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1. 发明授权

US06953869B2 Process for working up secondary components in the preparation of dinitrotoluene 有权
标题翻译：在制备二硝基甲苯时处理次要组分的方法
公开(公告)号：US06953869B2
公开(公告)日：2005-10-11
申请号：US10878079
申请日：2004-06-28
申请人： Jürgen Münnig , Dietmar Wastian , Wolfgang Lorenz , Berthold Keggenhoff
发明人： Jürgen Münnig , Dietmar Wastian , Wolfgang Lorenz , Berthold Keggenhoff
IPC分类号： C07C201/08 , C02F1/26 , C02F1/66 , C02F9/00 , C07C201/16 , C07C205/06 , C07C205/00
CPC分类号： C02F1/26 , C02F1/66 , C02F9/00 , C02F2103/36 , C07C201/16 , C07C205/06
摘要： The present invention relates to a process for working up organic secondary components which are formed in the one-stage or two-stage nitration of toluene to dinitrotoluene. These organic secondary components are present in the acidic and alkaline waste water from the dinitrotoluene washing step and in the aqueous distillate from the sulfuric acid concentration step, together with small amounts of mononitrotoluene and dinitrotoluene. This process comprises a) combining the acidic and alkaline waste waters from the washing step and the aqueous distillate from the sulfuric acid concentration step such that the resulting mixture has a pH below 5, b) separating the aqueous and organic phases which form by phase separation, and c) recycling the organic phase from step b) into the nitration process.
摘要翻译：本发明涉及一种处理甲苯一硝基甲苯硝化成二硝基甲苯形成有机二次成分的方法。这些有机次要组分存在于来自二硝基甲苯洗涤步骤的酸性和碱性废水中以及来自硫酸浓缩步骤的含水馏出物中，以及少量的一硝基甲苯和二硝基甲苯。该方法包括：a）从硫酸浓缩步骤中将洗涤步骤的酸性和碱性废水与含水馏出物混合，使得所得混合物的pH值低于5，b）分离通过相分离形成的水相和有机相，和c）将来自步骤b）的有机相再循环到硝化过程中。

2. 发明授权

US06936741B2 Process for working up the waste water obtained in the preparation of dinitrotoluene 有权
标题翻译：处理二硝基甲苯制备中得到的废水的方法
公开(公告)号：US06936741B2
公开(公告)日：2005-08-30
申请号：US10878211
申请日：2004-06-28
申请人： Jürgen Münnig , Dietmar Wastian , Wolfgang Lorenz , Berthold Keggenhoff
发明人： Jürgen Münnig , Dietmar Wastian , Wolfgang Lorenz , Berthold Keggenhoff
IPC分类号： B01D19/00 , B01D11/04 , C02F1/20 , C02F1/26 , C02F1/52 , C02F9/00 , C07C201/06 , C07C201/16 , C07C205/00
CPC分类号： C02F1/26 , C02F1/66 , C02F9/00 , C02F2103/36 , C07C201/16 , C07C205/06 , C07C205/22 , C07C205/24 , C07C205/57
摘要： The present invention relates to a process for working up or treating aqueous waste waters which are formed during the nitration of toluene to dinitrotoluene with nitrating acid. These aqueous waste waters containing acidic wash water and alkaline wash water from the dinitrotoluene washing step, and distillate from the sulfuric acid concentration step. The process comprises, a) combining the acidic and alkaline waste waters from the washing step and the aqueous distillate from the sulfuric acid concentration step such that the resulting mixture has a pH below 5, b) separating the aqueous and organic phases which are formed by phase separation, c) subjecting the aqueous phase from b) to an extraction step, wherein d) the organic components contained in the aqueous phase from c) are extracted with toluene, and e) introducing the toluene phase enriched with the organic components into the toluene nitration.
摘要翻译：本发明涉及一种处理或处理在用硝酸将甲苯硝化成二硝基甲苯期间形成的废水的处理方法。这些含有来自二硝基甲苯洗涤步骤的酸性洗涤水和碱性洗涤水的含水废水，以及来自硫酸浓缩步骤的馏出物。该方法包括：a）将来自洗涤步骤的酸性和碱性废水与来自硫酸浓缩步骤的含水馏出物混合，使得所得混合物的pH值低于5，b）将由下式形成的水相和有机相分离：相分离，c）使来自b）的水相进行萃取步骤，其中d）来自c）的水相中含有的有机组分用甲苯萃取，e）将富含有机组分的甲苯相引入甲苯硝化。

3. 发明授权

US06984762B2 Process for the two-step production of dinitrotoluene 有权
标题翻译：两步生产二硝基甲苯的方法
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。

4. 发明授权

US07442835B2 Process and apparatus for the production of phosgene 有权
标题翻译：用于生产光气的方法和设备
公开(公告)号：US07442835B2
公开(公告)日：2008-10-28
申请号：US11211898
申请日：2005-08-25
申请人： Berthold Keggenhoff , Heinrich Lokum , Jürgen Münnig
发明人： Berthold Keggenhoff , Heinrich Lokum , Jürgen Münnig
IPC分类号： C07C51/58
CPC分类号： B01J8/0085 , B01J8/067 , B01J19/002 , B01J2208/00221 , B01J2208/00522 , B01J2208/00539 , B01J2208/00849 , B01J2208/025 , B01J2219/00268 , C01B32/80 , Y02P20/124
摘要： The invention relates to a process for the production of phosgene, in which chlorine and carbon monoxide are reacted in the presence of an activated charcoal catalyst in a shell-and-tube reactor which contains a plurality of reaction tubes and a coolant space surrounding the reaction tubes, in which a) cooling of the reaction tubes is from the outside through the coolant space with water by evaporative cooling, and b) operation of the reaction tubes is at a pressure above the pressure in the coolant space.
摘要翻译：本发明涉及一种生产光气的方法，其中氯和一氧化碳在活性炭催化剂存在下在壳管式反应器中反应，其中包含多个反应管和围绕反应的冷却剂空间管，其中a）通过蒸发冷却将反应管的冷却从外部通过冷却剂空间与水，以及b）反应管的操作处于高于冷却剂空间中的压力的压力。

5. 发明授权

US07322565B2 Stirring device and process for carrying out a gas-liquid reaction 有权
标题翻译：搅拌装置和进行气液反应的方法
公开(公告)号：US07322565B2
公开(公告)日：2008-01-29
申请号：US11199697
申请日：2005-08-09
申请人： Rainer Buse , Berthold Keggenhoff , Jürgen Münnig , Friedhelm Steffens , Joachim Ritter
发明人： Rainer Buse , Berthold Keggenhoff , Jürgen Münnig , Friedhelm Steffens , Joachim Ritter
IPC分类号： B01F3/04
CPC分类号： B01F3/04539 , B01F3/2215 , B01F7/00641 , B01F2003/04546 , B01F2003/04567 , B01F2015/061 , B01F2215/0427 , B01F2215/0431 , B01F2215/0472 , B01F2215/0481 , B01J19/0066 , B01J2219/00076
摘要： The invention describes a stirring device made from a gassing stirrer and a liquid mixer or two liquid mixers, which are arranged on a shaft and each have a feed and at least one exit opening, wherein the exit openings of the gassing stirrer and of the liquid mixer or the liquid mixers are at a distance from one another, the ratio, a/d, of the distance, a, between the exit openings to the diameter, d, of the gassing stirrer or liquid mixer being 0.02 to 0.5 and the ratio, b/d, of the distance, b, between the outer edges to the diameter, d, of the gassing stirrer or liquid mixer being 0.01 to 0.4.
摘要翻译：本发明描述了一种由排气搅拌器和液体混合器或两个液体混合器制成的搅拌装置，它们设置在轴上，每个具有进料和至少一个出口，其中排气搅拌器和液体的出口混合器或液体混合器彼此间隔一定距离，排气口与吹气搅拌器或液体混合器的直径d之间的距离a的比值a / d为0.02至0.5， b / d之间的距离b，在外边缘与排气搅拌器或液体混合器的直径d之间的距离b为0.01至0.4。

6. 发明授权

US08153838B2 Process for producing isocyanates 有权
标题翻译：异氰酸酯的制备方法
公开(公告)号：US08153838B2
公开(公告)日：2012-04-10
申请号：US12164716
申请日：2008-06-30
申请人： Andreas Bulan , Rainer Weber , Wolfgang Lorenz , Gerhard Moormann , Friedhelm Kämper , Berthold Keggenhoff
发明人： Andreas Bulan , Rainer Weber , Wolfgang Lorenz , Gerhard Moormann , Friedhelm Kämper , Berthold Keggenhoff
IPC分类号： C07C263/00
CPC分类号： C07C263/10 , C07C263/20 , C25B1/26 , C07C265/14
摘要： An isocyanate is produced by: (a) reacting chlorine with carbon monoxide to form phosgene, (b) reacting the phosgene with an organic amine to form an isocyanate and hydrogen chloride, (c) separating the isocyanate and hydrogen chloride, (d) optionally, purifying the hydrogen chloride, (e) preparing an aqueous solution of the hydrogen chloride, (f) optionally, purifying the aqueous solution of hydrogen chloride, (g) subjecting the aqueous hydrogen chloride solution to electrochemical oxidation to form chlorine, and (h) returning at least a portion of the chlorine produced in (g) to (a).
摘要翻译：通过以下方法制备异氰酸酯：（a）使氯与一氧化碳反应以形成光气，（b）使光气与有机胺反应形成异氰酸酯和氯化氢，（c）将异氰酸酯和氯化氢分离，（d），纯化氯化氢，（e）制备氯化氢水溶液，（f）任选地，纯化氯化氢水溶液，（g）使氯化氢水溶液进行电化学氧化形成氯，和（h ）将（g）至（a）中产生的氯的至少一部分返回。

7. 发明申请

US20070012577A1 Process for producing isocyanates 审中-公开
标题翻译：异氰酸酯的制备方法
公开(公告)号：US20070012577A1
公开(公告)日：2007-01-18
申请号：US11484253
申请日：2006-07-11
申请人： Andreas Bulan , Rainer Weber , Wolfgang Lorenz , Gerhard Moormann , Friedhelm Kamper , Berthold Keggenhoff
发明人： Andreas Bulan , Rainer Weber , Wolfgang Lorenz , Gerhard Moormann , Friedhelm Kamper , Berthold Keggenhoff
IPC分类号： C25B3/06
CPC分类号： C07C263/10 , C07C263/20 , C25B1/26 , C07C265/14
摘要： An isocyanate is produced by: (a) reacting chlorine with carbon monoxide to form phosgene, (b) reacting the phosgene with an organic amine to form an isocyanate and hydrogen chloride, (c) separating the isocyanate and hydrogen chloride, (d) optionally, purifying the hydrogen chloride, (e) preparing an aqueous solution of the hydrogen chloride, (f) optionally, purifying the aqueous solution of hydrogen chloride, (g) subjecting the aqueous hydrogen chloride solution to electrochemical oxidation to form chlorine, and (h) returning at least a portion of the chlorine produced in (g) to (a).
摘要翻译：通过以下方法制备异氰酸酯：（a）使氯与一氧化碳反应以形成光气，（b）使光气与有机胺反应形成异氰酸酯和氯化氢，（c）将异氰酸酯和氯化氢分离，（d），纯化氯化氢，（e）制备氯化氢水溶液，（f）任选地，纯化氯化氢水溶液，（g）使氯化氢水溶液进行电化学氧化形成氯，和（h ）将（g）至（a）中产生的氯的至少一部分返回。

8. 发明申请

US20090166180A1 PROCESS FOR PRODUCING ISOCYANATES 有权
标题翻译：生产异氰酸酯的方法
公开(公告)号：US20090166180A1
公开(公告)日：2009-07-02
申请号：US12164716
申请日：2008-06-30
申请人： Andreas Bulan , Rainer Weber , Wolfgang Lorenz , Gerhard Moormann , Friedhelm Kamper , Berthold Keggenhoff
发明人： Andreas Bulan , Rainer Weber , Wolfgang Lorenz , Gerhard Moormann , Friedhelm Kamper , Berthold Keggenhoff
IPC分类号： B01J19/08
CPC分类号： C07C263/10 , C07C263/20 , C25B1/26 , C07C265/14
摘要： An isocyanate is produced by:(a) reacting chlorine with carbon monoxide to form phosgene, (b) reacting the phosgene with an organic amine to form an isocyanate and hydrogen chloride, (c) separating the isocyanate and hydrogen chloride, (d) optionally, purifying the hydrogen chloride, (e) preparing an aqueous solution of the hydrogen chloride, (f) optionally, purifying the aqueous solution of hydrogen chloride, (g) subjecting the aqueous hydrogen chloride solution to electrochemical oxidation to form chlorine, and (h) returning at least a portion of the chlorine produced in (g) to (a).
摘要翻译：通过以下方法制备异氰酸酯：（a）使氯与一氧化碳反应以形成光气，（b）使光气与有机胺反应形成异氰酸酯和氯化氢，（c）将异氰酸酯和氯化氢分离，（d），纯化氯化氢，（e）制备氯化氢水溶液，（f）任选地，纯化氯化氢水溶液，（g）使氯化氢水溶液进行电化学氧化形成氯，和（h ）将（g）至（a）中产生的氯的至少一部分返回。

9. 发明授权

US07555917B2 Process for purification of anhydrous hydrogen chloride gas 有权
标题翻译：纯化无水氯化氢气体的方法
公开(公告)号：US07555917B2
公开(公告)日：2009-07-07
申请号：US10787608
申请日：2004-02-26
申请人： Bill L. Brady, Jr. , Guenther Weymans , Berthold Keggenhoff , Friedhelm Steffens
发明人： Bill L. Brady, Jr. , Guenther Weymans , Berthold Keggenhoff , Friedhelm Steffens
IPC分类号： F25J3/00
CPC分类号： B01D53/002 , C01B7/0706
摘要： High boiling contaminants such as chloro-aromatic compounds are removed from a gas by compressing the gas containing the contaminant, cooling the compressed gas to reduce the temperature of the gas to at least 20° C. above the outlet temperature of a second cooling stage but above the freezing point of the highest melting compound in the first cooling stage, further cooling the gas in a second cooling stage to at least −20° C., returning cooled gas from the second cooling stage to the first cooling stage, and recovering condensate streams which contain the contaminant compound from the first and second cooling stages. An apparatus suitable for carrying out this process is also disclosed. The process of the present invention is particularly useful for removing chloro-aromatic compounds from anhydrous hydrogen chloride gas.
摘要翻译：通过压缩含有污染物的气体从气体中除去高沸点污染物，例如氯 - 芳族化合物，冷却压缩气体，将气体的温度降低至高于第二冷却阶段的出口温度至少20℃，但是高于第一冷却阶段中最高熔融化合物的凝固点，在第二冷却阶段进一步将气体冷却至至少-20℃，将冷却的气体从第二冷却段返回到第一冷却阶段，并回收冷凝物含有来自第一和第二冷却阶段的污染化合物的物流。还公开了一种适于实施该方法的装置。本发明的方法特别适用于从无水氯化氢气体中除去氯代芳族化合物。

10. 发明授权

US07312362B2 Process for the production of di- and polyamines of the diphenylmethane series 有权
标题翻译：生产二苯甲烷系列二胺和多胺的方法
公开(公告)号：US07312362B2
公开(公告)日：2007-12-25
申请号：US11657338
申请日：2007-01-24
申请人： Berthold Keggenhoff , Richard Adamson , Rudolf Uchdorf , Fritz Pohl
发明人： Berthold Keggenhoff , Richard Adamson , Rudolf Uchdorf , Fritz Pohl
IPC分类号： C07C209/24
CPC分类号： C07C209/78 , C07C209/84 , C07C263/10 , C07C211/50 , C07C265/14
摘要： The present invention relates to a process for the production of mixtures of di- and polyamines of the diphenylmethane series (MDA) containing less than 1,000 ppm of water and less than 200 ppm of aniline by reaction of aniline and formaldehyde in the presence of acid catalysts and subsequent separation of the acid catalyst and subsequent distillative separation of water and aniline in an at least a two-stage distillation including a flash evaporation and subsequent cooling.
摘要翻译：本发明涉及一种在酸催化剂存在下通过苯胺和甲醛的反应生产含有少于1,000ppm水和小于200ppm苯胺的二苯基甲烷系列（MDA）的二胺和多胺的混合物的方法随后分离酸催化剂，随后在包括闪蒸和随后冷却的至少两阶段蒸馏中进行水和苯胺的蒸馏分离。

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