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发明授权
CN1706919B 含有另外的处理步骤以增加柴油馏分产量的改进汽油馏分和转化柴油的方法 失效 - 权利终止

含有另外的处理步骤以增加柴油馏分产量的改进汽油馏分和转化柴油的方法
摘要：
本发明涉及汽油类烃物料转化为辛烷值比该物料流更高的汽油馏分和十六烷值高于45的柴油馏分的方法，其包含下述步骤：a)通过膜分离烃物料的步骤(B)，其在允许选择性地分离存在于所述物料中并构成β馏分的绝大多数直链烯烃，和被称为γ馏分的含有绝大多数支链烯烃的馏分的条件下进行，其中该γ馏分构成辛烷值高于所述物料的高辛烷值的汽油，b)在温和的低聚反应条件下来自膜分离步骤(B)的流出物中所含的直链烯烃(β馏分)的低聚反应步骤(C)，c)通过蒸馏将来自低聚反应步骤的流出物分离成至少两种馏分的步骤(D)，d)将步骤c)所得的馏分之一氢化的步骤(E)。
摘要（英）：

The invention relates to a process for conversion of a gasoline-range hydrocarbon feed into a gasoline fraction with a higher octane rating than that of the feedstream, and a gasoil fraction with a cetane number higher than 45, including the following steps: a) a membrane separation step (B) applied to the hydrocarbon feed under conditions enabling selective separation of the majority of the linear olefins present in said feed and constituting the beta fraction, the fraction containing the majority of the branched olefins, termed the gamma fraction, constituting a gasoline with a high octane rating, greater than that of the feed, b) an oligomerisation step (C) applied to the linear olefins (beta fraction) contained in the effluent stream from the membrane separation step (B) under moderate oligomerisation conditions, c) a distillation separation step (D) applied to the effluent stream arising from the oligomerisation step in at least two fractions, d) a hydrogenation step (E) applied to one of the fractions obtained at step c).

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