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25 条记录 (耗时 0.012 秒)

    Process for the production of dinitrotoluene
    2.
    发明申请
    Process for the production of dinitrotoluene 失效
    生产二硝基甲苯的方法

    公开(公告)号：US20080086017A1

    公开(公告)日：2008-04-10

    申请号：US11827502

    申请日：2007-07-12

    申请人： Fritz Pohl ,  Wolfgang Lorenz ,  Juergen Muennig ,  Bernd Pennemann ,  Gerhard Wiechers

    发明人： Fritz Pohl ,  Wolfgang Lorenz ,  Juergen Muennig ,  Bernd Pennemann ,  Gerhard Wiechers

    IPC分类号： C07C211/00

    CPC分类号： C07C201/08 ,  C07C205/06

    摘要： Dinitrotoluene is produced by nitration of toluene with nitrating acid (mixture of nitric acid and sulfuric acid) in which, in a first stage, the toluene is converted to mononitrotoluene (MNT) and then the mononitrotoluene is converted in a second stage to dinitrotoluene (DNT). Control of the weight ratio of the aqueous to organic phases, dispersion of the organic phase in the aqueous phase and use of less than 2.06 moles of nitric acid per mole of toluene are key features of this process.

    摘要翻译： 二硝基甲苯通过用硝酸（硝酸和硫酸的混合物）硝化甲苯来制备，其中在第一阶段将甲苯转化为一硝基甲苯（MNT），然后将一硝基甲苯转化为二硝基甲苯（DNT ）。 控制水相与有机相的重量比，有机相在水相中的分散和每摩尔甲苯使用小于2.06摩尔硝酸是该方法的关键特征。

    Process for the preparation of toluenediamine
    3.
    发明申请
    Process for the preparation of toluenediamine 有权

    公开(公告)号：US20070015940A1

    公开(公告)日：2007-01-18

    申请号：US11482404

    申请日：2006-07-07

    申请人： Bernd Pennemann ,  Bill Brady ,  Rainer Buse ,  Gerd Greger

    发明人： Bernd Pennemann ,  Bill Brady ,  Rainer Buse ,  Gerd Greger

    IPC分类号： C07C209/36

    CPC分类号： C07C209/36

    摘要： Toluenediamine is produced and separated from by-products of the reaction by: a) hydrogenating dinitrotoluene in the presence of a catalyst, b) separating the catalyst, water and optionally solvent from the hydrogenation reaction mixture to give crude toluenediamine, and c) separating by distillation the crude toluenediamine in a separating wall column into at least four product streams P1, P2, P3 and P4. The product stream P1 is a stream containing low boilers. The product stream P2 is a stream containing o-toluenediamine. The product stream P3 is a stream containing m-toluenediamine. The product stream P4 is a stream containing high boilers and m-toluenediamine.

    Method for producing aromatic amines in the liquid phase
    5.
    发明授权
    Method for producing aromatic amines in the liquid phase 有权
    在液相中生产芳香胺的方法

    公开(公告)号：US09150493B2

    公开(公告)日：2015-10-06

    申请号：US13521523

    申请日：2011-01-10

    申请人： Wolfgang Lorenz ,  Bernd Pennemann

    发明人： Wolfgang Lorenz ,  Bernd Pennemann

    IPC分类号： C07C211/00 ,  C07C209/36

    CPC分类号： C07C209/36 ,  C07C211/51

    摘要： The invention relates to a process for the preparation of aromatic amines in the liquid phase by catalytic hydrogenation of the corresponding nitroaromatic compounds in at least two reaction spaces connected in series, wherein at least one reaction space is operated isothermally and at least the reaction space connected downstream thereof is operated adiabatically, and in preferred embodiments the sudden adiabatic temperature change is used for monitoring the reaction.

    摘要翻译： 本发明涉及通过在至少两个串联连接的反应空间中对相应的硝基芳族化合物进行催化氢化在液相中制备芳族胺的方法，其中至少一个反应空间是等温运行的，并且至少连接的反应空间 其下游绝热操作，在优选的实施方案中，突然的绝热温度变化用于监测反应。

    Process for the preparation of toluenediamine
    7.
    发明授权
    Process for the preparation of toluenediamine 有权
    制备甲苯二胺的方法

    公开(公告)号：US07307190B2

    公开(公告)日：2007-12-11

    申请号：US11482404

    申请日：2006-07-07

    申请人： Bernd Pennemann ,  Bill Brady ,  Rainer Buse ,  Gerd Greger

    发明人： Bernd Pennemann ,  Bill Brady ,  Rainer Buse ,  Gerd Greger

    IPC分类号： C07C209/00 ,  C07C249/00

    CPC分类号： C07C209/36

    摘要： Toluenediamine is produced and separated from by-products of the reaction by: a) hydrogenating dinitrotoluene in the presence of a catalyst, b) separating the catalyst, water and optionally solvent from the hydrogenation reaction mixture to give crude toluenediamine, and c) separating by distillation the crude toluenediamine in a separating wall column into at least four product streams P1, P2, P3 and P4. The product stream P1 is a stream containing low boilers. The product stream P2 is a stream containing o-toluenediamine. The product stream P3 is a stream containing m-toluenediamine. The product stream P4 is a stream containing high boilers and m-toluenediamine.

    摘要翻译： 制备甲苯二胺并通过以下方式与反应的副产物分离：a）在催化剂存在下氢化二硝基甲苯，b）从氢化反应混合物中分离催化剂，水和任选的溶剂，得到粗甲苯二胺，和c）通过 将分离壁塔中的粗甲苯二胺蒸馏成至少四种产物流P 1，P 2，P 3和P 4。 产物流P 1是含有低锅炉的物流。 产物流P 2是含有邻甲苯二胺的物流。 产物流P 3是含有间甲苯二胺的物流。 产物流P 4是含有高锅炉和间甲苯二胺的物流。

    Process for the production of dinitrotoluene
    8.
    发明授权
    Process for the production of dinitrotoluene 有权
    生产二硝基甲苯的方法

    公开(公告)号：US07041858B1

    公开(公告)日：2006-05-09

    申请号：US11054012

    申请日：2005-02-09

    申请人： Juergen Muennig ,  Bernd Pennemann ,  Dietmar Wastian ,  Volker Michele ,  Jesse Caravaggio ,  John F. Gisch, Jr.

    发明人： Juergen Muennig ,  Bernd Pennemann ,  Dietmar Wastian ,  Volker Michele ,  Jesse Caravaggio ,  John F. Gisch, Jr.

    IPC分类号： C07C205/00

    CPC分类号： C07C201/08 ,  C07C205/06

    摘要： The present invention is directed to a process for the isothermal nitration of aromatic organic compounds, wherein an aromatic organic compound is brought into contact and reacted with a mixture of sulfuric acid and nitric acid. The mixture of sulfuric acid and nitric acid, and the aromatic organic compound are brought into contact with each other through a mixing nozzle which comprises a substantially cylindrical tubular reactor and an annular gap which surrounds the tubular reactor. The aromatic organic compound flows through the tubular reactor, and the mixture of sulfuric acid and nitric acid flows through the annular gap, and they are mixed together upon emerging from the tubular reactor and the annular gap, wherein the ratio of the average rates of flow of the aromatic organic compound in the tubular reactor, and of the mixture of sulphuric acid and nitric acid in the annular gap ranges from 0.5:1 to 10:1.

    摘要翻译： 本发明涉及芳族有机化合物的等温硝化方法，其中使芳族有机化合物与硫酸和硝酸的混合物接触并反应。 硫酸和硝酸的混合物和芳香族有机化合物通过混合喷嘴相互接触，所述混合喷嘴包括基本上圆柱形的管式反应器和围绕管状反应器的环形间隙。 芳族有机化合物流过管状反应器，硫酸和硝酸的混合物流过环形间隙，并且在从管式反应器和环形间隙出现时将它们混合在一起，其中平均流速 的管状反应器中的芳族有机化合物，以及环状间隙中的硫酸和硝酸的混合物的范围为0.5:1至10:1。

    Process for the continuous preparation of nitrobenzene
    9.
    发明授权
    Process for the continuous preparation of nitrobenzene 有权
    连续制备硝基苯的方法

    公开(公告)号：US08357827B2

    公开(公告)日：2013-01-22

    申请号：US13019350

    申请日：2011-02-02

    申请人： Jurgen Munnig ,  Bernd Pennemann ,  Andreas Karl Rausch

    发明人： Jurgen Munnig ,  Bernd Pennemann ,  Andreas Karl Rausch

    IPC分类号： C07C205/00

    CPC分类号： C07C201/08 ,  C07C205/06

    摘要： Nitrobenzene is continuously produced by nitration of benzene with mixed acid under adiabatic conditions. In this process, the pressure upstream of the nitration reactor is from 14 bar to 40 bar above the pressure in the gas phase of the phase separation apparatus used to separate crude nitrobenzene and waste acid.

    摘要翻译： 通过在绝热条件下用混合酸硝化苯来连续生产硝基苯。 在该过程中，硝化反应器上游的压力比用于分离粗硝基苯和废酸的相分离装置的气相压力高14巴至40巴。

    METHOD FOR PRODUCING AROMATIC AMINES IN THE LIQUID PHASE
    10.
    发明申请
    METHOD FOR PRODUCING AROMATIC AMINES IN THE LIQUID PHASE 有权
    在液相中生产芳族氨基酸的方法

    公开(公告)号：US20120289745A1

    公开(公告)日：2012-11-15

    申请号：US13521523

    申请日：2011-01-10

    申请人： Wolfgang Lorenz ,  Bernd Pennemann

    发明人： Wolfgang Lorenz ,  Bernd Pennemann

    IPC分类号： C07C209/00

    CPC分类号： C07C209/36 ,  C07C211/51

    摘要： The invention relates to a process for the preparation of aromatic amines in the liquid phase by catalytic hydrogenation of the corresponding nitroaromatic compounds in at least two reaction spaces connected in series, wherein at least one reaction space is operated isothermally and at least the reaction space connected downstream thereof is operated adiabatically, and in preferred embodiments the sudden adiabatic temperature change is used for monitoring the reaction.

    摘要翻译： 本发明涉及通过在至少两个串联连接的反应空间中对相应的硝基芳族化合物进行催化氢化在液相中制备芳族胺的方法，其中至少一个反应空间是等温运行的，并且至少连接的反应空间 其下游绝热操作，在优选的实施方案中，突然的绝热温度变化用于监测反应。