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。

公开(公告)号：US08772535B2

公开(公告)日：2014-07-08

申请号：US13442401

申请日：2012-04-09

申请人： Ralf Boehling ,  Sven Kueber ,  Stefan Maixner ,  Eckhard Stroefer ,  Jochem Henkelmann ,  Georg Krug ,  Werner Bolz

发明人： Ralf Boehling ,  Sven Kueber ,  Stefan Maixner ,  Eckhard Stroefer ,  Jochem Henkelmann ,  Georg Krug ,  Werner Bolz

IPC分类号： C07C263/00

CPC分类号： C07C263/10 ,  B01J2219/00038 ,  B01J2219/00869 ,  C07C2601/14 ,  C07C265/14

摘要： Process for preparing isocyanates by phosgenation of amines, wherein phosgene and amine are brought into contact in at least 2 mixing chambers connected in parallel.

摘要翻译： 通过胺的光气化制备异氰酸酯的方法，其中光气和胺在至少两个并联连接的混合室中接触。

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。

公开(公告)号：US20110251425A1

公开(公告)日：2011-10-13

申请号：US13057869

申请日：2009-08-06

申请人： Ulrich Penzel ,  Torsten Mattke ,  Andreas Wolfert ,  Johannes Jocobs ,  Tsung-Chieh Cheng ,  Kerstin Heinen ,  Eckhard Stroefer ,  Stefan Maixner ,  Wolfgang Mackenroth ,  Christian Tragut ,  Kai Thiele ,  Myung Un Won

发明人： Ulrich Penzel ,  Torsten Mattke ,  Andreas Wolfert ,  Johannes Jocobs ,  Tsung-Chieh Cheng ,  Kerstin Heinen ,  Eckhard Stroefer ,  Stefan Maixner ,  Wolfgang Mackenroth ,  Christian Tragut ,  Kai Thiele ,  Myung Un Won

IPC分类号： C07C263/10 ,  B01J19/00

CPC分类号： C07C263/10 ,  C07C265/14

摘要： The invention relates to a process for preparing isocyanates by reacting the corresponding amines with phosgene in the liquid phase, if appropriate in the presence of at least one inert medium, in which the amine and the phosgene are first mixed in a mixing chamber (1) to give a reaction mixture and the reaction mixture is fed to a reactor, the amine being added through an orifice (3) arranged coaxially to the mixing chamber (1) and the phosgene being added through feed orifices (5) in at least two planes (7, 9) arranged at right angles to the axis (11) of the mixing chamber (1), or the phosgene being added through the orifice (3) arranged coaxially to the mixing chamber and the amine through the feed orifices (5) in at least two planes (7, 9) arranged at right angles to the axis (11) of the mixing chamber (1). At least one plane (9) is arranged upstream and at least one plane (7) downstream of the orifice (3) arranged coaxially to the mixing chamber (1) in main flow direction of the reaction mixture. The mean residence time of the reaction mixture in the mixing chamber (1) is not more than 20 ms.

摘要翻译： 本发明涉及通过使相应的胺与液相中的光气反应制备异氰酸酯的方法，如果合适的话，在至少一种惰性介质存在下，其中胺和光气首先在混合室（1）中混合， 得到反应混合物并将反应混合物加入到反应器中，通过与混合室（1）同轴布置的孔口（3）加入胺，并且通过进料孔（5）在至少两个平面中添加光气 （7,9），其与所述混合室（1）的轴线（11）成直角排列，或者通过所述孔（3）加入的光气通过所述孔（3）同轴地配置到所述混合室，所述胺通过所述进料孔（5） 在与所述混合室（1）的轴线（11）成直角布置的至少两个平面（7,9）中。 至少一个平面（9）布置在上游，并且孔（3）下游的至少一个平面（7）在反应混合物的主流动方向上与混合室（1）同轴布置。 反应混合物在混合室（1）中的平均停留时间不超过20ms。