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32. 发明申请

US20110275858A1 METHOD FOR PRODUCING TOLUYLENEDIAMINE BY HYDROGENATING DINITROTOLUENE 失效
标题翻译：通过加氢精氨酸生产戊烯二胺的方法
公开(公告)号：US20110275858A1
公开(公告)日：2011-11-10
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： C07C209/36
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。

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