Solvent treatment of coal for improved liquefaction

Mineral oils: processes and products – Phenolic or toxic oils

Patent

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208 10, 208 11LE, 201 25, C10G 100, C10B 4902, C10B 5304

Patent

active

H00000698

ABSTRACT:
Increased liquefaction yield is obtained by pretreating a slurry of solid carbonaceous material and a liquid hydrocarbonaceous solvent at a temperature above 200.degree. C. but below 350.degree. C. for a period of 10 minutes to four hours prior to exposure to liquefaction temperatures.

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