公开(公告)号：US06576119B2

公开(公告)日：2003-06-10

申请号：US09794144

申请日：2001-02-28

申请人： Katsuaki Ishida ,  Manabu Kobayashi ,  Hiroki Koyama ,  Seiji Togawa ,  Futoshi Sakaguchi

发明人： Katsuaki Ishida ,  Manabu Kobayashi ,  Hiroki Koyama ,  Seiji Togawa ,  Futoshi Sakaguchi

IPC分类号： C10G6502

CPC分类号： C10G65/10 ,  C10G49/002

摘要： The two-stage hydrocracking process of the present invention comprises bringing the first-stage feed oil containing a hydrocarbon component and having a boiling point of 316° C. or higher into contact with the first-stage catalyst in the presence of hydrogen to obtain a first-stage product; separating the first-stage product into heavy component and light component containing the middle distillate products; bringing the second-stage feed oil containing heavy component of the first-stage reaction product into contact with the second-stage catalyst in the presence of hydrogen to obtain the second-stage product; separating the second-stage product into heavy component and light component comprising middle distillate products and recycling part of the heavy component of the second-stage product to the second-stage feed oil. Hydrocracking activity of the first-stage catalyst is higher than hydrocracking activity of the second-stage catalyst.

摘要翻译： 本发明的两级加氢裂化方法包括使含有烃成分的沸点为316℃以上的第一级原料油在氢存在下与第一级催化剂接触，得到 第一阶段产品; 将第一阶段产品分离成含有中间馏分产物的重组分和轻组分; 使含有第一级反应产物的重组分的第二级进料油在氢气存在下与第二级催化剂接触以获得第二级产物; 将第二级产物分离成包含中间馏分产物的重组分和轻组分，并将第二阶段产物的重组分的一部分再循环到第二阶段进料油中。 第一级催化剂的加氢裂化活性高于第二级催化剂的加氢裂化活性。