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公开(公告)号：US10125088B2
公开(公告)日：2018-11-13
申请号：US15645055
申请日：2017-07-10
IPC分类号： C07C201/16 , B01J19/24 , B01D11/04 , B01D19/00
摘要： The present invention relates to a method for purifying raw dinitrotoluenes resulting from dinitration of toluene in the presence of a nitric acid/sulfuric acid/nitrating acid mixture, and a device or plant for performing the method, and a corresponding production plant for producing dinitrotoluene, characterized in that (a) the raw dinitrotoluenes are first subjected to a wash with at least one washing medium after separation of the nitrating acid mixture, followed by a separation of the washing medium; and that (b) subsequently the washed dinitrotoluenes resulting from method step (a) are subjected to stripping (stripping gas treatment) with at least one gas (stripping gas).
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公开(公告)号：US10941087B2
公开(公告)日：2021-03-09
申请号：US16483483
申请日：2017-12-14
IPC分类号： C07B43/02 , B01D11/04 , B01J19/00 , B01J19/24 , C07C205/06
摘要： The invention relates to a method for preferably adiabatic nitration of nitratable aromatic organic compounds (aromatics) and to a corresponding plant, in particular a production plant (nitration plant) for carrying out said method.
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公开(公告)号：US09738592B2
公开(公告)日：2017-08-22
申请号：US15323800
申请日：2015-04-30
IPC分类号： C07C201/16 , B01D11/04 , B01D19/00 , B01J19/24 , C07C205/06
CPC分类号： C07C201/16 , B01D11/0488 , B01D19/0005 , B01J19/24 , B01J2219/24 , Y02P20/582 , C07C205/06
摘要： The present invention relates to a method for purifying raw dinitrotoluenes resulting from dinitration of toluene in the presence of a nitric acid/sulfuric acid/nitrating acid mixture, and a device or plant for performing the method, and a corresponding production plant for producing dinitrotoluene, characterized in that (a) the raw dinitrotoluenes are first subjected to a wash with at least one washing medium after separation of the nitrating acid mixture, followed by a separation of the washing medium; and that (b) subsequently the washed dinitrotoluenes resulting from method step (a) are subjected to stripping (stripping gas treatment) with at least one gas (stripping gas).
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公开(公告)号：US10513486B1
公开(公告)日：2019-12-24
申请号：US16540241
申请日：2019-08-14
IPC分类号： C07C201/02 , C07C203/04 , B01J19/18 , B01D11/04
摘要： The invention relates to a method and to a device for removing contaminants arising during the production of aliphatic or alicyclic nitric acid esters, in particular for removing contaminants from nitrated crude nitric acid esters, which nitrated crude nitric acid esters arise during the nitration of monovalent or multivalent aliphatic or alicyclic alcohols capable of nitration, after the separation of the final nitrating acid, and to a production system for nitrating monovalent or multivalent aliphatic alcohols capable of nitration with subsequent purification of the nitrated nitric acid esters.
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公开(公告)号：US10266480B2
公开(公告)日：2019-04-23
申请号：US14912387
申请日：2014-06-25
IPC分类号： B01J19/00 , B01J19/18 , B01D11/04 , C07C201/02 , C07C203/04
摘要： The invention relates to a method and to a device for removing contaminants arising during the production of aliphatic or alicyclic nitric acid esters, in particular for removing contaminants from nitrated crude nitric acid esters, which nitrated crude nitric acid esters arise during the nitration of monovalent or multivalent aliphatic or alicyclic alcohols capable of nitration, after the separation of the final nitrating acid, and to a production system for nitrating monovalent or multivalent aliphatic alcohols capable of nitration with subsequent purification of the nitrated nitric acid esters.
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公开(公告)号：US09540313B2
公开(公告)日：2017-01-10
申请号：US14632086
申请日：2015-02-26
IPC分类号： C07C201/16 , B01J19/24
CPC分类号： C07C201/16 , B01J19/24 , B01J2219/24 , C07C205/06
摘要： The present invention relates to a method for removing impurities from nitrated crude products obtained during the nitration of nitratable aromatic compounds, after removal of the final nitrating acid, by treatment with a washing medium, and also to a plant or apparatus suitable for implementing this method. Further provided by the invention is a production plant for the nitration of nitratable aromatic compounds with subsequent purification of the nitrated products.
摘要翻译： 本发明涉及一种从硝化硝化硝酸中除去硝化酸后，通过用洗涤介质处理而得到的硝化粗产物中除去杂质的方法，以及适用于实施该方法的设备或装置 。 本发明进一步提供了一种用于硝化硝化的芳族化合物的生产设备，随后硝化产物的纯化。
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7.发明申请公开(公告)号：US20190367441A1
公开(公告)日：2019-12-05
申请号：US16540241
申请日：2019-08-14
IPC分类号： C07C201/02 , B01J19/18 , B01D11/04 , C07C203/04
摘要： The invention relates to a method and to a device for removing contaminants arising during the production of aliphatic or alicyclic nitric acid esters, in particular for removing contaminants from nitrated crude nitric acid esters, which nitrated crude nitric acid esters arise during the nitration of monovalent or multivalent aliphatic or alicyclic alcohols capable of nitration, after the separation of the final nitrating acid, and to a production system for nitrating monovalent or multivalent aliphatic alcohols capable of nitration with subsequent purification of the nitrated nitric acid esters.
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8.发明申请公开(公告)号：US20180362442A1
公开(公告)日：2018-12-20
申请号：US15926406
申请日：2018-03-20
IPC分类号： C07C201/02 , C07C203/04 , B01J19/18 , B01D11/04
摘要： The invention relates to a method and to a device for removing contaminants arising during the production of aliphatic or alicyclic nitric acid esters, in particular for removing contaminants from nitrated crude nitric acid esters, which nitrated crude nitric acid esters arise during the nitration of monovalent or multivalent aliphatic or alicyclic alcohols capable of nitration, after the separation of the final nitrating acid, and to a production system for nitrating monovalent or multivalent aliphatic alcohols capable of nitration with subsequent purification of the nitrated nitric acid esters.
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