公开(公告)号：US06984762B2

公开(公告)日：2006-01-10

申请号：US10780266

申请日：2004-02-17

申请人： Erwin Dieterich ,  Anke Hielscher ,  Berthold Keggenhoff ,  Manfred Keller-Killewald ,  Jürgen Münnig ,  Dietmar Wastian

发明人： Erwin Dieterich ,  Anke Hielscher ,  Berthold Keggenhoff ,  Manfred Keller-Killewald ,  Jürgen Münnig ,  Dietmar Wastian

IPC分类号： C07C205/00

CPC分类号： C07C201/16 ,  C07C201/08 ,  C07C205/06

摘要： The invention relates to a process for the production of dinitrotoluene by the two-stage nitration of toluene. In the first stage of this process, toluene was reacted adiabatically with nitrating acid so that at least 90% of the toluene was reacted off and no more than 70% of the toluene formed dinitrotoluene. The resulting organic phase containing mononitrotoluene and the aqueous acid phase containing sulfuric acid were separated, and the aqueous acid phase containing sulfuric acid was concentrated by flash evaporation. The resulting concentrated sulfuric acid was recycled into the reaction in the first stage, and/or into the reaction in the second stage, and/or into the concentration in the second stage.In the second stage, the organic phase containing mononitrotoluene from the first stage was completely reacted isothermally with nitrating acid. The organic phase and the aqueous acid phase containing sulfuric acid were then separated, and the aqueous acid phase containing sulfuric acid was concentrated by vacuum evaporation. The resulting concentrated sulfuric acid was recycled into the reaction in the first stage and/or the second stage.

摘要翻译： 本发明涉及通过甲苯二段硝化生产二硝基甲苯的方法。 在该方法的第一阶段，将甲苯与硝酸进行绝热反应，使得甲苯的至少90％反应，并且不超过70％的甲苯形成二硝基甲苯。 分离含有单硝基甲苯和含硫酸水相的所得有机相，通过闪蒸浓缩含硫酸水相。 将所得浓硫酸在第一阶段循环进入反应，和/或在第二阶段进入反应，和/或在第二阶段中浓缩。 在第二阶段，含有来自第一阶段的一硝基甲苯的有机相与硝酸一起等温共同反应。 然后分离含有硫酸的有机相和含水酸相，真空蒸发浓缩含硫酸的酸水溶液。 所得浓硫酸在第一阶段和/或第二阶段循环进入反应。

公开(公告)号：US20090175121A1

公开(公告)日：2009-07-09

申请号：US12316716

申请日：2008-12-16

申请人： Andreas Rausch ,  Christian Steffens ,  Dietmar Wastian ,  Manfred Keller-Killewald ,  Matthias Bohm ,  Joachim Ritter ,  Marcus Grunewald

发明人： Andreas Rausch ,  Christian Steffens ,  Dietmar Wastian ,  Manfred Keller-Killewald ,  Matthias Bohm ,  Joachim Ritter ,  Marcus Grunewald

IPC分类号： B01F13/00 ,  B01F15/04 ,  C07C263/10

CPC分类号： B01J19/1806 ,  B01F7/00766 ,  B01F13/1013 ,  B01F13/1016 ,  B01J2219/182 ,  C07C263/10 ,  C07C265/14

摘要： The invention relates to a mixer reactor of the rotor-stator type. This mixer reactor comprises a substantially rotationally symmetric housing which has a distributing chamber, a mixing chamber, a front plate that modifies the cross-section of the housing between these two chambers, and there are separate inlets into the mixing chamber for at least two substances and an outlet for removing the mixed material or product. The inlet for the first substance is provided in the axis of rotation of the mixing chamber. Two or more channels are aligned radially outward from this inlet, and the first substance is transported through these channels and into the mixing chamber. The inlet for the at least second substance is constructed in the form of a plurality of openings in the front plate, these inlet openings being are arranged rotationally symmetrically to the axis of rotation. Each of these inlet openings for the at least second substance has a corresponding pin which can be displaced in the axial direction.

摘要翻译： 本发明涉及转子 - 定子类型的混合器反应器。 该混合器反应器包括基本上旋转对称的壳体，其具有分配室，混合室，改变壳体在这两个室之间的横截面的前板，并且在混合室中有独立的入口用于至少两种物质 以及用于除去混合材料或产品的出口。 第一物质的入口设置在混合室的旋转轴线中。 两个或更多个通道从该入口径向向外对准，并且第一物质被输送通过这些通道并进入混合室。 用于至少第二物质的入口以前板中的多个开口的形式构造，这些入口开口相对于旋转轴线旋转对称地布置。 用于至少第二物质的这些入口中的每一个具有可在轴向方向上移位的相应销。

公开(公告)号：US08079752B2

公开(公告)日：2011-12-20

申请号：US12316716

申请日：2008-12-16

申请人： Andreas Rausch ,  Christian Steffens ,  Dietmar Wastian ,  Manfred Keller-Killewald ,  Matthias Böhm ,  Joachim Ritter ,  Marcus Grünewald

发明人： Andreas Rausch ,  Christian Steffens ,  Dietmar Wastian ,  Manfred Keller-Killewald ,  Matthias Böhm ,  Joachim Ritter ,  Marcus Grünewald

IPC分类号： B01F7/10

CPC分类号： B01J19/1806 ,  B01F7/00766 ,  B01F13/1013 ,  B01F13/1016 ,  B01J2219/182 ,  C07C263/10 ,  C07C265/14

摘要： The invention relates to a mixer reactor of the rotor-stator type. This mixer reactor comprises a substantially rotationally symmetric housing which has a distributing chamber, a mixing chamber, a front plate that modifies the cross-section of the housing between these two chambers, and there are separate inlets into the mixing chamber for at least two substances and an outlet for removing the mixed material or product. The inlet for the first substance is provided in the axis of rotation of the mixing chamber. Two or more channels are aligned radially outward from this inlet, and the first substance is transported through these channels and into the mixing chamber. The inlet for the at least second substance is constructed in the form of a plurality of openings in the front plate, these inlet openings being are arranged rotationally symmetrically to the axis of rotation. Each of these inlet openings for the at least second substance has a corresponding pin which can be displaced in the axial direction.

摘要翻译： 本发明涉及转子 - 定子类型的混合器反应器。 该混合器反应器包括基本上旋转对称的壳体，其具有分配室，混合室，改变壳体在这两个室之间的横截面的前板，并且在混合室中有独立的入口用于至少两种物质 以及用于除去混合材料或产品的出口。 第一物质的入口设置在混合室的旋转轴线中。 两个或更多个通道从该入口径向向外对准，并且第一物质被输送通过这些通道并进入混合室。 用于至少第二物质的入口以前板中的多个开口的形式构造，这些入口开口相对于旋转轴线旋转对称地布置。 用于至少第二物质的这些入口中的每一个具有可在轴向方向上移位的相应销。