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公开(公告)号：US4732685A
公开(公告)日：1988-03-22
申请号：US914223
申请日：1986-10-02
CPC分类号： B01J19/325 , B01D11/043
摘要： With the extraction method, a material exchange column with an ordered packing 2a or 2b on the basis of a plurality of layers 3 stacked parallel to the column axis and making point contact with one another is used. The packing 2a, 2b is perfused by a continuous and a dispersed phase in a counter current. The packing has a very large specific surface area of at least 300 m.sup.2 /m.sup.3 of packing volume. At the periphery of the packing 2a, 2b, the two phase streams are re-circulated into the packing at regular intervals through a rim seal composed of an elastic material not wettable by the dispersed phase. The rim seal is placed round the packing in the form of an elastic tube or pipe and seals the intermediate space between the internal column wall and the packing. A further improvement in the separating capacity can be achieved if pulsating operation is adopted. The method is characterized, in particular, in that an approximately constant high separating capacity is achieved with a high throughput per unit area over a relatively large loading tolerance of the column.
摘要翻译： 使用提取方法，使用具有有序填料2a或2b的材料交换柱，其基于平行于柱轴线并且彼此点接触的多个层3。 包装2a，2b由逆流中的连续分散相灌注。 填料具有非常大的比表面积至少为300m 2 / m 3的包装体积。 在包装2a，2b的周围，两相流通过由不能被分散相润湿的弹性材料构成的边缘密封圈以规则的间隔再次循环到包装中。 轮辋密封件以弹性管或管的形式放置在填料周围，并密封内部柱壁和填料之间的中间空间。 如果采用脉动操作，则可以进一步提高分离能力。 该方法的特征在于，在柱的相对大的负载公差下，在每单位面积的高通量下实现大致恒定的高分离能力。
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公开(公告)号：US08399702B2
公开(公告)日：2013-03-19
申请号：US12313469
申请日：2008-11-20
申请人： Fritz Pohl , Klaus Biskup , Rainer Bruns , Friedhelm Steffens , Lars Padeken
发明人： Fritz Pohl , Klaus Biskup , Rainer Bruns , Friedhelm Steffens , Lars Padeken
IPC分类号： C07C263/00
CPC分类号： C07C263/10 , C07C265/14
摘要： Aromatic diisocyanates are produced by reacting in the gas phase the corresponding primary aromatic diamine with phosgene. The phosgene and the primary aromatic diamine are reacted within a mean residence time of from 0.05 to 15 seconds. The aromatic diamine used contains less than 0.05 mole % overall of aliphatic amine containing no keto groups, per mole of primary amino groups.
摘要翻译： 通过在气相中使相应的伯芳族二胺与光气反应来制备芳族二异氰酸酯。 光气和主芳族二胺在平均停留时间为0.05至15秒内反应。 使用的芳族二胺包含每摩尔伯氨基少于0.05摩尔％的不含酮基的脂族胺的总体。
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公开(公告)号：US07615662B2
公开(公告)日：2009-11-10
申请号：US12001270
申请日：2007-12-11
申请人： Fritz Pohl , Klaus Biskup , Rainer Bruns , Friedhelm Steffens , Herbert Stutz
发明人： Fritz Pohl , Klaus Biskup , Rainer Bruns , Friedhelm Steffens , Herbert Stutz
IPC分类号： C07C263/00
CPC分类号： C07C263/10 , C07C265/14
摘要： Isocyanates are produced by reaction of primary amines with phosgene in the gas phase. In this process, the reaction is terminated by guiding the reaction mixture from the reaction chamber through a cooling stretch into which liquids are injected. Direct cooling takes place in the cooling stretch in one stage in two or more cooling zones connected in series.
摘要翻译： 异氰酸酯是通过伯胺与光气在气相中的反应产生的。 在该过程中，通过将反应混合物从反应室引导通过其中注入液体的冷却延伸来终止反应。 在连续串联的两个或更多个冷却区域中的一个阶段中的冷却拉伸中直接冷却。
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公开(公告)号：US20090209784A1
公开(公告)日：2009-08-20
申请号：US12378508
申请日：2009-02-17
IPC分类号： C07C263/10
CPC分类号： C01B7/035 , C07C263/10 , C07C263/20 , C07C265/14 , C07C265/12
摘要： The present invention relates to a process for the preparation of isocyanates by reacting the appropriate amines with phosgene, condensing the gas mixture thereby obtained, stripping the liquid phase thereby obtained and returning the solvent so retained in liquid form to the reaction stage. The gaseous constituents are then purified further in an absorption process.
摘要翻译： 本发明涉及通过使适当的胺与光气反应制备异氰酸酯的方法，将由此得到的气体混合物冷凝，将由此获得的液相汽提，并使溶剂保持液态返回到反应阶段。 然后在吸收过程中进一步纯化气态成分。
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公开(公告)号：US07555917B2
公开(公告)日：2009-07-07
申请号：US10787608
申请日：2004-02-26
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。
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公开(公告)号：US07541487B2
公开(公告)日：2009-06-02
申请号：US12001235
申请日：2007-12-11
申请人： Fritz Pohl , Klaus Biskup , Rainer Bruns , Friedhelm Steffens , Herbert Stutz
发明人： Fritz Pohl , Klaus Biskup , Rainer Bruns , Friedhelm Steffens , Herbert Stutz
IPC分类号： C07C263/10
CPC分类号： C07C263/10 , C07C2601/14 , C07C265/14
摘要： An isocyanate is produced by reacting a primary amine with phosgene in the gas phase above the boiling point of the amine over an average contact time of 0.05 to 15 seconds under adiabatic conditions.
摘要翻译： 在绝热条件下，平均接触时间为0.05〜15秒，通过使伯胺与光气在高于胺沸点的气相中反应来制备异氰酸酯。
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公开(公告)号：US20070287857A1
公开(公告)日：2007-12-13
申请号：US11448265
申请日：2006-06-07
IPC分类号： C07C263/10
CPC分类号： C07C209/84 , C07C209/36 , C07C263/10 , C07C211/50 , C07C265/14
摘要： The invention relates to a process for the production of toluene diisocyanate, in which the crude toluenediamine obtained from the hydrogenation is purified and then phosgenated. The purification step reduces the total amount of cyclic ketones to less than 0.1% by weight, based on 100% by weight of the toluenediamine.
摘要翻译： 本发明涉及一种生产甲苯二异氰酸酯的方法，其中从氢化得到的粗甲苯二胺被纯化然后光气化。 基于100重量％的甲苯二胺，纯化步骤将环酮的总量减少到小于0.1重量％。
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公开(公告)号：US06719957B2
公开(公告)日：2004-04-13
申请号：US10124795
申请日：2002-04-17
IPC分类号： C01B707
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.
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公开(公告)号：US20100160673A1
公开(公告)日：2010-06-24
申请号：US12636850
申请日：2009-12-14
申请人： Rainer Bruns , Fritz Pohl , Friedhelm Steffens , Volker Michele
发明人： Rainer Bruns , Fritz Pohl , Friedhelm Steffens , Volker Michele
IPC分类号： C07C263/10
CPC分类号： C07C263/10 , B01F7/00916 , B01F13/08 , B01J4/002 , B01J19/18 , B01J19/1812 , B01J2219/00123 , B01J2219/00252 , B01J2219/00254 , B01J2219/192 , B01J2219/1947 , C07C2601/16 , C07C265/14
摘要： Primary isocyanates are produced by reacting the corresponding primary amine(s) with phosgene at a temperature above the boiling temperature of the amine(s) in a tube reactor with a reaction space. In this tube reactor, at least one educt stream P containing phosgene and at least one educt stream A containing the amine(s) are fed to the reaction space via a nozzle arrangement. The nozzle arrangement includes a number of n≧1 nozzles aligned parallel to the axis of rotation of the tube reactor and a free space surrounding the nozzles. One of the educt streams A or P is fed to the reaction space via the nozzles and the other educt stream is fed to the reaction space via the free space surrounding the nozzles. The reaction space contains at least one moving mixing device.
摘要翻译： 通过在具有反应空间的管式反应器中，在高于胺的沸点温度的温度下使相应的伯胺与光气反应来制备初级异氰酸酯。 在该管式反应器中，含有光气的至少一个喷射流P和含有胺的至少一个喷射流A通过喷嘴装置进料至反应空间。 喷嘴装置包括平行于管式反应器的旋转轴线排列的多个n≥1个喷嘴和围绕喷嘴的自由空间。 一个喷射流A或P通过喷嘴被供给到反应空间，另一个喷射流通过喷嘴周围的自由空间被供给到反应空间。 反应空间包含至少一个移动混合装置。
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公开(公告)号：US20100152484A1
公开(公告)日：2010-06-17
申请号：US12632117
申请日：2009-12-07
申请人： Klaus Biskup , Rainer Bruns , Wolfgang Lorenz , Fritz Pohl , Friedhelm Steffens , Volker Michele
发明人： Klaus Biskup , Rainer Bruns , Wolfgang Lorenz , Fritz Pohl , Friedhelm Steffens , Volker Michele
IPC分类号： C07C263/10
CPC分类号： C07C263/10 , C07C265/14
摘要： Aromatic isocyanates are produced by reacting one or more aromatic primary amines with phosgene in the gas phase. The phosgene and primary aromatic amine(s) are reacted at a temperature above the boiling temperature of the amine(s) in a reactor having a reaction space which is essentially rotationally symmetric to the direction of flow. The flow fate, averaged over the cross-section, of the reaction mixture along the axis of the essentially rotationally symmetric reaction space in the section of the reaction space in which the conversion of the amine groups into isocyanate groups is between 4 and 80 % is not more than 8 m/sec. The flow rate averaged over the cross-section of the reaction mixture along the axis of the essentially rotationally symmetric reaction space in the section of the reaction space in which the conversion of the amine groups into isocyanate groups is 4 to 80 % is always below the flow rate averaged over the cross-section at the start of this section.
摘要翻译： 通过一种或多种芳族伯胺与气相中的光气反应制备芳族异氰酸酯。 光气和伯芳基胺在具有反应空间的反应器中在高于胺的沸点温度的温度下反应，反应空间基本上与流动方向旋转对称。 反应混合物沿着反应空间部分中基本上旋转对称的反应空间轴线的横截面平均流动，其中胺基转化为异氰酸酯基的反应空间为4-80％ 不超过8米/秒。 反应混合物的横截面上的平均流量在反应空间的基本上旋转对称的反应空间的轴上，其中胺基转化为异氰酸酯基团的部分总是低于 在本节开头的横截面上平均流量。
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