抄録
Taiheiyo-coal was liquefied in a tubular reactor at 350°C-425°C under 14.8 MPa of hydrogen pressure without catalyst. The residence time of coal slurry in the isothermal section of reactor was 2-47 minutes.
At 350°C, the amount of gaseous products was independent on the reaction time and 80 wt% of them was carbondioxide. At higher temperature than 350°C, the pro-duction of methane severely increased with the reaction time. Under these experi-mental conditions, Taiheiyo-coal converted rapidly to the pyridine soluble matter even at low temperature. But extracts of Taiheiyo-coal were hardly hydrocracked to vac-uum distilled oil.
On the whole, the experimental results showed that the products of liquefaction at the short residence time were mainly SRC and small amount of gaseous products. The characteristics of SRC, however, did not changed in these experimental condi-tions
