Processes for catalytically reforming naphtha

摘要

Disclosed herein is a process for catalytically reforming naphtha, comprising, in the presence of hydrogen gas, contacting naphtha with at least one reforming catalyst under the conditions of a pressure ranging from 0.15 to 3.0 MPa, a temperature ranging from 300 to 540° C., a volume space velocity ranging from 2.1 to 50 h−1, to carry out a shallow catalytic reforming reaction so as to achieve a naphthene conversion ratio of greater than 85 mass %, and a conversion ratio of paraffins to arenes and C4− hydrocarbons of less than 30 mass %.

主权项

1. A process for catalytically reforming naphtha, comprising, in the presence of hydrogen gas, contacting naphtha with at least one reforming catalyst under the conditions of a pressure ranging from 0.15 to 3.0 MPa, a temperature ranging from 300 to 540° C. and a naphtha volume space velocity ranging from 8.0 to 25.0 h−1 to carry out a shallow catalytic reforming reaction, wherein naphthene in naphtha is converted to arenes, so as to achieve a naphthene conversion ratio of greater than 85 mass %, and a conversion ratio of paraffins to arenes and C4− hydrocarbons of less than 30 mass %, the naphtha is a straight run naphtha and comprises from 30 to 85 mass % of alkanes, from 10 to 50 mass % of naphthenes and from 5 to 30 mass % of arenes, and said reforming catalyst comprises from 0.01 to 5.0 mass % of a Group VIII metal, from 0.01 to 5.0 mass % of a halogen and from 90.0 to 99.97 mass % of an alumina support.