Mineral oils: processes and products – Phenolic or toxic oils
Patent
1976-06-01
1978-10-10
Gantz, Delbert E.
Mineral oils: processes and products
Phenolic or toxic oils
C10G 106
Patent
active
041195248
ABSTRACT:
An improved coal deashing process wherein coal is mixed with a first dissolving solvent, solubilized and flashed to provide a prepared mixture, and the prepared mixture is mixed with a second dissolving solvent to produce a feed mixture. The insoluble coal products produced are separated from the feed mixture as a first heavy fraction in a first separation zone and the soluble coal products are recovered as a second heavy fraction from a second separation zone. The second dissolving solvent is recovered from the first heavy fraction and the second heavy fraction for recycling to aid in the production of the feed mixture. The first dissolving solvent is recovered from the first and the second heavy fractions and recycled to aid in solubilization of the coal.
REFERENCES:
patent: 2476999 (1949-07-01), Orchin
patent: 3607717 (1971-09-01), Roach
patent: 3791956 (1974-02-01), Corin et al.
patent: 3852183 (1974-12-01), Snell
patent: 3954595 (1976-05-01), Sze et al.
patent: 3974073 (1976-08-01), Sze et al.
patent: 3997425 (1976-12-01), Catsis et al.
Selvig et al. "Analyses of Ash From U.S. Coals" Bulletin #567, Bureau of Mines 1956.
Baldwin Roger A.
Leonard Robert E.
Addison William G.
Gantz Delbert E.
Hellwege James W.
Kerr-McGee Corporation
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