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Transformation manner of the gas oil which uses the improvement of the gasoline fraction and the further treatment in order to make the yield of the gas oil fraction increase
Transformation manner of the gas oil which uses the improvement of the gasoline fraction and the further treatment in order to make the yield of the gas oil fraction increase
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机译：通过提高汽油馏分和进一步处理以提高粗柴油馏分收率的粗柴油的转化方式
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摘要
Process for the adjustment of the relative productions of petrol and gasoil from a petrol cut comprsing 4 - 15 C hydrocarbons to obtain a petrol with an improved octane index and a gasoil fraction with a high cetane index. The process is carried out in the following stages (1) membrane separation, B, of the hydrocarbon charge to obtain a selective separation of most of the linear olefins, cut beta, from the branched chain olefins, cut gamma and comprising petrols of higher octane index than the original charge; (2) (b) oligomerization, C, of the linear olefins, beta cut and in the effluents from the membrane separation; (C) (3) separation by distillation, D and of the effluents from oligomerization to give two cuts; cut delta comprises hydrocarbons of final boiling points lower than 150 - 200 [deg] C, and a cut and comprising hydrocarbons of initial boiling points greater than 150 - 200 [deg] C; (4) (d) hydrogenation, E and of the cut to obtain a gasoil of cetane index of at least 45; (5) (e) dehydrogenation, F, of the cut delta to convert paraffins to olefins and producing a cut mu which is partly recycled to the membrane separation stage.
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