公开(公告)号：US20020183576A1

公开(公告)日：2002-12-05

申请号：US10109660

申请日：2002-04-01

Applicant: SNAMPROGETTI S.p.A.

Inventor： Cristina Flego ,  Carlo Perego ,  Mario Marchionna

IPC: C07C002/12

CPC classification number: C10G50/00 ,  C10G2400/04

Abstract: Process for obtaining a nulldiesel cutnull fuel having a CN cetane number equal to or greater than 48 and a content of aromatics lower than 0.4% by weight starting from olefins or their mixtures, characterized in that it comprises the following steps: oligomerizing said olefins having from 2 to 10 carbon atoms in the presence of synthetic zeolites containing silicon, titanium and aluminum oxides, having a molar ratio SiO2/Al2O3 ranging from 100 to 300, a molar ratio SiO2/TiO2 greater than 41 and a extraframework titanium oxide content which is zero or less than 25% with respect to the whole titanium oxide present, at a temperature ranging from 180 to 300null C., at a pressure greater than 40 atm and a WHSV space velocity equal to or greater than 1 hnull1, in order to obtain a stream essentially consisting of oligomerized C5-C24 hydrocarbons; distilling the stream obtained from the oligomerization in order to separate a C12-C24 hydrocarbon stream from a C5-C12 hydrocarbon stream; hydrogenating the separated C12-C24 hydrocarbon stream.

Abstract translation: 获得CN十六烷值等于或大于48的“柴油切割”燃料和烯烃或其混合物开始的低于0.4重量％的芳烃含量的方法，其特征在于其包括以下步骤：使所述烯烃低聚 在含有硅，钛和氧化铝的合成沸石存在下具有2至10个碳原子，摩尔比为SiO 2 / Al 2 O 3的摩尔比为100-300，SiO 2 / TiO 2的摩尔比大于41，以及外部结构的二氧化钛含量 相对于存在的整个氧化钛，在180-300℃的温度，大于40atm的压力和等于或大于1h -1的WHSV空速下，为零或小于25％ 以获得基本上由低聚C5-C24烃组成的物流; 蒸馏从低聚获得的物流，以分离C 12 -C 24烃物流与C5-C12烃物流; 氢化分离的C12-C24烃流。