FC-30单段高中油型加氢裂化催化剂

摘要

以改性Y型分子筛为主要酸性组分,W-Ni为加氢组分,采用浸渍法制备了单段高中油型加氢裂化催化剂(牌号为FC-30),并进行了工业放大试生产.以伊朗VGO为原料,在反应压力为15.7 MPa,体积空速为0.92 h-1,氢气/原料油(体积比)为1 200∶1的条件下,于200 mL加氢裂化实验装置中,对该催化剂及同类FC-28催化剂性能进行了对比评价.结果表明:FC-30的反应温度较FC-28低3℃,二者中间馏分油选择性相当;采用该催化剂生产的石脑油芳烃潜含量(体积分数)为62.0％,是优质的重整原料;尾油的芳烃指数为12.9,可以作为蒸汽裂解制乙烯的原料;工业试生产的FC-30性质、反应活性及中间馏分油选择性与实验室结果相当.%FC-30 single-stage high-middle distillate hydrocracking catalyst was prepared by the impregnation method with modified Y-zeolite as the main acidic component,W-Ni as the hydrogenation active component.The industrial scale production experiment was studied as well.The catalyst performance was evaluated in comparison with the similar FC-28 catalyst in a 200 mL hydrocracking experiment device with Iran VGO as feed stock under the conditions of the pressure 15.7 MPa,space velocity 0.92 h-1 and volume ratio of H2 to feedstock 1 200∶1.The results showed that the reaction temperature of FC-30 was 3 ℃ lower than that of FC-28 with the comparable middle-distillate selectivity.The naphtha produced by FC-30 catalyst was high-quality reforming materials with aromatic latent content 62.0％.The tail oil with BMCI value 12.9 could be used as the raw material for preparing ethylene by steam cracking.The character,reaction activity and middle-distillate selectivity of the industrial catalyst production were similar with those of the laboratory catalyst sample.