with temperature, oil (pentane solubles) is lost with an increase in temperature. An increase in solvent-to-coal ratio results in an increase of conversion. The initial coal particle size distribution, total pressure, and nature of gas phase (nitrogen or hydrogen) have no significant effect on the production of any of the product of liquefaction for contact times up to 10 min. A lumped kinetic model is presented to describe the product distribution.

• Research Organization: Dept. of Chemical and Petroleum Eng., Univ. of Pittsburgh, Pittsburgh, PA 15261
• OSTI ID: 6754305
• Journal Information: AIChE J.; (United States), Journal Name: AIChE J.; (United States) Vol. 30:2; ISSN AICEA
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010405* -- Coal
Lignite
&amp; Peat-- Hydrogenation &amp; Liquefaction
ALKANES
BITUMINOUS COAL
BLACK COAL
CARBONACEOUS MATERIALS
CHEMICAL REACTION YIELD
CHEMICAL REACTORS
COAL
COAL LIQUEFACTION
COAL LIQUIDS
ELEMENTS
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUELS
HIGH PRESSURE
HIGH TEMPERATURE
HYDROCARBONS
HYDROGEN
LIQUEFACTION
LIQUIDS
MATERIALS
MATHEMATICAL MODELS
NITROGEN
NONMETALS
OIL YIELDS
OPTIMIZATION
ORGANIC COMPOUNDS
PARTICLE SIZE
PENTANE
SIZE
SOLVENTS
STOICHIOMETRY
TEMPERATURE DEPENDENCE
TEMPERATURE EFFECTS
THERMOCHEMICAL PROCESSES
TIME DEPENDENCE
YIELDS