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1. 发明授权

US07041858B1 Process for the production of dinitrotoluene 有权
标题翻译：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。

2. 发明授权

US07495136B2 Process for the production of dinitrotoluene 失效
标题翻译：生产二硝基甲苯的方法
公开(公告)号：US07495136B2
公开(公告)日：2009-02-24
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： C07C205/00
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。

3. 发明申请

US20080086017A1 Process for the production of dinitrotoluene 失效
标题翻译：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。

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