Coal liquefaction

Details Coal liquefaction Coal liquefaction

1984-08-13

1985-06-11

Gantz, D. E.

Mineral oils: processes and products

Phenolic or toxic oils

C10G 106

Patent

active

045227004

ABSTRACT:
In a two-stage liquefaction wherein coal, hydrogen and liquefaction solvent are contacted in a first thermal liquefaction zone, followed by recovery of an essentially ash free liquid and a pumpable stream of insoluble material, which includes 850.degree. F.+ liquid, with the essentially ash free liquid then being further upgraded in a second liquefaction zone, the liquefaction solvent for the first stage includes the pumpable stream of insoluble material from the first liquefaction stage, and 850.degree. F.+ liquid from the second liquefaction stage.

REFERENCES:
patent: 3477941 (1969-11-01), Nelson
patent: 4189371 (1980-02-01), Maa et al.
patent: 4190518 (1980-02-01), Giannetti et al.
patent: 4328088 (1982-05-01), Anderson et al.
patent: 4372838 (1983-02-01), Kulik et al.

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