| 摘要 |
The present invention relates to a method of manufacturing at least two kinds of hydrocarbon cuts which have low sulfuric contents from hydrocarbon mixtures which have an initial boiling point of 35-100 deg. C and a final boiling point of 260-340 deg. C and a sulfuric content of 30-10,000 weight ppm. According to the present invention, a method comprises: a) a first hydrodesulfurization step under the presence of hydrogen and hydrodesulfurization catalysts; b) an extraction step of extracting hydrogen sulfide from an extract which is partially desulfurized as obtained in step a); c) a second hydrodesulfurization step with hydrogen and hydrodesulfurization for the mixture which is partially desulfurized as obtained in step b), under the temperature higher than that of the first hydrodesulfurization step; and d) a separation step of separating the desulfurized mixture obtained in step c) into at least two kinds, light and heavy, of hydrocarbon cuts, the light hydrocarbon cuts having a boiling point, which ranges from an initial boiling point and to a final boiling point of 160-220 deg. C, and having a sulfuric content of less than 50 weight ppm. |
