Coal liquefaction with subsequent bottoms pyrolysis

Details Coal liquefaction with subsequent bottoms pyrolysis Coal liquefaction with subsequent bottoms pyrolysis

1976-08-11

1978-04-18

Gantz, Delbert E.

Mineral oils: processes and products

Phenolic or toxic oils

208106, 208127, C10G 106

Patent

active

040850315

ABSTRACT:
In a coal liquefaction process wherein heavy bottoms produced in a liquefaction zone are upgraded by coking or a similar pyrolysis step, pyrolysis liquids boiling in excess of about 1000.degree. F. are further reacted with molecular hydrogen in a reaction zone external of the liquefaction zone, the resulting effluent is fractionated to produce one or more distillate fractions and a bottoms fraction, a portion of this bottoms fraction is recycled to the reaction zone, and the remaining portion of the bottoms fraction is recycled to the pyrolysis step.

REFERENCES:
patent: 3018242 (1962-01-01), Gorin
patent: 3188179 (1965-06-01), Gorin
patent: 3717570 (1973-02-01), Hochman et al.
patent: 3726784 (1973-04-01), Correa et al.
patent: 4039424 (1977-08-01), Hyde et al.

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