M. Cloke et Cx. Wang, LIQUEFACTION BEHAVIOR OF THE MACERAL GROUPS IN POINT-OF-AYR COAL USING HYDROGENATED ANTHRACENE OIL IN A TUBING BOMB AT VARYING TEMPERATURES, Energy & fuels, 9(3), 1995, pp. 560-565
Point of Ayr bituminous coal was liquefied in hydrogenated anthracene
oil in a tubing bomb over a range of temperatures (300-450 degrees C,
at 25 degrees C increments). The residual material was investigated mi
croscopically to determine the volume percentage of various residues a
nd conversion ratio. The hydrogenation behavior of each maceral group
was investigated and it was found that the vitroplast formed from vitr
inite has different optical features from that formed from liptinite,
with the liquefaction of liptinite occurring mainly above 400 degrees
C and that of vitrinites at lower temperatures, Two types of semicoke
were recognized. The influence of temperature, residence time, and coa
l/solvent ratio on coal conversion was examined and compared with the
above behavior.