抚顺页岩油柴油馏分加氢精制的工艺条件

以硫化态Co-Mo/Al2O3为催化剂，利用固定床小型加氢反应装置，考察了反应温度、反应压力、体积空速、氢/油体积比对抚顺页岩油柴油馏分加氢精制效果的影响。结果表明，升高反应温度、增大反应压力、降低体积空速，有利于抚顺页岩油柴油馏分的脱硫、脱氮和烯烃饱和，特别是可明显提高加氢脱氮效果，而氢/油体积比的改变对产物性质影响相对较小。在反应温度380℃、反应压力7MPa、体积空速0.5h-1、氢/油体积比600的条件下，抚顺页岩油柴油馏分加氢精制后，其杂原子和不饱和烃含量低、密度小、芳香烃含量少，可作为优质清洁柴油直接使用。

REACTION CONDITIONS FOR CATALYTIC HYDROTREATING OF DIESEL DISTILLATE FROM FUSHUN SHALE OIL

Catalytic hydrogenation of diesel fraction (200-360℃) from Fushun shale oil was carried out in a fixed-bed reactor with sulfided Co-Mo/Al2O3 as catalyst. The effects of several factors on the product properties were preliminarily investigated, including reaction temperature, hydrogen pressure, liquid hourly space velocity and hydrogen/feedstock volume ratio. The results showed that increasing temperature, high hydrogen pressure and long residence time (reciprocal LHSV) promoted the removal of sulfur and nitrogen, the saturation of alkene, while hydrogen/feedstock volume ratio had the smaller influence. Under the selected conditions of θ=380℃, p=7.0MPa, LHSV=0.5h-1, V(H2)/V(oil)=600 for the catalytic hydrogenation of diesel fraction from Fushun shale oil, the product oil possessed low content of sulfur, nitrogen and alkene, light density and high cetane number, which could be directly used as the clean diesel fuel.