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U.S. Department of Energy
Office of Scientific and Technical Information

Process for dissolving coal in hydrocarbon mixtures

Patent ·
OSTI ID:7089788
A process is described for bringing ground coal or similar carbon-containing raw materials into solution with aromatic solvents under elevated pressure and at elevated temperature. The solvents used are high-aromatic residues obtained from the pyrolysis of petroleum fractions, having an average boiling point of above 380/sup 0/ C., and/or high-aromatic distillates from the pressure/heat treatment of coal tar pitch, having an average boiling point of above 380/sup 0/ C., as well as from 5 to 30% of aromatic products or mixtures of aromatic products, having a boiling point of below 250/sup 0/ C.
Assignee:
Rutgerswerke Aktiengesellscha (Germany, Federal Republic of)
Patent Number(s):
US 4430193
OSTI ID:
7089788
Country of Publication:
United States
Language:
English