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    MONITORING OF THE STOICHIOMETRIC RATIO IN THE REACTION OF NITROAROMATICS WITH HYDROGEN
    1.
    发明申请
    MONITORING OF THE STOICHIOMETRIC RATIO IN THE REACTION OF NITROAROMATICS WITH HYDROGEN 有权
    在氢化反应中监测硝基比例的测定

    公开(公告)号：US20130211141A1

    公开(公告)日：2013-08-15

    申请号：US13759466

    申请日：2013-02-05

    申请人： Andreas RAICHLE ,  Stefanie Haase ,  Holgar Braunsberg ,  Johannes Buettner ,  Ulrich Penzel ,  Samuel Neto

    发明人： Andreas RAICHLE ,  Stefanie Haase ,  Holgar Braunsberg ,  Johannes Buettner ,  Ulrich Penzel ,  Samuel Neto

    IPC分类号： C07C209/36

    CPC分类号： C07C209/36 ,  C07C211/47 ,  C07C211/50

    摘要： The present invention relates to a continuous process for preparing at least one aromatic amine by hydrogenation of at least one nitroaromatic by means of hydrogen, where a liquid phase comprising at least the aromatic amine and a gas phase comprising at least hydrogen are present, in the presence of a catalyst suspended in the liquid phase at a temperature of from 50 to 250° C. and a pressure of from 5 to 50 bar, wherein the pressure in the reactor is kept essentially constant by continuous adaptation of the amount of hydrogen fed to the reactor, the total amount of hydrogen fed to the reactor is monitored and the introduction of the at least one nitroaromatic is interrupted if the hydrogen uptake in the reactor is not at least 50 mol % of the amount of hydrogen required for stoichiometric reaction of the at least one nitroaromatic to form the at least one aromatic amine.

    摘要翻译： 本发明涉及通过氢气至少一种硝基芳族化合物来制备至少一种芳族胺的连续方法，其中至少包含芳族胺的液相和至少包含氢的气相存在于 在50至250℃的温度和5至50巴的压力下悬浮在液相中的催化剂的存在，其中反应器中的压力通过连续适应供给到 监测反应器中进料到反应器中的氢气总量，如果反应器中的氢气吸收量不是化学计量反应所需的氢量的至少50摩尔％，则至少一种硝基芳族化合物的引入被中断 至少一种硝基芳族化合物以形成所述至少一种芳族胺。

    Method for producing toluylenediamine by hydrogenating dinitrotoluene
    4.
    发明授权
    Method for producing toluylenediamine by hydrogenating dinitrotoluene 失效
    通过氢化二硝基甲苯生产甲苯二胺的方法

    公开(公告)号：US08614356B2

    公开(公告)日：2013-12-24

    申请号：US13142718

    申请日：2009-12-21

    申请人： Joana Coelho Tsou ,  Steffen Oehlenschlaeger ,  Ekkehard Schwab ,  Wolfgang Mackenroth ,  Hartwig Voss ,  Stefan Maixner ,  Samuel Neto ,  Sven Boehmeke ,  Frederik Van Laar

    发明人： Joana Coelho Tsou ,  Steffen Oehlenschlaeger ,  Ekkehard Schwab ,  Wolfgang Mackenroth ,  Hartwig Voss ,  Stefan Maixner ,  Samuel Neto ,  Sven Boehmeke ,  Frederik Van Laar

    IPC分类号： C07C209/00 ,  C07C211/00

    CPC分类号： C07C209/36 ,  C07C211/50

    摘要： A process for preparing tolylenediamine by hydrogenating dinitrotoluene with hydrogen in the presence of a suspended catalyst in a vertically upright reactor (1), at the upper end of which is arranged a motive jet nozzle (2) through which the reaction mixture drawn off from the reactor bottom, via an external loop, is sprayed into the upper region of the reactor (1) and then flows into a central inserted tube (4) which is arranged in the longitudinal direction of the reactor, flows through the latter from the top downward and flows upward again outside the inserted tube (4) in an internal loop motion, with a heat exchanger (6) in the interior of the reactor (1), through which cooling water flows, and absorbs some of the heat of reaction as it does so, with a feed for the dinitrotoluene at the upper end of the reactor (1) and a feed for the hydrogen at the lower end of the reactor (1), and wherein, in addition to the heat exchanger (6) arranged in the interior of the reactor (1), a further heat exchanger (W) is used in the external loop, in which water absorbs the rest of the heat of reaction by indirect heat exchange with the reaction mixture, which comprises utilizing the heat of reaction to raise steam with a pressure of at least 4 bar gauge by performing the hydrogenation of dinitrotoluene to tolylenediamine at a temperature of ≧180° C.

    摘要翻译： 一种通过在悬浮催化剂存在下用氢气将二硝基甲苯氢化在垂直直立反应器（1）中来制备甲苯二胺的方法，其上端设置有动力喷嘴（2），反应混合物从其中排出 反应器底部通过外部环路喷射到反应器（1）的上部区域中，然后流入沿着反应器的纵向布置的中心插入管（4），其从顶部向下流动 并且在反应器（1）的内部具有热交换器（6），内部循环运动再次向外流过插入的管（4），冷却水通过该换热器（6）流过，并吸收一些反应热 用反应器（1）上端的二硝基甲苯进料和反应器（1）下端的氢气进料，并且其中除了设置在反应器（1）的下端的热交换器 反应器（1）的内部，一个furt 她的热交换器（W）用于外部回路中，其中水通过与反应混合物的间接热交换吸收剩余的反应热，其中包括利用反应热量以至少4的压力升高蒸汽 通过在> = 180℃的温度下进行二硝基甲苯氢化成甲苯二胺来测定。

    Production of aldehydes, carboxylic acids and/or carboxylic acid anhydrides by means of catalysts containing vanadium oxide, titanium dioxide, and antimony oxide
    7.
    发明申请
    Production of aldehydes, carboxylic acids and/or carboxylic acid anhydrides by means of catalysts containing vanadium oxide, titanium dioxide, and antimony oxide 有权
    通过含有氧化钒，二氧化钛和氧化锑的催化剂生产醛，羧酸和/或羧酸酐

    公开(公告)号：US20070060758A1

    公开(公告)日：2007-03-15

    申请号：US10557791

    申请日：2004-05-21

    申请人： Sebastian Storck ,  Jurgen Zuhlke ,  Samuel Neto ,  Frank Rosowski

    发明人： Sebastian Storck ,  Jurgen Zuhlke ,  Samuel Neto ,  Frank Rosowski

    IPC分类号： C07D307/89

    CPC分类号： C07C51/265 ,  C07C51/313 ,  C07C63/16

    摘要： A description is given of a process for preparing aldehydes, carboxylic acids and/or carboxylic anhydrides, in particular phthalic anhydride, in which a gaseous stream comprising an aromatic hydrocarbon and molecular oxygen is passed at elevated temperature over a bed of a first catalyst and a bed which is made up of a second catalyst having a higher activity than the first catalyst and is located downstream of the first catalyst in the flow direction of the gaseous stream, wherein the catalytically active composition of the first catalyst comprises at least vanadium oxide, titanium dioxide and antimony oxide and the ratio of vanadium, calculated as V2O5, to antimony, calculated as Sb2O3, in the first catalyst is from 3.5:1 to 5:1. The source of antimony oxide used for the first catalyst is preferably particulate antimony trioxide having a mean particle size of from 0.5 to 5 μm. The process allows the desired oxidation products to be obtained in high yield over longer periods of time.

    摘要翻译： 给出了制备醛，羧酸和/或羧酸酐，特别是邻苯二甲酸酐的方法的描述，其中包含芳族烃和分子氧的气流在升高的温度下通过第一催化剂的床和 床，其由比第一催化剂高的活性的第二催化剂组成，并且位于气流的流动方向上位于第一催化剂的下游，其中第一催化剂的催化活性组合物至少包含氧化钒，钛 二氧化锑和氧化锑，以V 2 O 5 5计算的钒与锑的比例计算为Sb 2 O 3 在第一催化剂中为3.5:1至5:1。 用于第一催化剂的氧化锑的来源优选是平均粒径为0.5-5微米的颗粒状三氧化锑。 该方法允许在较长时间内以高产率获得所需的氧化产物。