Process for the discharge of ash concentrate from a coal deashin

Details Process for the discharge of ash concentrate from a coal deashin Process for the discharge of ash concentrate from a coal deashin

1978-03-20

1979-07-31

Gantz, Delbert E.

Mineral oils: processes and products

Phenolic or toxic oils

208177, C10G 100

Patent

active

041629582

ABSTRACT:
An improved process for the continuous discharge from a first separation zone of a first heavy fraction comprising insoluble coal products and solvent in a coal deashing process utilizing solvents at elevated pressures and temperatures near the critical temperature of the solvent. The continuous discharge of the insoluble coal products in a dry, powdery form, is achieved by monitoring the temperature level of the solvent and insoluble coal products within a transfer conduit after withdrawal and pressure reduction from the first separation zone operating pressure, at a temperature below about 550 degrees F.

REFERENCES:
patent: 2476999 (1949-07-01), Orchin
patent: 3375188 (1968-03-01), Bloomer
patent: 3379638 (1968-04-01), Bloomer et al.
patent: 3852183 (1974-12-01), Snell
patent: 4090958 (1978-05-01), Leonard

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