| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for hydrogenating and desulfurizing a light oil fraction of petroleum hydrocarbons containing a sulfur content to achieve a sulfur content of≤10 mass ppm. SOLUTION: In the method for hydrogenating and desulfurizing the light oil fraction by feeding the light oil fraction to a reaction zone filled with a catalyst, a temperature gradient exists in an arbiturary zone within the reactive zone. Within the temperature gradient zone, a desulfurization catalyst comprising cobalt-molybdenum as active metals is filled in a low-temperature zone, and a catalyst comprising nickel-molybdenum as active metals and/or a catalyst comprising nickel-tungsten as active metals is filled in a high-temperature zone. COPYRIGHT: (C)2004,JPO&NCIPI
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