公开(公告)号：US09139509B2

公开(公告)日：2015-09-22

申请号：US13636478

申请日：2011-02-17

申请人： Alfred A. Guenkel ,  Sergio Berretta

发明人： Alfred A. Guenkel ,  Sergio Berretta

IPC分类号： C07C205/00 ,  C07B41/00 ,  C07C201/16

CPC分类号： C07C201/16 ,  Y02P20/582 ,  C07C205/06 ,  C07C205/12

摘要： A method and apparatus for removing non-aromatic impurities from non-nitrated aromatic reactant in a nitration production process, in which process an aromatic reactant is nitrated (100) to produce a nitrated aromatic product using a molar excess of the aromatic reactant, and non-nitrated aromatic reactant is recovered (102) from the produced nitrated aromatic product and is recycled (104) for use in the nitration production process. A portion of the removed excess non-nitrated aromatic reactant is diverted (106) and subjected to nitration (108). The nitrated stream may be further processed by separating out the spent acids (110) and the non-aromatic impurities (116). These streams may be sent (114, 118) to a suitable location in the nitration production train.

摘要翻译： 一种用于在硝化生产过程中从非硝化芳族反应物除去非芳族杂质的方法和装置，其中芳族反应物被硝化（100）以产生使用摩尔过量的芳族反应物的硝化芳族产物， 硝酸芳香族反应物（102）从所生产的硝化芳香族产物中回收（102）并循环使用（104），用于硝化生产过程。 去除的过量非硝化芳族反应物的一部分被转移（106）并进行硝化（108）。 可以通过分离废酸（110）和非芳族杂质（116）来进一步处理硝化物流。 这些流可以被发送（114,118）到硝化生产列车中的合适位置。

公开(公告)号：US20130018210A1

公开(公告)日：2013-01-17

申请号：US13636478

申请日：2011-02-17

申请人： Alfred A. Guenkel ,  Sergio Berretta

发明人： Alfred A. Guenkel ,  Sergio Berretta

IPC分类号： C07C201/08 ,  B01J19/00

CPC分类号： C07C201/16 ,  Y02P20/582 ,  C07C205/06 ,  C07C205/12

摘要： A method and apparatus for removing non-aromatic impurities from non-nitrated aromatic reactant in a nitration production process, in which process an aromatic reactant is nitrated (100) to produce a nitrated aromatic product using a molar excess of the aromatic reactant, and non-nitrated aromatic reactant is recovered (102) from the produced nitrated aromatic product and is recycled (104) for use in the nitration production process. A portion of the removed excess non-nitrated aromatic reactant is diverted (106) and subjected to nitration (108). The nitrated stream may be further processed by separating out the spent acids (110) and the non-aromatic impurities (116). These streams may be sent (114, 118) to a suitable location in the nitration production train.

摘要翻译： 一种用于在硝化生产过程中从非硝化芳族反应物除去非芳族杂质的方法和装置，其中芳族反应物被硝化（100）以产生使用摩尔过量的芳族反应物的硝化芳族产物， 硝酸芳香族反应物（102）从所生产的硝化芳香族产物中回收（102）并循环使用（104），用于硝化生产过程。 去除的过量非硝化芳族反应物的一部分被转移（106）并进行硝化（108）。 可以通过分离废酸（110）和非芳族杂质（116）来进一步处理硝化物流。 这些流可以被发送（114,118）到硝化生产列车中的合适位置。

公开(公告)号：US08692035B2

公开(公告)日：2014-04-08

申请号：US13128595

申请日：2008-11-10

申请人： Sergio Berretta

发明人： Sergio Berretta

IPC分类号： C07C205/00

CPC分类号： C07C201/08 ,  C07C205/06

摘要： An adiabatic process for making mononitrobenzene by the nitration of benzene which minimizes the formation of nitrophenols and dinitrobenzene by-products. The process uses a mixed acid having less than 3 wt % nitric acid, 55 to 80 wt % sulfuric acid, and water. The initial temperature of the mixed acid is in the range of 60 to 96° C. The nitration reaction is complete in about 300 seconds and produces less than 1,200 ppm nitrophenols and less than about 80 ppm dinitrobenzene. The reaction can be carried out in a plug-flow or a stirred pot reactor, or a combination of such reactors.

摘要翻译： 通过硝化苯制备单硝基苯的绝热方法，其使硝基酚和二硝基苯副产物的形成最小化。 该方法使用具有小于3重量％硝酸，55至80重量％硫酸和水的混合酸。 混合酸的初始温度在60至96℃的范围内。硝化反应在约300秒内完成，产生少于1200ppm的硝基苯酚和小于约80ppm的二硝基苯。 反应可以在活塞流或搅拌罐反应器中或这些反应器的组合中进行。

公开(公告)号：US20110245547A1

公开(公告)日：2011-10-06

申请号：US13128595

申请日：2008-11-10

申请人： Sergio Berretta

发明人： Sergio Berretta

IPC分类号： C07C205/06

CPC分类号： C07C201/08 ,  C07C205/06

摘要： An adiabatic process for making mononitrobenzene by the nitration of benzene which minimizes the formation of nitrophenols and dinitrobenzene by-products. The process uses a mixed acid having less than 3 wt % nitric acid, 55 to 80 wt % sulfuric acid, and water. The initial temperature of the mixed acid is in the range of 60 to 96° C. The nitration reaction is complete in about 300 seconds and produces less than 1,200 ppm nitrophenols and less than about 80 ppm dinitrobenzene. The reaction can be carried out in a plug-flow or a stirred pot reactor, or a combination of such reactors.

摘要翻译： 通过硝化苯制备单硝基苯的绝热方法，其使硝基酚和二硝基苯副产物的形成最小化。 该方法使用具有小于3重量％硝酸，55至80重量％硫酸和水的混合酸。 混合酸的初始温度在60至96℃的范围内。硝化反应在约300秒内完成，产生少于1200ppm的硝基苯酚和小于约80ppm的二硝基苯。 反应可以在活塞流或搅拌罐反应器中或这些反应器的组合中进行。

公开(公告)号：US08604256B2

公开(公告)日：2013-12-10

申请号：US13129023

申请日：2008-11-14

申请人： Sergio Berretta ,  David A. Boyd

发明人： Sergio Berretta ,  David A. Boyd

IPC分类号： C07C205/00

CPC分类号： C07C201/08 ,  B01J2219/00006 ,  C07C205/06

摘要： A method for making mononitrobenzene using a plug flow reactor train. Benzene, nitric acid and sulfuric acid are introduced into the reactor and produced mononitrobenzene is removed at an outlet end. All of the benzene and at least part of the sulfuric acid are introduced at the inlet end of the reactor. A first portion of the nitric acid is introduced by a first nitric acid feed into the inlet end and a second portion of the nitric acid is introduced at one or more additional feeds that are spaced between the inlet end and the outlet end. The method results in reduced formation of by-product dinitrobenzene, improving the reaction yield of mononitrobenzene while avoiding the need for a distillation step.

摘要翻译： 使用活塞流反应器列车制备单硝基苯的方法。 将苯，硝酸和硫酸引入反应器中，并在出口端除去产生的单硝基苯。 所有的苯和至少一部分硫酸在反应器的入口端引入。 硝酸的第一部分通过第一硝酸进料引入入口端，并且硝酸的第二部分被引入在入口端和出口端之间间隔开的一个或多个另外的进料处。 该方法导致副产物二硝基苯的形成减少，提高了单硝基苯的反应产率，同时避免了蒸馏步骤的需要。

公开(公告)号：US20120020866A1

公开(公告)日：2012-01-26

申请号：US13262200

申请日：2010-03-06

申请人： Clive Brereton ,  Sergio Berretta

发明人： Clive Brereton ,  Sergio Berretta

IPC分类号： C01B21/02 ,  B01J19/00

CPC分类号： C01B7/075 ,  C01B21/0832

摘要： A method of processing a stream of liquid chlorine containing nitrogen trichloride from a chloralkali plant. The liquid stream is received into a vaporizer in which it is evaporated 1O1 chlorine gas and nitrogen trichloride gas. The gas stream is processed by destroying the nitrogen trichloride gas, for example in a superheater or a catalytic bed. The processed gas stream is recycled to the chlorine production train of the chloralkali plant. The process avoids the use of organic solvents to decompose the nitrogen trichloride and the creation of a waste stream requiring further handling.

摘要翻译： 一种从氯碱植物处理含有三氯化氯的液氯流的方法。 将液体流接收到蒸发器中，在其中蒸发1氯气和三氯化氮气体。 通过破坏三氯化氮气体，例如在过热器或催化床中处理气流。 经处理的气流再循环到氯碱厂的氯生产线。 该方法避免使用有机溶剂分解三氯化氮和产生需要进一步处理的废物流。

公开(公告)号：US20120017848A1

公开(公告)日：2012-01-26

申请号：US13262151

申请日：2010-03-06

申请人： Clive Brereton ,  Sergio Berretta

发明人： Clive Brereton ,  Sergio Berretta

IPC分类号： F22B33/00 ,  B01J19/00 ,  B01D53/68 ,  B01D1/00

CPC分类号： C01B7/075

摘要： A method of safely vaporizing liquid chlorine containing high concentrations of nitrogen trichloride contaminant from a chloralkali plant. In a vertical plug-flow vaporizer having an upward flow direction, a stream of liquid chlorine containing nitrogen trichloride is received. A gas such as air, nitrogen or chlorine gas is introduced into the liquid stream upstream of the boiling zone of the vaporizer to induce a flow regime, for example annular flow or mist flow, that prevents a mass accumulation of nitrogen trichloride in the vaporizer. The liquid chlorine containing nitrogen trichloride is vaporized. The resulting gas stream may be processed to destroy the nitrogen trichloride and recycled to the chlorine production train.

摘要翻译： 一种从氯碱植物中安全蒸发含有高浓度三氯化氮污染物的液态氯的方法。 在具有向上流动方向的立式活塞式蒸发器中，容纳含有三氯化氮的液氯流。 将诸如空气，氮气或氯气的气体引入蒸发器的沸腾区域上游的液体流中以引起流动状态，例如环流或雾流，其防止气化器中的三氯化碳的质量堆积。 含有三氯化碳的液态气体被蒸发。 所得到的气流可以被处理以破坏三氯化氮并再循环到氯生产列车。

公开(公告)号：US10377629B2

公开(公告)日：2019-08-13

申请号：US13262151

申请日：2010-03-06

申请人： Clive Brereton ,  Sergio Berretta

发明人： Clive Brereton ,  Sergio Berretta

IPC分类号： F22B33/00 ,  C01B7/075

摘要： A method of safely vaporizing liquid chlorine containing high concentrations of nitrogen trichloride contaminant from a chloralkali plant. In a vertical plug-flow vaporizer having an upward flow direction, a stream of liquid chlorine containing nitrogen trichloride is received. A gas such as air, nitrogen or chlorine gas is introduced into the liquid stream upstream of the boiling zone of the vaporizer to induce a flow regime, for example annular flow or mist flow, that prevents a mass accumulation of nitrogen trichloride in the vaporizer. The liquid chlorine containing nitrogen trichloride is vaporized. The resulting gas stream may be processed to destroy the nitrogen trichloride and recycled to the chlorine production train.

公开(公告)号：US09040758B2

公开(公告)日：2015-05-26

申请号：US13388836

申请日：2009-08-18

申请人： Sergio Berretta

发明人： Sergio Berretta

IPC分类号： C07C27/26 ,  C07C201/16 ,  C02F1/04 ,  C02F1/20 ,  C02F101/38

CPC分类号： C07C201/16 ,  C02F1/04 ,  C02F1/20 ,  C02F2101/38 ,  C02F2209/06 ,  C07C205/06

摘要： A method of removing alkalinity and salt from a nitroaromatic product downstream of water washing to remove mineral acids and alkaline washing to remove salts of organic acids, comprises washing the product stream with an acidic aqueous solution, prior to the step of removing excess organic reactant, by steam stripping or distillation. Acid removed from the stripper or column is recycled back for use in the acidic washing. The acidic washing is done instead of the neutral washing step of the prior art. It removes residual salt and decreases the level of entrained colloidal water in the nitroaromatic product.

摘要翻译： 一种从水洗下游的硝基芳族化合物产物中去除碱度和盐的方法，以除去无机酸和碱洗涤以除去有机酸的盐，包括在除去过量有机反应物的步骤之前用酸性水溶液洗涤产物流， 通过汽提或蒸馏。 从汽提塔或塔中除去的酸被循环使用，用于酸洗。 进行酸性洗涤代替现有技术的中性洗涤步骤。 它去除残留的盐并降低硝基芳族产物中夹带的胶体水的含量。

公开(公告)号：US09012701B2

公开(公告)日：2015-04-21

申请号：US13388836

申请日：2009-08-18

申请人： Sergio Berretta

发明人： Sergio Berretta

IPC分类号： C07C27/26 ,  C07C201/16 ,  C02F1/04 ,  C02F1/20 ,  C02F101/38

摘要： A method of removing alkalinity and salt from a nitroaromatic product downstream of water washing to remove mineral acids and alkaline washing to remove salts of organic acids, comprises washing the product stream with an acidic aqueous solution, prior to the step of removing excess organic reactant, by steam stripping or distillation. Acid removed from the stripper or column is recycled back for use in the acidic washing. The acidic washing is done instead of the neutral washing step of the prior art. It removes residual salt and decreases the level of entrained colloidal water in the nitroaromatic product.