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    Catalytic gas phase oxidation process
    85.
    发明申请
    Catalytic gas phase oxidation process 有权
    催化气相氧化过程

    公开(公告)号：US20030191343A1

    公开(公告)日：2003-10-09

    申请号：US10387244

    申请日：2003-03-12

    申请人： Nippon Shokubai Co., Ltd.

    发明人： Hiromi Yunoki ,  Michio Tanimoto

    IPC分类号： C07C051/235 ,  C07C051/16

    CPC分类号： C07C45/37 ,  B01J23/002 ,  B01J23/8876 ,  B01J23/8877 ,  B01J23/8885 ,  B01J35/023 ,  B01J37/0009 ,  B01J37/0236 ,  C07C45/32 ,  C07C45/35 ,  C07C51/252 ,  C07C47/22 ,  C07C57/04

    摘要： The object of the present invention is to provide a process in which, when the unsaturated carboxylic acid is produced, or when the unsaturated aldehyde and/or the unsaturated carboxylic acid are produced by carrying out the catalytic gas phase oxidation reaction by using the fixed-bed multitubular reactor which is packed with the molybdenum-containing catalyst, the reaction can be continued for a long time while a high yield is maintained, regardless of where the hot spot portion occurs and also even if the concentration of the raw gas is high. To solve this object, the present invention production process for an unsaturated carboxylic acid is characterized in: a particulate catalysts including, as catalytic components, an oxide and/or a complex oxide including Mo and V, or Mo, Fe and Bi as essential components, and having a hole are used; and a catalyst-packed layer of each reaction tube of the fixed-bed multitubular reactor is divided into at least two reaction zones in a tubular axial direction, wherein the packing of the catalysts is such that the diameters of the holes of the catalysts differ between at least two of the reaction zones.

    摘要翻译： 本发明的目的是提供一种方法，其中当制备不饱和羧酸时，或者当通过使用固定 - 不饱和羧酸进行催化气相氧化反应制备不饱和醛和/或不饱和羧酸时， 用含钼催化剂填充的多层反应器，可以在不损害热点部分的情况下，即使原料气体的浓度高的情况下，可以持续长时间的反应而保持高产率。 为了解决上述问题，本发明的不饱和羧酸的制造方法的特征在于：作为催化剂成分的含有Mo，V，Mo，Fe，Bi的氧化物和/或复合氧化物作为必要成分的粒状催化剂 ，并具有孔; 将固定床多管反应器的每个反应管的催化剂填充层分成管状轴向方向的至少两个反应区，其中催化剂的填料使得催化剂的孔的直径在 至少两个反应区。

    Tubular reactor for carrying out exothermic gas phase reactions
    86.
    发明申请
    Tubular reactor for carrying out exothermic gas phase reactions 审中-公开
    用于进行放热气相反应的管式反应器

    公开(公告)号：US20030175183A1

    公开(公告)日：2003-09-18

    申请号：US10275204

    申请日：2002-11-02

    发明人： Friedrich Guetlhuber

    IPC分类号： B01J008/04

    CPC分类号： B01J8/065 ,  B01J2208/00212 ,  B01J2208/00256 ,  B01J2219/00263 ,  C07C45/35 ,  C07C47/22

    摘要： A tube reactor (2) for performing exothermic gas phase reactions comprising a reaction tube bundle (8), that extends in a sealed manner between two tube end plates (4, 6), that carries a reaction gas and is surrounded by a heat carrier inside a surrounding reactor shell (10). The tube reactor also includes a cowl (18, 20) that spans the respective tube plates (4, 6) and is connected to a gas inlet and a gas discharge line, respectively. Inside the cowl (18) on the gas inlet side adjacent to a first gas supply chamber (28), connected to the inside of the reaction tubes (16), is located a separately fed second gas supply chamber (30) with its own tube end plate (32) that is connected to separate gas supply tubes (34) suitable for a second reaction gas. The separate gas supply tubes reach into the gas inlet end or reach to directly before the gas inlet ends of the reaction tubes (16). This avoids early admixing of an explosion-critical reactant into the reaction gas stream using relatively simple and practical means of construction, which in turn improves the ability to load the reaction gas stream with this reactant.

    摘要翻译： 一种用于进行放热气相反应的管式反应器（2），包括反应管束（8），该反应管束（8）以密封方式在两个管端板（4,6）之间延伸，所述反应管束携带反应气体并被热载体 在周围的反应器壳体（10）内。 管式反应器还包括跨过各个管板（4,6）并连接到气体入口和气体排放管线的整流罩（18,20）。 在连接到反应管（16）内部的与第一气体供应室（28）相邻的气体入口侧的整流罩（18）内，位于具有自己的管的分开供给的第二气体供给室（30） 端板（32），其连接到适合于第二反应气体的分离的气体供应管（34）。 单独的气体供应管到达气体入口端或者直接在反应管（16）的气体入口端之前到达。 这避免了使用相对简单和实用的施工方法将爆炸关键反应物早期混合到反应气流中，这进一步提高了与该反应物一起加载反应气流的能力。