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1. 发明公开

US20240157343A1 METHOD FOR THE HYDROGENATION OF AROMATIC NITRO COMPOUNDS 审中-公开
公开(公告)号：US20240157343A1
公开(公告)日：2024-05-16
申请号：US18546817
申请日：2022-02-28
申请人： Covestro Deutschland AG , Lanxess Deutschland GmbH
发明人： Bernd Pennemann , Lennart Sandbrink , Eberhard Zirngiebl , Thomas Kaese , Hans-Jürgen Quella , Paul Sprenger , Daniel Ullrich , Marc Williams
IPC分类号： B01J23/80 , B01J21/08 , B01J23/745 , B01J23/75 , B01J23/847 , B01J23/889 , B01J35/40 , B01J35/51 , B01J35/55 , B01J37/02 , B01J37/08 , C07C209/36
CPC分类号： B01J23/80 , B01J21/08 , B01J23/745 , B01J23/75 , B01J23/8472 , B01J23/8892 , B01J35/40 , B01J35/51 , B01J35/55 , B01J37/0203 , B01J37/0205 , B01J37/0236 , B01J37/086 , B01J37/088 , C07C209/36
摘要： The present invention relates (i) to a method for producing a doped copper-tetraammine-salt-based hydrogenation catalyst suitable for the hydrogenation of an aromatic nitro compound such that an aromatic amine is obtained, the hydrogenation catalyst comprising copper in metal form or in oxidic form and a doping metal selected from iron, cobalt, manganese, vanadium, zinc or a mixture of two or more thereof in metal form or in oxidic form on a carrier, the carrier comprising silicon dioxide shaped bodies and/or silicon carbide shaped bodies, (ii) to a doped copper-tetraammine-salt-based hydrogenation catalyst obtainable using the aforementioned method according to the invention, and (iii) to a method for producing an aromatic amine, comprising the hydrogenation of an aromatic nitro compound in the presence of a doped copper-tetraammine-salt-based hydrogenation catalyst comprising copper in metal form or in oxidic form and comprising a doping metal in metal form or in oxidic form on a carrier as hydrogenation catalyst, the carrier comprising silicon dioxide shaped bodies and/or silicon carbide shaped bodies, and the hydrogenation catalyst being, more particularly, the aforementioned hydrogenation catalyst according to the invention.

2. 发明申请

US20220289662A1 METHOD FOR THE HYDROGENATION OF AROMATIC NITRO COMPOUNDS 有权
公开(公告)号：US20220289662A1
公开(公告)日：2022-09-15
申请号：US17637173
申请日：2020-08-27
申请人： Covestro Deutschland AG , Covestro Intellectual Property GmbH & Co. KG , Lanxess Deutschland GmbH
发明人： Lennart Sandbrink , Bernd Pennemann , Eberhard Zirngiebl , Martina Gerdinand , Hans-Jürgen Quella , Daniel Ullrich , Marc Williams
IPC分类号： C07C209/36 , B01J37/08 , B01J37/02 , B01J23/72
摘要： The present invention relates to a process for the preparation of an aromatic amine by hydrogenation of an aromatic nitro compound, comprising the following steps: (I) providing a copper tetramine salt-based impregnation catalyst, in particular an impregnation catalyst obtainable by the incipient wetness method, comprising a metal or metal oxide on a support as a hydrogenation catalyst. At least metallic or oxidic copper (in particular CuO) is present and the mole fraction of Cu based on all metals present is in the range of 075 to 1, and wherein the support comprises shaped silicon-dioxide shaped bodies or silicon-carbide shaped bodies; (II) optionally, activating the hydrogenation catalyst by treating with hydrogen in the absence of the aromatic nitro compound; and (III) reacting the aromatic nitro compound with hydrogen in the presence of the, optionally activated, hydrogenation catalyst to obtain the aromatic amine.

3. 发明授权

US11231727B2 Method for continuously producing a product by way of at least two coupled-together chemical reactions 有权
公开(公告)号：US11231727B2
公开(公告)日：2022-01-25
申请号：US16878923
申请日：2020-05-20
申请人： Covestro Deutschland AG
发明人： Bernd Pennemann , Erwin Dieterich , Heinz-Josef Hamacher
IPC分类号： G05D7/06 , C07C201/08 , B01J19/00 , F16K31/02 , G05B11/42 , C07C205/06
摘要： A method for continuously producing a product (A1) by way of at least two coupled-together chemical reactions (C1, C2), wherein at least two input substances (E1, E2) are fed to a first chemical reaction (C1), wherein a plurality of intermediate substances (Z1, Z2) are produced from the input substances (E1, E2) by the first chemical reaction (C1), wherein at least one of the intermediate substances (Z2) is fed to a second chemical reaction (C2), wherein the at least one fed intermediate substance (Z2) is further processed by the second chemical reaction (C2), in particular using at least one further substance (W1, W2) in a second chemical reaction (C2) to form a plurality of output substances (A1, A2), that is to say to form the chemical product (A1) and at least one further output substance (A2), wherein the flow rates (Fi) of the fed substances (E1, E2, Z1, W1, W2, A2) that are fed to one of the reactions (C1, C2) are set by a respective actuating element (VE1, VE2, VW1, VW 2, VZ 2, VA1), wherein each of the fed substances is assigned a separate actuating element, wherein a manipulated variable (SE2,R, Si,R) that is stipulated by a controller (RE2, Ri) is respectively applied to at least one of the actuating elements, wherein, for changing the production rate of the chemical product (A1), a temporary manipulated variable (SE2,temp, Si,temp) is respectively applied during a transient phase (II, III) to at least one of these actuating elements (VE2, Vi) instead of the manipulated variables (SE2, R, Si,R) stipulated by the respective controllers (RE2, Ri), wherein the temporary manipulated variable (SE2,temp, Si,temp) or the temporary manipulated variables is/are generated by at least one control unit (SE) in dependence on a default value (NV).

4. 发明授权

US10698424B2 Method for continuously producing a product by way of at least two coupled-together chemical reactions 有权
公开(公告)号：US10698424B2
公开(公告)日：2020-06-30
申请号：US15526871
申请日：2015-11-17
申请人： Covestro Deutschland AG
发明人： Bernd Pennemann , Erwin Dieterich , Heinz-Josef Hamacher
IPC分类号： G05D7/06 , C07C201/08 , B01J19/00 , F16K31/02 , C07C205/06 , G05B11/42
摘要： A method for continuously producing a product (A1) by way of at least two coupled-together chemical reactions (C1, C2), wherein at least two input substances (E1, E2) are fed to a first chemical reaction (C1), wherein a plurality of intermediate substances (Z1, Z2) are produced from the input substances (E1, E2) by the first chemical reaction (C1), wherein at least one of the intermediate substances (Z2) is fed to a second chemical reaction (C2), wherein the at least one fed intermediate substance (Z2) is further processed by the second chemical reaction (C2), in particular using at least one further substance (W1, W2) in a second chemical reaction (C2) to form a plurality of output substances (A1, A2), that is to say to form the chemical product (A1) and at least one further output substance (A2), wherein the flow rates (Fi) of the fed substances (E1, E2, Z1, W1, W2, A2) that are fed to one of the reactions (C1, C2) are set by a respective actuating element (VE1, VE2, VW1, VW 2, VZ 2, VA1), wherein each of the fed substances is assigned a separate actuating element, wherein a manipulated variable (SE2,R, Si,R) that is stipulated by a controller (RE2, Ri) is respectively applied to at least one of the actuating elements, wherein, for changing the production rate of the chemical product (A1), a temporary manipulated variable (SE2,temp, Si,temp) is respectively applied during a transient phase (II, III) to at least one of these actuating elements (VE2, Vi) instead of the manipulated variables (SE2,R, Si,R) stipulated by the respective controllers (RE2, Ri), wherein the temporary manipulated variable (SE2,temp, Si,temp) or the temporary manipulated variables is/are generated by at least one control unit (SE) in dependence on a default value (NV).

5. 发明申请

US20160244402A1 METHOD FOR PRODUCING DIAMINOTOLUENE 有权
标题翻译：生产二氨基苯甲酸的方法
公开(公告)号：US20160244402A1
公开(公告)日：2016-08-25
申请号：US15027327
申请日：2014-10-02
申请人： COVESTRO DEUTSCHLAND AG
发明人： Bernd Pennemann , Amgad Salah Moussa , Bastian Mahr
IPC分类号： C07C209/36
CPC分类号： C07C209/36 , C07C211/50
摘要： The invention relates to an industrial-scale method for the vapor-phase hydrogenation of dinitrotoluene (DNT). According to said method, a stream containing DNT is sprayed into a carrier-gas stream containing hydrogen, optionally in the presence of an atomizing gas, unevaporated liquid droplets are extracted from the substantially gaseous stream that is obtained and the resultant gas stream is catalytically hydrogenated to form diaminotoluene.
摘要翻译：本发明涉及用于二硝基甲苯（DNT）的气相氢化的工业规模的方法。根据所述方法，任选地在雾化气体存在下，将含有DNT的料流喷入含有氢气的载气流中，从得到的基本气态物流中提取未蒸发的液滴，并将所得气流催化氢化形成二氨基甲苯。

6. 发明授权

US10799810B2 Cascade tray, rectifying column containing said cascade tray, method for operating such a rectifying column, and use of same 有权
公开(公告)号：US10799810B2
公开(公告)日：2020-10-13
申请号：US16467323
申请日：2017-12-04
申请人： COVESTRO DEUTSCHLAND AG
发明人： Bernd Pennemann , Jürgen Bausa
IPC分类号： B01D3/24
摘要： The invention relates to a cascade tray suitable for use in a rectifying column and comprising openings in the weir-type cascade edge, to a rectifying column containing at least one cascade tray according to the invention, to a method for operating such a rectifying column, and to the use of a claimed rectifying column in the fractionation of specific substance mixtures.

7. 发明申请

US20200301452A1 METHOD FOR CONTINUOUSLY PRODUCING A PRODUCT BY WAY OF AT LEAST TWO COUPLED-TOGETHER CHEMICAL REACTIONS 审中-公开
公开(公告)号：US20200301452A1
公开(公告)日：2020-09-24
申请号：US16878923
申请日：2020-05-20
申请人： Covestro Deutschland AG
发明人： Bernd Pennemann , Erwin Dieterich , Heinz-Josef Hamacher
IPC分类号： G05D7/06 , C07C201/08 , B01J19/00 , F16K31/02
摘要： A method for continuously producing a product (A1) by way of at least two coupled-together chemical reactions (C1, C2), wherein at least two input substances (E1, E2) are fed to a first chemical reaction (C1), wherein a plurality of intermediate substances (Z1, Z2) are produced from the input substances (E1, E2) by the first chemical reaction (C1), wherein at least one of the intermediate substances (Z2) is fed to a second chemical reaction (C2), wherein the at least one fed intermediate substance (Z2) is further processed by the second chemical reaction (C2), in particular using at least one further substance (W1, W2) in a second chemical reaction (C2) to form a plurality of output substances (A1, A2), that is to say to form the chemical product (A1) and at least one further output substance (A2), wherein the flow rates (Fi) of the fed substances (E1, E2, Z1, W1, W2, A2) that are fed to one of the reactions (C1, C2) are set by a respective actuating element (VE1, VE2, VW1, VW 2, VZ 2, VA1), wherein each of the fed substances is assigned a separate actuating element, wherein a manipulated variable (SE2,R, Si,R) that is stipulated by a controller (RE2, Ri) is respectively applied to at least one of the actuating elements, wherein, for changing the production rate of the chemical product (A1), a temporary manipulated variable (SE2,temp, Si,temp) is respectively applied during a transient phase (II, III) to at least one of these actuating elements (VE2, Vi) instead of the manipulated variables (SE2, R, Si,R) stipulated by the respective controllers (RE2, Ri), wherein the temporary manipulated variable (SE2,temp, Si,temp) or the temporary manipulated variables is/are generated by at least one control unit (SE) in dependence on a default value (NV).

8. 发明授权

US11702381B1 Method for operating a rectification column 有权
公开(公告)号：US11702381B1
公开(公告)日：2023-07-18
申请号：US17678360
申请日：2022-02-23
申请人： Covestro Deutschland AG , Covestro LLC
发明人： Bernd Pennemann , Shuang Liang , Zhangyong Ming , Juergen Bausa
IPC分类号： B01D3/42 , C07C209/86 , B01D3/32
CPC分类号： C07C209/86 , B01D3/322 , B01D3/4205 , B01D3/4211
摘要： The present invention provides a method for operating a rectification column (1000) for separating a mixture (S) containing a component A and a component B having a boiling point higher than that of the component A at an operating pressure of the rectification column (1000) which is lower than ambient pressure, wherein the method comprises a step for controlling the mass fraction of the component B in the product stream of the component A (P1) to a value within a first target range from 0.1% to 5.0% and the mass fraction of the component A in the product stream of the component B (P2) to a value within a second target range from 0.1% to 5.0%, wherein the control is carried out as a function of a controlling temperature (TC) for which a setpoint TCsetpoint is calculated according to the equation TCsetpoint=T2+F·(T1−T2), where F is a factor which is in the range from 0.1 to 0.9 and T1 and T2 are reference temperatures, wherein in the case of a deviation in the measured control temperature (TC) from its setpoint TCsetpoint being found the control temperature (TC) is readjusted to the setpoint TCsetpoint by varying one or more of the following actuating variables: (i) heating of the column bottom (130) by the evaporator (200), (ii) the mass flow {dot over (m)}A42 of the reflux (A42) fed back into the rectification column, (iii) the mass flow {dot over (m)}P2 of the product stream P2 and (iv) the mass flow {dot over (m)}P1 of the product stream P1.

9. 发明授权

US10041921B2 Device and method for producing aromatic amines 有权
公开(公告)号：US10041921B2
公开(公告)日：2018-08-07
申请号：US14159512
申请日：2014-01-21
申请人： Covestro Deutschland AG
发明人： Bernd Pennemann , Bodo Temme
IPC分类号： G01N33/00 , C07C209/36
摘要： The invention relates to a method for producing organic amino compounds from organic nitro compounds, wherein the organic nitro compound hydrogenated to the organic amino compound with a hydrogen-containing gas stream by means of a catalyst, the reaction course of the hydrogenation being monitored by analysis of secondary products forming during hydrogenation, wherein the method is characterized in that the concentration of one or more gaseous secondary products is determined in the gas phase and if the concentration falls below a predefinable minimum concentration the hydrogenating activity of the catalyst is increased. The present invention also relates to a device for performing said method.

10. 发明公开

US20230159433A1 METHOD FOR PREPARING TOLUYLENE DIAMINE MIXTURES 审中-公开
公开(公告)号：US20230159433A1
公开(公告)日：2023-05-25
申请号：US17997250
申请日：2021-05-18
申请人： Covestro Deutschland AG
发明人： Sebastian Pohl , Bernd Pennemann
IPC分类号： C07C209/88
CPC分类号： C07C209/88
摘要： The invention relates to a method for preparing a toluylene diamine mixture which, along with toluylene diamine (TDA), also contains a high-boiling fraction, such as the high-boiling fraction which is accumulated as a sump flow in the distillative preparation of product mixtures obtained by hydrogenating dinitrotoluene. The method has a step (A), namely preparing a TDA mixture containing, based on the total mass of the mixture, (1) TDA in a range of 5 mass % to 80 mass % and (2) a high-boiling fraction in a range of 20 mass % to 95 mass %; a step (B), namely distilling TDA off from the TDA mixture, thereby obtaining a liquid TDA-depleted method product, containing (1) TDA in a range of 0 mass % to 38 mass % and (2) a high-boiling fraction in a range of 62 mass % to 100 mass %; and a step (C) namely mixing water into the TDA-depleted method product in a mixing chamber, thereby obtaining a mixture mixed with water, wherein the temperature and quantity of the water to be mixed into the mixture and the temperature and quantity of the TDA-depleted method product are matched such that the resulting temperature of the mixture mixed with water ranges from 110° C. to 250° C., and the mixture mixed with water is provided as a single phase. The mixing chamber is supplied with a pressure which is greater than or equal to the water vapor partial pressure at the resulting temperature.

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