| 摘要 |
Liquefaction of coal is effected by heat treatment in an organic solvent and sepn. to form a stream (A) free from insolubles, and a stream (B) contg. insoluble matter. (A) and (B) are passed through further heat treatment zones, with treatment time for (B) less than that for (A) but sufficient to produce >=50% of the max. benzene-insoluble quinoline-soluble material content. The insoluble matter is then sepd. from (B). Used for conversion of coal boiling at up to 360 degrees C under 100 mm Hg. vacuum. The insoluble matter is readily sepd. e.g. by sedimentation, as coarse aggregates of ash deposited on the coal skeleton left by extn. before they disintegrate suddenly on further heat treatment to give fine ash particles. |
