Patent ID: 11873457
Assignee: CHINA PETROLEUM & CHEMICAL CORPORATION
Field: Basic materials chemistry (Chemistry)
Classification: CPC C | IPC C

Claim 3:
4. The process according to claim 1, further comprising:
subjecting the feedstock oil to a second hydrotreatment in a second hydrotreating reactor prior to step 1);
the second hydrotreatment is carried out in the presence of a second hydrotreating catalyst under conditions including:
a hydrogen partial pressure of about 3.0-20.0 MPa, a reaction temperature of about 300-450° C., a hydrogen-to-oil volume ratio of about 100-2000 standard cubic meter/cubic meter, and a volume space velocity of about 0.1-3.0 h−1;
the second hydrotreating catalyst comprises about 70-99 wt % of a carrier, which is one or more selected from the group consisting of alumina, silica and amorphous silica-alumina, and about 0.1-30 wt % of an active metal (calculated as oxide) selected from the group consisting of Group VIB metals, Group VIII metals, and a combination thereof.