| 摘要 |
PURPOSE:To obtain a hydroliquefied gas in a simple process in a high yield and at a low cost, by preheating and reacting a particular raw coal slurry in the presence of hydrogen and further preheating and hydroliquefying the coal slurry using a recovered heavy distillate liquefied oil as a medium oil. CONSTITUTION:A raw coal slurry 4 was prepared from 1kg (on the dry basis) of raw coal powder 1, 10-70g of a binary mixed hydrogenation catalyst 2 comprised of 1pt.wt. low-temp. active catalyst (e.g., nickel-based catalyst) and 1-10pts.wt. high- temp. active catalyst (e.g., Fe-based catalyst) and 1.1-5kg of a medium oil 3 comprised of a heavy distillate liquefied oil 16 having a b.p. of 300-538 deg.C which has been obtd. by distilling the hydroliquefied oil in vacuo is preheated in a first preheater to 250-450 deg.C together with a hydrogen gas 5 such as a hydrogen-rich gas obtd. by gas-liq. separation of the hydroliquefied product. The slurry is led to a preheated reactor 7 to cause a hydrogenation reaction, while the raw coal powder 1 is dissolved in the medium oil 3. It is preheated in a second preheater 8, hydroliquefied in a water stream liquefaction reactor 9. The reaction mixture is led to a gas-liq. separator 10, where it is separated into a hydrogen-rich gas 11 and an oil component 12. After removal of solid matter with a solid-liq. separator 13, the oil component 12 is separated into a light oil 15 and heavy distillate liquefied oil 16.
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