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160 条记录 (耗时 0.024 秒)

    Catalytic gas phase oxidation reaction
    96.
    发明授权
    Catalytic gas phase oxidation reaction 有权
    催化气相氧化反应

    公开(公告)号：US07161044B2

    公开(公告)日：2007-01-09

    申请号：US10958015

    申请日：2004-10-04

    申请人： Daisuke Nakamura ,  Michio Tanimoto

    发明人： Daisuke Nakamura ,  Michio Tanimoto

    IPC分类号： C07C45/27 ,  C07C51/10 ,  C07C51/14 ,  C07C51/16

    CPC分类号： C07C45/35 ,  C07C45/32 ,  C07C45/37 ,  C07C51/252 ,  C07C47/22 ,  C07C57/04

    摘要： An object of the present invention is to provide a catalytic gas phase oxidation reaction in which: even under reaction conditions of a higher gas pressure, a higher concentration of the raw material gas and a larger space velocity of a reaction gas, the thermal accumulation at the hot spot portion can be sufficiently suppressed with ease and at low costs, so that the reaction can be continued for a long time while a high yield is maintained. As a means of achieving this object, a catalytic gas phase oxidation reaction according to the present invention is a catalytic gas phase oxidation reaction with molecular oxygen or a molecular-oxygen-containing gas by using a fixed-bed multitubular reactor packed with catalysts; with the catalytic gas phase oxidation reaction being characterized in that: a catalyst-packed layer of each reaction tube of the reactor is divided into at least two reaction zones in a tubular axial direction; and the packing of the catalysts is such that the occupation volumes of the catalysts differ between at least two of the reaction zones and that an inert substance molding is mixed in at least one of the reaction zones.

    摘要翻译： 本发明的目的是提供一种催化气相氧化反应，其中即使在较高气体压力，较高浓度的原料气体和较大的反应气体的空间速度的反应条件下，热累积在 可以容易地且低成本地充分地抑制热点部分，使得反应可以长时间持续，同时保持高产率。 作为实现该目的的手段，本发明的催化气相氧化反应是使用填充有催化剂的固定床多管反应器进行与分子氧或含分子氧气体的催化气相氧化反应， 催化气相氧化反应的特征在于：将反应器的每个反应管的催化剂填充层分成至少两个沿管轴方向的反应区; 并且催化剂的填充使得催化剂的占有体积在至少两个反应区之间不同，并且惰性物质模制品在至少一个反应区中混合。

    Catalytic gas phase oxidation process
    97.
    发明授权
    Catalytic gas phase oxidation process 有权

    公开(公告)号：US07045657B2

    公开(公告)日：2006-05-16

    申请号：US10387244

    申请日：2003-03-12

    申请人： Hiromi Yunoki ,  Michio Tanimoto

    发明人： Hiromi Yunoki ,  Michio Tanimoto

    IPC分类号： C07C51/235 ,  C07C51/16

    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.

    Catalyst for synthesis of unsaturated aldehyde, production process for said catalyst, and production process for unsaturated aldehyde using said catalyst
    99.
    发明授权
    Catalyst for synthesis of unsaturated aldehyde, production process for said catalyst, and production process for unsaturated aldehyde using said catalyst 有权
    用于合成不饱和醛的催化剂，所述催化剂的制备方法和使用所述催化剂的不饱和醛的制备方法

    公开(公告)号：US07005542B2

    公开(公告)日：2006-02-28

    申请号：US10358796

    申请日：2003-02-05

    申请人： Hiromi Yunoki

    发明人： Hiromi Yunoki

    IPC分类号： C07C51/16

    CPC分类号： C07C45/37 ,  B01J23/002 ,  B01J23/8876 ,  B01J23/8885 ,  B01J35/0026 ,  B01J37/0009 ,  B01J37/0236 ,  B01J2523/00 ,  C07C45/32 ,  C07C45/35 ,  C07C51/252 ,  C07C47/22 ,  C07C57/04 ,  B01J2523/15 ,  B01J2523/41 ,  B01J2523/54 ,  B01J2523/68 ,  B01J2523/69 ,  B01J2523/842 ,  B01J2523/845 ,  B01J2523/13 ,  B01J2523/847

    摘要： The present invention provides: a production process for a catalyst for synthesis of an unsaturated aldehyde and/or an unsaturated carboxylic acid, which production process is suitable for producing the catalyst with good reproducibility, wherein the catalyst is excellent in activity, selectivity, and physical strength; this catalyst; and a production process for the unsaturated aldehyde and/or the unsaturated carboxylic acid by using this catalyst. The production process for the catalyst comprises the steps of: carrying out heat treatment of an aqueous solution or slurry of a starting material to thus prepare a catalyst precursor P1, wherein the starting material includes molybdenum, bismuth, and iron as essential components; thereafter adding and mixing a binder into the P1 to thus prepare a catalyst precursor P2; and molding and then calcining the P2, thereby producing the catalyst for synthesis of the unsaturated aldehyde and/or the unsaturated carboxylic acid; with the production process being characterized by involving an ignition loss ratio of the catalyst precursor P1 in the range of 10 to 40 mass % (excluding 40 mass %).

    摘要翻译： 本发明提供了一种用于合成不饱和醛和/或不饱和羧酸的催化剂的制备方法，该方法适用于制备具有良好重复性的催化剂，其中催化剂具有优异的活性，选择性和物理性质 强度; 该催化剂; 以及使用该催化剂的不饱和醛和/或不饱和羧酸的制备方法。 催化剂的制备方法包括以下步骤：对原料的水溶液或浆料进行热处理，从而制备催化剂前体P 1，其中原料包括钼，铋和铁作为必要成分; 然后将粘合剂加入并混合到P 1中，从而制备催化剂前体P 2; 然后成型，然后煅烧P 2，从而制备不饱和醛和/或不饱和羧酸的合成催化剂; 其生产方法的特征在于催化剂前体P 1的灼烧损失比在10〜40质量％（不包括40质量％）的范围内。