Method for the generation of recycle solvents in coal liquefacti

Details Method for the generation of recycle solvents in coal liquefacti Method for the generation of recycle solvents in coal liquefacti

1981-01-15

1982-06-15

Gantz, Delbert E.

Mineral oils: processes and products

Phenolic or toxic oils

C10G 100

Patent

active

043349773

ABSTRACT:
A method is described to improve a coal liquefaction process by the use of a recycle solvent comprised of two fractions: the first, a lower boiling fraction, is obtained by an atmospheric distillation and is subsequently hydrotreated to enrich its hydrogen donor capacity; the second is a higher boiling fraction that is enriched in desirable hydrogen transfer agents by a solvent extraction process. The combined recycle solvent thus obtained is more efficient in transferring gas phase H.sub.2 to the coal and enables other significant process improvements.

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