Process for selective production of propylene from hydrocarbon fractions with four carbon atoms
    1.
    发明授权
    Process for selective production of propylene from hydrocarbon fractions with four carbon atoms 有权
    从具有四个碳原子的烃馏分中选择性生产丙烯的方法

    公开(公告)号:US06743958B2

    公开(公告)日:2004-06-01

    申请号:US09846690

    申请日:2001-05-02

    IPC分类号: C07C604

    摘要: For the selective production of propylene from an olefinic C4 fraction, a process is implemented that successively comprises: 1) the selective hydrogenation of butadiene with isomerization of butene-1 into butene-2; 2) the separation by distillation of a mixture that is rich in isobutene and butene-1 at the top and a fraction that is rich in butene-2 at the bottom; 3) the skeletal isomerization of isobutene into n-butenes on the top fraction, with recycling in stage 1; and 4) the metathesis of the butene-2-rich fraction with ethylene.

    摘要翻译: 对于从烯烃C4馏分中选择性生产丙烯的方法,其顺序包括:1)丁烯与丁烯-2的异构化的选择性氢化; 2)通过蒸馏分离富集的混合物 在顶部的异丁烯和丁烯-1,底部富含丁烯-2的馏分; 3)在第一阶段循环的异丁烯在顶级馏分上的正丁烯异构化成正丁烯; 和4)富含丁烯的富烯馏分与乙烯的复分解。

    Process for selective production of propylene from hydrocarbon fractions with four carbon atoms
    2.
    发明授权
    Process for selective production of propylene from hydrocarbon fractions with four carbon atoms 有权
    从具有四个碳原子的烃馏分中选择性生产丙烯的方法

    公开(公告)号:US06916448B2

    公开(公告)日:2005-07-12

    申请号:US10682980

    申请日:2003-10-14

    摘要: For the selective production of propylene from an olefinic C4 fraction, a process is implemented that successively comprises: 1) the selective hydrogenation of butadiene with isomerization of butene-1 into butene-2; 2) the separation by distillation of a mixture that is rich in isobutene and butene-1 at the top and a fraction that is rich in butene-2 at the bottom; 3) the skeletal isomerization of isobutene into n-butenes on the top fraction, with recycling in stage 1; and 4) the metathesis of the butene-2-rich fraction with ethylene. The advantage of this process is to produce in a very selective way polymerization-quality propylene from all of the olefinic compounds of a C4 fraction, including isobutene.

    摘要翻译: 对于从烯烃C 4 H 4馏分选择性生产丙烯,实施了连续包括:1)丁烯与丁烯-2的异构化的选择性氢化; 2)通过蒸馏分离富含异丁烯和顶部丁烯-1的混合物和底部富含丁烯-2的馏分; 3)将异丁烯骨架异构化为顶级馏分中的正丁烯,并在第1阶段循环使用; 和4)富含丁烯的富烯馏分与乙烯的复分解。 该方法的优点是以非常有选择的方式生产聚合优质的丙烯从C 4 S 4馏分的所有烯烃化合物,包括异丁烯。

    Catalytic composition and a process for oligomerizing ethylene, in particular to 1-hexene
    4.
    发明授权
    Catalytic composition and a process for oligomerizing ethylene, in particular to 1-hexene 有权
    催化组合物和使乙烯低聚的方法,特别是1-己烯

    公开(公告)号:US06828269B2

    公开(公告)日:2004-12-07

    申请号:US09745441

    申请日:2000-12-26

    IPC分类号: C08F200

    摘要: A catalytic composition is obtained by mixing at least one chromium compound with at least one aryloxy compound of an element M selected from the group formed by magnesium, calcium, strontium and barium, with general formula M(RO)2-nXn, where RO is an aryloxy radical containing 6 to 80 carbon atoms, X is a halogen or a hydrocarbyl radical containing 1 to 30 carbon atoms and n is a whole number that can take values of 0 to 2, and with at least one aluminum compound selected from hydrocarbylaluminum compounds (tris(hydrocarbyl)-aluminum, chlorinated or brominated hydrocarbylaluminum compounds) and aluminoxanes. The catalytic composition can be used in an ethylene oligomerization process, in particular to produce 1-hexene.

    摘要翻译: 通过将至少一种铬化合物与选自由镁,钙,锶和钡形成的基团的至少一种芳氧基化合物与通式M(RO)2-nXn混合,得到催化组合物,其中RO为 含有6〜80个碳原子的芳氧基,X是卤素或含有1至30个碳原子的烃基,n是可以取0至2的整数,并且与至少一种选自烃基铝化合物的铝化合物 (三(烃基)铝,氯化或溴化烃基铝化合物)和铝氧烷。 催化组合物可用于乙烯低聚方法,特别是生产1-己烯。

    Process and unit for carrying out a reaction on an organic feed, such as dimerisation or metathesis, in the presence of a polar phase containing a catalyst
    6.
    发明授权
    Process and unit for carrying out a reaction on an organic feed, such as dimerisation or metathesis, in the presence of a polar phase containing a catalyst 失效
    在含有催化剂的极性相存在下,在有机原料上进行反应的方法和单元,例如二聚或复分解

    公开(公告)号:US06284937B1

    公开(公告)日:2001-09-04

    申请号:US09084353

    申请日:1998-05-27

    IPC分类号: C07C226

    摘要: A process for carrying out a reaction on an organic feed, for example dimerization, co-dimerization, oligomerization or metathesis of olefins, as described in which the catalyst is a catalytic metal compound dissolved in a non-aqueous ionic medium which is not or is only slightly miscible with hydrocarbons. The reaction is carried out in a system comprising at least two treatment loops each comprising at least one reaction zone and at least one zone for separating the organic and polar phases between which the polar medium containing the catalytic metal compound, and the organic phase circulate. Fresh polar phase is injected into the second loop and used polar phase is eliminated from the first loop. The hydrocarbon to be transformed is injected into the first loop and the products are withdrawn from the second loop. The invention also concerns a unit for carrying out the process.

    摘要翻译: 对有机原料进行反应的方法,例如烯烃的二聚,共二聚,低聚或复分解,其中催化剂是溶解在非水性离子介质中的催化金属化合物,其不是或不是 只与碳氢化合物轻微混溶。 该反应在包括至少两个处理回路的系统中进行,每个处理回路各自包含至少一个反应区和至少一个用于分离有机相和极性相的区域,在该区域之间含有催化金属化合物的极性介质和有机相循环。 新鲜极性相注入到第二回路中,并且使用极性相从第一回路中消除。 将待转化的烃注入第一回路中,并从第二回路中取出产物。 本发明还涉及用于执行该过程的单元。