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1. 发明专利

JP2010260858A Process for preparing aromatic amine 审中-公开
标题翻译：制备芳香胺的方法
公开(公告)号：JP2010260858A
公开(公告)日：2010-11-18
申请号：JP2010102260
申请日：2010-04-27
申请人： Bayer Materialscience Ag , バイエルマテリアルサイエンスアクチエンゲゼルシャフトBayer MaterialScience AG
发明人： SOMMER KNUT , WILKE KARL-HEINZ , LEHNER PETER , GEHLEN FRANZ-ULRICH , MLECZKO LESLAW , SCHUBERT STEPHAN , BELLINGHAUSEN RAINER , HOFFMANN EVIN HIZALER
IPC分类号： C07C209/36 , B01J23/648 , B01J35/10 , C07B61/00 , C07C211/46 , C07C211/47
CPC分类号： C07C209/36 , C07C211/46
摘要： PROBLEM TO BE SOLVED: To provide a process by which an aromatic amine of formula I is produced by hydrogenating a nitroaromatic compound of formula II in the gas phase using a catalyst arranged as a stationary bed or a virtually stationary bed in a reactor. SOLUTION: The catalyst in the reactor is at least partially replaced continuously or at periodic intervals. In the process, at least 10% of the catalyst is replaced within a period of time of 20 days each from the start of the hydrogenation in the case of continuous replacement of the catalyst and within 20 days after the start of each operating period in the case of replacement of the catalyst at the periodic intervals. COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：提供一种通过使用在反应器中设置为固定床或实际上静止的床的催化剂在气相中氢化式II的硝基芳族化合物来制备式I的芳族胺的方法。解决方案：反应器中的催化剂至少部分地被连续地或以周期性间隔替代。在该过程中，在连续更换催化剂的情况下，在氢化开始后的20天内，在每个操作期开始后的20天内，至少10％的催化剂被更换以周期性间隔更换催化剂的情况。版权所有（C）2011，JPO＆INPIT

2. 发明专利

JP2009067782A Purification method of aromatic amine 有权
标题翻译：芳香胺的纯化方法
公开(公告)号：JP2009067782A
公开(公告)日：2009-04-02
申请号：JP2008209713
申请日：2008-08-18
申请人： Bayer Materialscience Ag , バイエルマテリアルサイエンスアクチエンゲゼルシャフトBayer MaterialScience AG
发明人： SOMMER KNUT , GEHLEN FRANZ-ULRICH , LEHNER PETER , DUEX ANDRE , MAROTZ BENIE
IPC分类号： C07C209/84 , C07C211/46
CPC分类号： C07C209/84 , C07C211/46
摘要： PROBLEM TO BE SOLVED: To provide a purification method of aromatic amines obtained by reduction of aromatic nitro compounds.
SOLUTION: Aromatic amines which have been obtained by reduction of aromatic nitro compounds are purified by mixing the crude amine obtained after phase separation with an aqueous, alkali metal hydroxide solution and subsequent distillation of this mixture over a distillation column. The distillation column has at least an upper and a lower condensing part and a recovering part. The bottom product of the distillation column is partly completely washed out and is partly evaporated in a main evaporator and at least one downstream re-evaporator and partly recycled back into the column.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：待解决的问题：提供通过还原芳族硝基化合物获得的芳族胺的纯化方法。解决方案：通过还原芳族硝基化合物获得的芳族胺通过将相分离后获得的粗胺与碱金属氢氧化物水溶液混合并随后通过蒸馏塔蒸馏该混合物来纯化。蒸馏塔至少具有上部和下部冷凝部分以及回收部分。蒸馏塔的底部产物被部分地完全洗掉，并在主蒸发器和至少一个下游再蒸发器中部分蒸发并部分地再循环回塔中。版权所有（C）2009，JPO＆INPIT

3. 发明专利

DE102007039091A1 未知
公开(公告)号：DE102007039091A1
公开(公告)日：2009-02-19
申请号：DE102007039091
申请日：2007-08-18
申请人： BAYER MATERIALSCIENCE AG
发明人： SOMMER KNUT , GEHLEN FRANZ-ULRICH , LEHNER PETER , DUEX ANDRE , MAROTZ BENIE
IPC分类号： C07C209/84
摘要： Purifying aromatic amines, produced by reduction of aromatic nitro compound, comprises separating reaction water generated during the reduction; mixing the raw amine (1) with an aqueous solution of an alkali hydroxide (2); feeding the mixture into a distillation column; partially/completely extracting the residue; partially vaporizing the residue in a main vaporizer and at least one post vaporizer; and completely returning the gas phases (10), and partially refeeding the fluid phases in the column and partially/completely discharging the liquid phase that occurs in the post evaporator. Purification of aromatic amines, which are produced by reduction of aromatic nitro compound, where the product mixture obtained from the reduction step is subjected to the cleaning process, comprises separating the reaction water generated during the reduction step by phase separation, where the obtained raw amine has a solubility of water in raw amine conforming to the remaining quantity of raw amine to water, which is dependent on pressure and temperature as well as the exact composition of the raw amine and which has 4-10 mass.% of the raw amine; mixing the obtained raw amine with an aqueous solution of an alkali hydroxide; feeding the mixture into a distillation column, where the distillation column has an upper reinforcing part, a lower reinforcing part and an output part; partially or completely extracting the residue from the area below the output part; optionally vaporizing the residue; partially vaporizing the obtained residue in a main vaporizer and at least one post vaporizer kept downstream, where the post vaporizer at high temperature is operated than the main evaporator up to a residual content of aromatic amines in the operation of the post vaporizer of 0-98 mass%; and completely returning the obtained gas phases, and partially refeeding the fluid phases in the column either below or over the output part and partially or completely discharging the liquid phase (5) that occurs in the post evaporator.

4. 发明专利

BRPI0803057A2 未知
公开(公告)号：BRPI0803057A2
公开(公告)日：2009-06-02
申请号：BRPI0803057
申请日：2008-08-18
申请人： BAYER MATERIALSCIENCE AG
发明人： SOMMER KNUT , GEHLEN FRANZ-ULRICH , LEHNER PETER , DUEX ANDRE , MAROTZ BENIE
IPC分类号： B01D3/34 , C07C209/84
摘要： Purifying aromatic amines, produced by reduction of aromatic nitro compound, comprises separating reaction water generated during the reduction; mixing the raw amine (1) with an aqueous solution of an alkali hydroxide (2); feeding the mixture into a distillation column; partially/completely extracting the residue; partially vaporizing the residue in a main vaporizer and at least one post vaporizer; and completely returning the gas phases (10), and partially refeeding the fluid phases in the column and partially/completely discharging the liquid phase that occurs in the post evaporator. Purification of aromatic amines, which are produced by reduction of aromatic nitro compound, where the product mixture obtained from the reduction step is subjected to the cleaning process, comprises separating the reaction water generated during the reduction step by phase separation, where the obtained raw amine has a solubility of water in raw amine conforming to the remaining quantity of raw amine to water, which is dependent on pressure and temperature as well as the exact composition of the raw amine and which has 4-10 mass.% of the raw amine; mixing the obtained raw amine with an aqueous solution of an alkali hydroxide; feeding the mixture into a distillation column, where the distillation column has an upper reinforcing part, a lower reinforcing part and an output part; partially or completely extracting the residue from the area below the output part; optionally vaporizing the residue; partially vaporizing the obtained residue in a main vaporizer and at least one post vaporizer kept downstream, where the post vaporizer at high temperature is operated than the main evaporator up to a residual content of aromatic amines in the operation of the post vaporizer of 0-98 mass%; and completely returning the obtained gas phases, and partially refeeding the fluid phases in the column either below or over the output part and partially or completely discharging the liquid phase (5) that occurs in the post evaporator.

5. 发明专利

DE102006004943A1 未知
公开(公告)号：DE102006004943A1
公开(公告)日：2007-08-09
申请号：DE102006004943
申请日：2006-02-03
申请人： BAYER MATERIALSCIENCE AG
发明人： KNAUF THOMAS , GEHLEN FRANZ-ULRICH , SCHMIEDLER JOERG , PILARCZYK KLAUS , DRINDA PETER
IPC分类号： B01D17/06 , C07C201/16 , C07C205/06
摘要： Preparation of nitrobenzene comprises reacting benzene with nitric acid to give nitrobenzene, washing the raw nitrobenzene in an acid, alkaline or neutral wash with water, and removing the raw nitrobenzene from water and benzene. Preparation of nitrobenzene comprises reacting benzene with nitric acid to give nitrobenzene, washing the raw nitrobenzene in an acid, alkaline or neutral wash with water, and removing the raw nitrobenzene from water and benzene, where the step of washing the nitrobenzene in neutral wash with water comprises mixing the raw nitrobenzene with water in a mixing medium and dispersing such that the organic phase essentially containing nitrobenzene is at least partially dispersed, supplying the dispersion to an electrophoresis-unit, in which the dispersion is applied by breaking an electric DC voltage and subsequently separating the aqueous and the organic phase.

6. 发明专利

PT2028176E PROCESSO DE PURIFICA??O DE AMINAS AROM?TICAS 未知
公开(公告)号：PT2028176E
公开(公告)日：2011-05-31
申请号：PT08013972
申请日：2008-08-05
申请人： BAYER MATERIALSCIENCE AG
发明人： GEHLEN FRANZ-ULRICH , SOMMER KNUT , LEHNER PETER , ANDRE D X , MAROTZ BENIE
IPC分类号： C07C209/84 , C07C211/46

7. 发明专利

AT501111T 未知
公开(公告)号：AT501111T
公开(公告)日：2011-03-15
申请号：AT08013972
申请日：2008-08-05
申请人： BAYER MATERIALSCIENCE AG
发明人： SOMMER KNUT , GEHLEN FRANZ-ULRICH , LEHNER PETER , DUEX ANDRE , MAROTZ BENIE
IPC分类号： C07C209/84 , C07C211/46
摘要： Purifying aromatic amines, produced by reduction of aromatic nitro compound, comprises separating reaction water generated during the reduction; mixing the raw amine (1) with an aqueous solution of an alkali hydroxide (2); feeding the mixture into a distillation column; partially/completely extracting the residue; partially vaporizing the residue in a main vaporizer and at least one post vaporizer; and completely returning the gas phases (10), and partially refeeding the fluid phases in the column and partially/completely discharging the liquid phase that occurs in the post evaporator. Purification of aromatic amines, which are produced by reduction of aromatic nitro compound, where the product mixture obtained from the reduction step is subjected to the cleaning process, comprises separating the reaction water generated during the reduction step by phase separation, where the obtained raw amine has a solubility of water in raw amine conforming to the remaining quantity of raw amine to water, which is dependent on pressure and temperature as well as the exact composition of the raw amine and which has 4-10 mass.% of the raw amine; mixing the obtained raw amine with an aqueous solution of an alkali hydroxide; feeding the mixture into a distillation column, where the distillation column has an upper reinforcing part, a lower reinforcing part and an output part; partially or completely extracting the residue from the area below the output part; optionally vaporizing the residue; partially vaporizing the obtained residue in a main vaporizer and at least one post vaporizer kept downstream, where the post vaporizer at high temperature is operated than the main evaporator up to a residual content of aromatic amines in the operation of the post vaporizer of 0-98 mass%; and completely returning the obtained gas phases, and partially refeeding the fluid phases in the column either below or over the output part and partially or completely discharging the liquid phase (5) that occurs in the post evaporator.

8. 发明专利

SG150462A1 PROCESS FOR THE PURIFICATION OF AROMATIC AMINES 未知
公开(公告)号：SG150462A1
公开(公告)日：2009-03-30
申请号：SG2008059826
申请日：2008-08-13
申请人： BAYER MATERIALSCIENCE AG
发明人： SOMMER DR KNUT , GEHLEN FRANZ-ULRICH , LEHNER DR PETER , DUEX ANDRE , MAROTZ BENIE
摘要： PROCESS FOR THE PURIFICATION OF AROMATIC AMINES Aromatic amines which have been obtained by reduction of aromatic nitro compounds are purified by mixing the crude amine obtained after phase separation with an aqueous, alkali metal hydroxide solution and subsequent distillation of this mixture over a distillation column. The distillation column has at least an upper and a lower rectifying part and a stripping part. The bottom product of the distillation column is partly to completely sluiced out and is partly evaporated in a main evaporator and at least one downstream re-evaporator and partly recycled back into the column.

9. 发明专利

AT413376T 未知
公开(公告)号：AT413376T
公开(公告)日：2008-11-15
申请号：AT07001111
申请日：2007-01-19
申请人： BAYER MATERIALSCIENCE AG
发明人： KNAUF THOMAS , GEHLEN FRANZ-ULRICH , SCHMIEDLER JOERG , PILARCZYK KLAUS , DRINDA PETER
IPC分类号： C07C201/16 , C07C205/06
摘要： Preparation of nitrobenzene comprises reacting benzene with nitric acid to give nitrobenzene, washing the raw nitrobenzene in an acid, alkaline or neutral wash with water, and removing the raw nitrobenzene from water and benzene. Preparation of nitrobenzene comprises reacting benzene with nitric acid to give nitrobenzene, washing the raw nitrobenzene in an acid, alkaline or neutral wash with water, and removing the raw nitrobenzene from water and benzene, where the step of washing the nitrobenzene in neutral wash with water comprises mixing the raw nitrobenzene with water in a mixing medium and dispersing such that the organic phase essentially containing nitrobenzene is at least partially dispersed, supplying the dispersion to an electrophoresis-unit, in which the dispersion is applied by breaking an electric DC voltage and subsequently separating the aqueous and the organic phase.

10. 发明专利

ES2392269T3 Procedimiento para la preparación de aminas aromáticas 未知
公开(公告)号：ES2392269T3
公开(公告)日：2012-12-07
申请号：ES07013870
申请日：2007-07-16
申请人： BAYER MATERIALSCIENCE AG
发明人： SOMMER KNUT , SCHWARZ IDO , BUCHOLZ SUSANNE , GEHLEN FRANZ-ULRICH , LAGO ANDRE , WILKE KARL-HEINZ , ORZESEK HOLGER , PIRKL HANS-GEORG , LEHNER PETER , SCHUBERT STEPHAN
IPC分类号： C07C209/36 , C07C211/46
摘要： Procedimiento para la preparación de aminas aromáticas de la formulaen la que R1 y R2, independientemente uno de otro, significan hidrógeno, metilo o etilo, pudiendo significar R1adicionalmente amino, mediante la hidrogenación de compuestos nitroaromáticos de la fórmulaen la que R2 y R3, independientemente uno de otro, significan hidrógeno, metilo o etilo, pudiendo significar R3adicionalmente nitro,con hidrógeno en catalizadores fijos,* en el que la hidrogenación se lleva a cabo a una presión absoluta de 100 a 5000 kPa y a una temperatura deentrada de la mezcla gaseosa usada de 150 a 400 °C y una temperatura del catalizador máxima de 600 °C encondiciones adiabáticas, y* en el que se hace pasar por los catalizadores fijos al comienzo de la hidrogenación una mezcla gaseosa quecontiene por mol de grupo nitro de 3 a 150 moles de hidrógeno, así como de 1 a 100 moles de agua, y* en el que de la mezcla de reacción obtenida en la hidrogenación se separa el hidrógeno y el hidrógenoesencialmente exento de la amina aromática se recircula a la hidrogenación, siendo la proporción de la aminaaromática recirculada con la corriente de hidrógeno a la hidrogenación inferior al 15 % de la amina aromáticaque se ha obtenido en la hidrogenación.

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