| 摘要 |
PROBLEM TO BE SOLVED: To provide a technology for obtaining an isomerized gasoline with little sulfur content by performing devulcanization and isomerization of a light hydrocarbon oil contg. sulfur, wherein isomerization can be performed simultaneously with devulcanization which has been indispensable as a pretreatment process of isomerization, in order to simplify required installations and decrease the running cost. SOLUTION: A catalyst with a carrier made of an oxide or a hydroxide of zirconium, having a sulfate radical at a concn. of 1-3 mass % as a sulfure component, contg. palladium or nickel at a concn. of 0.05-10 mass % (wherein platinum may be included at a concn. of 0.05-10 mass % when palladium is included in the catalyst), stabilized by baking at a temp. of 550-800 deg.C, and having a specific surface of 50-150 m2/g, is used. To this, a light hydrocarbon oil with a sulfur content of 700 mass ppm or less, and hydrogen contact the catalyst under the reaction conditions of temp.: 140-400 deg.C, pressure: 1.0-4.5 MPa, LHSV: 1.0-10 h-1, and H2/oil ratio: 1-3 mol/mol, to perform hydrodesulfurization and isomerization simultaneously. |
