Process for producing maleic anhydride
    1.
    发明授权
    Process for producing maleic anhydride 失效
    马来酸酐生产工艺

    公开(公告)号:US6093835A

    公开(公告)日:2000-07-25

    申请号:US119723

    申请日:1998-07-21

    CPC分类号: C07C51/215 C07C51/42

    摘要: A process for producing maleic anhydride is described, which comprises (i) reacting a hydrocarbon with oxygen in a vapor phase in the presence of a catalyst to yield a reaction mixture gas containing maleic anhydride, (ii) bringing the reaction mixture gas into contact with an organic solvent to collect the maleic anhydride in the organic solvent, (iii) separating at least part of the maleic anhydride from the organic solvent, (iv) washing with an aqueous alkali solution at least part of the organic solvent from which maleic anhydride has been separated, and (v) reusing the resultant washed organic solvent and the residual organic solvent for contact with the reaction mixture gas.

    摘要翻译: 描述了生产马来酸酐的方法,其包括(i)在催化剂存在下使烃与氧气在气相中反应,得到含有马来酸酐的反应混合物气体,(ii)使反应混合物气体与 在有机溶剂中收集马来酸酐的有机溶剂,(iii)将至少部分马来酸酐与有机溶剂分离,(iv)用碱性水溶液洗涤至少部分马来酸酐具有的有机溶剂 分离,和(v)重复利用所得洗涤的有机溶剂和残留的有机溶剂与反应混合物气体接触。

    Process for the production of maleic anhydride
    2.
    发明授权
    Process for the production of maleic anhydride 有权
    马来酸酐生产工艺

    公开(公告)号:US06458971B1

    公开(公告)日:2002-10-01

    申请号:US09577157

    申请日:2000-05-24

    IPC分类号: C07D30760

    CPC分类号: C07C51/215 C07C57/145

    摘要: Disclosed is a process for the preparation of maleic anhydride which comprises subjecting an aliphatic hydrocarbon having four or more carbon atoms to gas phase oxidation reaction in the presence of a catalyst, wherein supposing that the function of reaction product gas composition is FL and the function of temperature and pressure of reaction product gas is FR, the safety index F satisfies the following relationship (1): F=FL−FR>0  (1) According to the present invention, it is possible that the loss of unreacted hydrocarbon and maleic anhydride as reaction product due to non-catalytic oxidation reaction is prevented while effecting the reaction in a stable manner, whereby the yield of maleic anhydride can be kept maximum while assuring safety.

    摘要翻译: 公开了一种制备马来酸酐的方法,其包括在催化剂存在下使具有四个或更多个碳原子的脂族烃进行气相氧化反应,其中假定反应产物气体组成的函数为FL, 反应产物气体的温度和压力为FR,安全指数F满足以下关系式(1):根据本发明,由于非催化氧化反应,作为反应产物的未反应的烃和马来酸酐的损失可能 在稳定地进行反应的同时被防止,从而马来酸酐的产率可以保持最大,同时确保安全性。

    Catalytic composition
    3.
    发明授权
    Catalytic composition 失效
    催化组成

    公开(公告)号:US4711867A

    公开(公告)日:1987-12-08

    申请号:US833279

    申请日:1986-02-27

    摘要: A catalystic composition suitable for producing acrylonitrile from propylene, ammonia and oxygen (or oxygen-containing gas), which composition is represented by the following formula:(Mo).sub.a (W).sub.b (Bi).sub.c (Pb).sub.d (B).sub.e (Sb).sub.f (X).sub.g (O).sub.h(where: X is chromium or iron; a, b, c, d, e, f, g and h denote respectively number of atoms for molybdenum, tungsten, bismuth, lead, boron, antimony, X and oxygen, and wherein, if it is given that a+b=12, 0.ltoreq.b.ltoreq.7, 0.4.ltoreq.c.ltoreq.7, 2.ltoreq.d.ltoreq.12, 0.2/22.ltoreq.e/a.ltoreq.40/22, 0.ltoreq.f/a.ltoreq.25/22, and 0.ltoreq.g/a.ltoreq.3/22; and h denotes the number of oxygen necessary for satisfying the atomic valence for the individual constituent elements other than oxygen).

    摘要翻译: 适用于由丙烯,氨和氧(或含氧气体)生产丙烯腈的催化剂组合物,该组成由下式表示:(Mo)a(W)b(Bi)c(Pb)d(B)e (Sb)f(X)g(O)h(其中:X是铬或铁; a,b,c,d,e,f,g和h分别表示钼,钨,铋,铅的原子数, 硼,锑,X和氧,并且其中,如果给定a + b = 12,0,b = 7,0.4,c = 7,2, 12,0.2 / 22

    Process for the simultaneous preparation of acrylonitrile and arcylic
acid
    4.
    发明授权
    Process for the simultaneous preparation of acrylonitrile and arcylic acid 失效
    同时制备丙烯腈和甲酸的方法

    公开(公告)号:US6166241A

    公开(公告)日:2000-12-26

    申请号:US284993

    申请日:1999-05-13

    摘要: The present invention relates to a method for the simultaneous production of acrylonitrile and acrylic acid by reacting propane with ammonia and oxygen in the gas phase catalytic oxidation in the presence of a metal oxide catalyst containing vanadium and at least one member selected from tellurium, antimony and molybdenum and adjusting the molar ratio of propane to ammonia to from 2 to 10 and the molar ratio of oxygen to ammonia to from 2 to 10.

    摘要翻译: PCT No.PCT / JP97 / 04169 Sec。 371日期1999年5月13日 102(e)日期1999年5月13日PCT 1997年11月17日PCT公布。 第WO98 / 22421号公报 日期1998年5月28日本发明涉及一种在含有钒的金属氧化物催化剂和选自以下的至少一种成分的情况下,在气相催化氧化中使丙烷与氨和氧反应生成丙烯腈和丙烯酸的方法。 碲,锑和钼,并将丙烷与氨的摩尔比调节至2至10,氧与氨的摩尔比为2至10。

    Method for producing a nitrile
    5.
    发明授权
    Method for producing a nitrile 失效
    制备腈的方法

    公开(公告)号:US5534650A

    公开(公告)日:1996-07-09

    申请号:US372022

    申请日:1995-01-12

    CPC分类号: B01J8/1827 C07C253/24

    摘要: A method for producing a nitrile by a gas phase catalytic oxidation reaction of an alkane with ammonia in the presence of a catalyst, which comprises supplying the alkane and ammonia to an upper stream inlet of the catalyst layer, and separately supplying at least a part of the total amount of ammonia to a downstream position of the catalyst layer located downstream from the upper stream inlet of the catalyst layer.

    摘要翻译: 一种在催化剂存在下通过烷烃与氨的气相催化氧化反应生产腈的方法,其包括将烷烃和氨供应到催化剂层的上游入口,并分别供应至少一部分 催化剂层的下游位置处的氨的总量位于催化剂层的上游入口的下游。