| 摘要 |
The sep. of ash and undissolved hydrocarbon particles from the solubilized coal liq. is facilitated by diln. of the coal liq., prior to the solid-liq. sep. stage by addn. of a mixt. of a light oil fraction boiling no higher than 500oF and C2-10 alc. which froms a homogeneous mixt. with the coal liq.
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