Mineral oils: processes and products – Phenolic or toxic oils
Patent
1982-02-11
1983-08-09
Gantz, Delbert E.
Mineral oils: processes and products
Phenolic or toxic oils
208 10, C10G 106
Patent
active
043977324
ABSTRACT:
An improved coal liquefaction process is provided whereby coal conversion is improved and yields of pentane soluble liquefaction products are increased. In this process, selected feed coal is pulverized and slurried with a process derived solvent, passed through a preheater and one or more dissolvers in the presence of hydrogen-rich gases at elevated temperatures and pressures, following which solids, including mineral ash and unconverted coal macerals, are separated from the condensed reactor effluent. The selected feed coals comprise washed coals having a substantial amount of mineral matter, preferably from about 25-75%, by weight, based upon run-of-mine coal, removed with at least 1.0% by weight of pyritic sulfur remaining and exhibiting vitrinite reflectance of less than about 0.70%.
REFERENCES:
patent: 4244812 (1981-01-01), Baldwin et al.
Given et al, "Dependence of Coal Liquefaction Behavior on Coal Characteristics, 1, Vitrinite-Rich Samples", Fuel, vol. 54, Jan. 1975.
Bent & Brown, "The Infra-Red Spectra of Macerals", Fuel, vol. 40, p. 47, 1961.
"Coal", Encyc. of Chemical Technology, Kirk-Othmer, vol. 6, 3rd ed. pp. 228, 238, 247, 282.
Givens Edwin N.
Hoover David S.
Gantz Delbert E.
International Coal Refining Company
Johnson Lance
Wachter Mark F.
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