Two-stage coal liquefaction process with process-derived solvent

Details Two-stage coal liquefaction process with process-derived solvent Two-stage coal liquefaction process with process-derived solvent

1979-09-07

1981-03-10

O'Keefe, Veronica

Mineral oils: processes and products

Phenolic or toxic oils

208 10, C10G 100

Patent

active

042552486

ABSTRACT:
Disclosed is a two-stage process for the production of clean liquid hydrocarbons from coal. In the process subdivided coal is dissolved in a process derived solvent at a temperature in the range 425.degree. C.-480.degree. C. The dissolver effluent is passed through a catalytic reactor operating under hydrocracking conditions, including a temperature in the range 340.degree. C.-400.degree. C. to produce normally liquid products and recycle solvent. The solvent is further cooled to precipitate unconverted heptane insolubles prior to recycle to the dissolution stage.

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patent: 3997425 (1976-12-01), Gatsis et al.
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patent: 4081358 (1978-03-01), Tan et al.
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patent: 4082643 (1978-04-01), Gatsis et al.
patent: 4082644 (1978-04-01), Gatsis et al.
patent: 4083769 (1978-04-01), Hildebrand et al.
patent: 4111788 (1978-05-01), Chervenak et al.

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