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    PROCESS FOR PREPARING 1,3-BUTADIENE FROM N-BUTENES BY OXIDATIVE DEHYDROGENATION
    1.
    发明申请
    PROCESS FOR PREPARING 1,3-BUTADIENE FROM N-BUTENES BY OXIDATIVE DEHYDROGENATION 审中-公开

    公开(公告)号：US20170334809A1

    公开(公告)日：2017-11-23

    申请号：US15523862

    申请日：2015-11-02

    申请人： BASF SE ,  Linde AG

    发明人： Philipp GRUNE ,  Stephan DEUBLEIN ,  Christian WALSDORFF ,  Jan Pablo JOSCH ,  Rainer RAHM ,  Hendrik REYNEKE ,  Anton WELLENHOFER ,  Ulrike WENNING ,  Christine TOEGEL ,  Heinz BOELT

    IPC分类号： C07C5/48 ,  C07C7/04 ,  C07C7/00 ,  C07C7/11 ,  C07C11/167

    CPC分类号： C07C5/48 ,  C07C7/005 ,  C07C7/04 ,  C07C7/08 ,  C07C7/11 ,  C07C11/167 ,  C07C2523/31 ,  C07C2523/843 ,  C07C2523/847

    摘要： A process for preparing butadiene from n-butenes, comprising the steps of: A) providing an input gas stream comprising n-butenes; B) feeding the input gas stream comprising n-butenes and a gas containing at least oxygen into at least one oxidative dehydrogenation zone and oxidatively dehydrogenating n-butenes to butadiene, giving a product gas stream; Ca) cooling the product gas stream by contacting with a circulating cooling medium in at least one cooling zone; Cb) compressing the cooled product gas stream in at least one compression stage, giving at least one aqueous condensate stream c1 and one gas stream c2; D) removing uncondensable and low-boiling gas constituents comprising oxygen and low-boiling hydrocarbons as gas stream d2 from the gas stream c2 by absorbing the C4 hydrocarbons in an absorbent, giving an absorbent stream laden with C4 hydrocarbons and the gas stream d2, and then desorbing the C4 hydrocarbons from the laden absorbent stream, giving a C4 product gas stream d1; E) separating the C4 product stream d1 by extractive distillation; F) distilling the stream e1 into a stream f1 consisting essentially of the selective solvent and a stream f2 comprising butadiene; G) removing a portion of the aqueous phase of the cooling medium which circulates in step Ca) as aqueous purge stream g; H) distillatively separating the aqueous purge stream g into a fraction h1 and a fraction h2 depleted of organic constituents.

    Lower alkane oxidative dehydrogenation catalysts and a process for producing olefins
    7.
    发明授权
    Lower alkane oxidative dehydrogenation catalysts and a process for producing olefins 有权
    低级烷烃氧化脱氢催化剂和烯烃生产方法

    公开(公告)号：US06239325B1

    公开(公告)日：2001-05-29

    申请号：US09313658

    申请日：1999-05-18

    申请人： Nobuji Kishimoto ,  Etsushige Matsunami

    发明人： Nobuji Kishimoto ,  Etsushige Matsunami

    IPC分类号： C07C532

    CPC分类号： B01J23/8885 ,  B01J23/30 ,  B01J23/888 ,  C07C5/48 ,  C07C2523/12 ,  C07C2523/18 ,  C07C2523/30 ,  C07C2523/31 ,  C07C11/02

    摘要： The invention provides process for oxidative dehydrogenation of lower alkanes, by vapor phase oxidative dehydrogenation of C2-C5 lower alkanes in the presence of a catalyst and molecular oxygen to produce the corresponding olefins, in which the catalyst has a composition expressed by a general formula (1) below: A&agr;Sb&bgr;W&ggr;D&dgr;Ox   (1) in which A is at least one metal selected from the group consisting of molybdenum and chromium; Sb is antimony; W is tungsten; O is oxygen; and D is at least one metal selected from the group consisting of V, Nb, Ta, Fe, Co, Ni, Cu, Ag, Zn, B, Tl, Sn, Pb, Te, Li, Na, K, Rb, Cs, Mg, Ca, Sr, Ba, La, Ce and Sm; &agr;, &bgr;, &ggr;, &dgr; and x denote atomic numbers of A, Sb, W, D and O, respectively, where when &agr;=1, &bgr;=0.5-10, &ggr;=0.1-10 and &dgr;=0-3; and x is a numerical value determined by the state of oxidation of those elements other than oxygen. When these catalysts are used in reactions for oxidizing and dehydrogenating C2-C5 alkanes with molecular oxygen in vapor phase, corresponding olefins can be produced at high yield.

    摘要翻译： 本发明提供了在催化剂和分子氧的存在下，通过C2-C5低级烷烃的气相氧化脱氢制备低级烷烃的方法，以产生相应的烯烃，其中催化剂具有由通式（ 1）：其中A是选自钼和铬中的至少一种金属; 锑是锑; W是钨; O是氧; 并且D是选自V，Nb，Ta，Fe，Co，Ni，Cu，Ag，Zn，B，Tl，Sn，Pb，Te，Li，Na，K，Rb，Cs中的至少一种金属 ，Mg，Ca，Sr，Ba，La，Ce和Sm; α，β，γ，δ和x分别表示A，Sb，W，D和O的原子序数，其中α= 1，β= 0.5-10，γ= 0.1-10和δ= 0-3; x是由氧以外的元素的氧化状态确定的数值。当这些催化剂用于在气相中用分子氧氧化和脱氢C2-C5烷烃的反应中时，可以高产率生产相应的烯烃。