26.液化反応の初期過程に関する研究 : (1)液化反応の初期段階の制御と液化油収率の向上

抄録

Liquefaction conditions combined with prethermal treatment were investigated on Yallourn coal in order to increase oil yield with relation to effect of prethermal treatment on yield and properties of liquefaction product. It was considered that the effect of prethermal treatment is to suppress retrogressive reaction during initial stage of liquefaction. A highly active catalyst contribute mainly to this effect. Furthermore, it was found that concentration of coal slurry after prethermal treatment to decrease solvent/coal ratio at liquefaction reaction was effective to increase oil yield. Remarkable high yield of HS fraction was obtained by combination of prethermal treatment with concentration of slurry after treatment.