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    Method for producing toluylenediamine by hydrogenating dinitrotoluene
    82.
    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。

    PROCESS FOR CONTINUOUS HYDROGENATION OR HYDROGENATING AMINATION
    88.
    发明申请
    PROCESS FOR CONTINUOUS HYDROGENATION OR HYDROGENATING AMINATION 失效
    连续加氢或加氢胺化的方法

    公开(公告)号：US20120232267A1

    公开(公告)日：2012-09-13

    申请号：US13423956

    申请日：2012-03-19

    申请人： Bram Willem Hoffer ,  Hartwig Voss ,  Ekkehard Schwab ,  Udo Rheude ,  Gerd Kaibel ,  Mathias Haake ,  Jan Eberhardt ,  Michael Karcher

    发明人： Bram Willem Hoffer ,  Hartwig Voss ,  Ekkehard Schwab ,  Udo Rheude ,  Gerd Kaibel ,  Mathias Haake ,  Jan Eberhardt ,  Michael Karcher

    IPC分类号： C07D265/30 ,  C07C45/62

    CPC分类号： C07C45/62 ,  C07C47/228 ,  C07C49/04 ,  C07C47/02

    摘要： A process continuously hydrogenating unsaturated compounds, in which particles of a first hydrogenation catalyst are suspended in a liquid phase in which an unsaturated compound is dissolved, the liquid phase, in the presence of a hydrogenous gas at a first partial hydrogen pressure and at a first temperature, is conducted through a packed bubble column reactor in cocurrent counter to the direction of gravity, the effluent from the bubble column reactor is sent to a gas-liquid separation, the liquid phase is sent to a crossfiltration to obtain a retentate and a filtrate, the retentate is recycled into the bubble column reactor and the filtrate, in the presence of a hydrogenous gas at a second partial hydrogen pressure and at a second temperature, is passed over a bed of a second hydrogenation catalyst, the second partial hydrogen pressure is at least 10 bar higher than the first partial hydrogen pressure.

    摘要翻译： 将第一氢化催化剂的颗粒悬浮在其中溶解有不饱和化合物的液相中的不饱和化合物的液相，在第一部分氢气压力下的氢气存在下的液相， 温度，通过与泡沫塔反应器并流反向并流并通过气泡塔反应器进行气液分离，将液相送至交叉过滤以获得滞留物和滤液 ，将渗余物再循环到泡罩塔反应器中，并且在第二部分氢气压力和第二温度下在氢气存在下将滤液通过第二氢化催化剂床，第二部分氢气压力为 比第一部分氢气压力高至少10巴。