Raw oil (VGO) was hydrotreated by using the fixed bed hydrogenation unit.The effect of reaction temperature,liquid hourly space velocity,ratio of hydrogen to oil on the hydrogenation effect was investigated by using control variable method.Taking Ni-Mo/γ-Al2O3 as catalyst,the hydrogenation process was optimized.The results show that increasing temperature,reducing the liquid hourly space velocity appropriately and increasing volume ratio of hydrogen to oil can improve the desulfurization and denitrification effect of the catalyst.Ni-Mo/γ-Al2O3 catalyst has the best hydrogenation refining effect under high pressure when reaction temperature is 400 ℃,the liquid space speed is 0.25 h-1 and volumetric ratio of hydrogen to oil is about 2 000∶1,.%采用固定床加氢装置对原料油(蜡油)进行加氢精制研究,采用控制变量法,考察了反应温度,液时空速,氢油比等对加氢效果的影响.以Ni-Mo/γ-A12O3作为催化剂对加氢工艺进行优化,由数据表明升高温度、适当降低液时空速、增大氢油体积比,均有助于提高催化剂的脱硫和脱氮效果.Ni-Mo/γ-A12O3催化剂在中高压条件下,反应温度为400℃,液时空速为0.25 h-1,氢油体积比在2 000左右时,加氢精制的效果最好.
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