Phenolic recycle solvent in two-stage coal liquefaction process

Details Phenolic recycle solvent in two-stage coal liquefaction process Phenolic recycle solvent in two-stage coal liquefaction process

1977-06-29

1979-01-09

Konopka, P. E.

Fuel and related compositions

Liquid fuels

Aluminum or heavy metal, other than lead, containing

44 1F, 208 8, 208 10, 208263, 201 17, C10L 910, C10G 1104, C10G 1106, C10B 5700

Patent

active

041336461

ABSTRACT:
An improved two-stage coal liquefaction process is provided, wherein solvent-boiling range phenolics, produced in the solubilization of the coal feed, are removed wholly or partially from recycle solvent at some point in the process prior to recycle to the first stage to control the level of phenolics in both stages of the process. The two-stage process involves a mild short contact time first stage operation, the removal of inorganic sulfur, ash and coal solids followed by a second stage operation, the severity of which is controlled as a function of the final product desired.

REFERENCES:
patent: 1838547 (1931-12-01), Haslam et al.
patent: 1838548 (1931-12-01), Haslam et al.
patent: 3117921 (1964-01-01), Gorim
patent: 3503864 (1970-03-01), Nelson
patent: 3594304 (1971-07-01), Seitzer et al.
patent: 3617531 (1971-11-01), Schlicht
patent: 3997425 (1976-12-01), Gatsis et al.
patent: 4056460 (1977-11-01), Malek

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