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公开(公告)号：DK243179A
公开(公告)日：1979-12-13
申请号：DK243179
申请日：1979-06-11
Applicant: HOECHST AG
Inventor： BEHRINGER H , KARRENBAUER K
IPC: C07C245/20 , C07C20060101 , C07C67/00 , C07C241/00 , C07C
Abstract: The invention provides a process for the continuous diazotization of primary aromatic amines by reacting an aqueous solution or suspension of the amine in a mineral acid with an aqueous sodium nitrite solution. To this end, the lower portion of a cylindrical diazotization vessel placed in upright position is fed continuously with an aqueous mineral acid solution or suspension of a diazotizable primary aromatic amine. At the same time, the vessel is fed, via one or more inlets arranged one above the other so as to open laterally thereinto, with an aqueous sodium nitrite solution, the amine and nitrite being used in stoichiometric proportions, or the nitrite being used in a stoichiometric deficiency and the acid being used in an excess of about 1 to 3 equivalents per amine equivalent in the mineral acid solution. The resulting mixture is reacted while producing a laminar flow of liquid matter at temperatures of about 5 DEG to 30 DEG C. Next, reaction mixture is removed, in accordance with the diazotization velocity of the particular amine used, from the upper portion of the diazotization vessel at a place where the reaction mixture is substantially free from nitrous acid, said place being situated in the vessel at a level which is the higher the lower the diazotization velocity of the amine used. The reaction mixture removed is finally filtered and diazonium salt-containing solution is delivered to a sojourn zone.
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公开(公告)号：DK50982A
公开(公告)日：1982-08-08
申请号：DK50982
申请日：1982-02-05
Applicant: HOECHST AG
Inventor： KARRENBAUER K , BEHRINGER H , REHBERG H
IPC: C07C245/20 , C07C67/00 , C07C241/00 , C09B41/00 , G01N7/00 , C07C
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Patent Agency Ranking
公开(公告)号：SE405322B
公开(公告)日：1978-12-04
申请号：SE1443771
申请日：1971-11-11
Applicant: HOECHST AG
Inventor： KARRENBAUER K , JAEKEL G , KIRSTEIN D , GOEDICKE E
Abstract: 1355990 Biologically purifying effluents KNAPSACK AG 16 Nov 1971 [5 Dec 1970] 53134/71 Heading C1C [Also in Divisions B1 and G1] The escape of foam from a closed reactor 1 having a mechanical defoaming means 7 therein is inhibited by continuously regulating within a predetermined range the foam pressure prevailing above the liquid phase, by modifying the level of the liquid phase between upper and lower levels 10, 11 through automatic adjustment of the valves 4, 5 controlling the inlet and outlet lines 2, 3 for liquid. The apparatus also includes a gas admission tube 6, a hollow driving shaft 8 of the defoamer 7, which serves as an outlet for gas, and a control system 9 arranged to actuate valves 4, 5 in response to signals from the pressure meter (PC) and level meter (LC). The method is applicable particularly to aerobic fermentation, for example the microbiological purification of effluents, involving intensive foam formation varying at irregular intervals.
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公开(公告)号：SE378406B
公开(公告)日：1975-09-01
申请号：SE832371
申请日：1971-06-28
Applicant: HOECHST AG
Inventor： JAEKEL G , GOEDICKE E , KARRENBAUER K , KIRSTEIN D
Abstract: 1322439 Aerating liquids KNAPSACK AG 19 Aug 1971 [31 Aug 1970] 38947/71 Heading B1C [Also in Division Cl] In a method and apparatus for purification of polluted effluent the liquid passes through a plurality of shearing zones whereby the continuous formation of new gas bubbles with fresh surfaces is effected. In the apparatus shown the liquid and oxygen-containing gas enter at the bottom and the shearing zones comprise rotatable impellers 4 which force the liquid and gas outwardly through apertures 5. Baffles 6 and flow guides 8 cause the mixture to circulate radially without turbulence and treated liquid is discharged at the top of the apparatus.
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公开(公告)号：BR7906545A
公开(公告)日：1980-07-08
申请号：BR7906545
申请日：1979-10-12
Applicant: HOECHST AG
Inventor： KARRENBAUER K , REHBERG H , BEHRINGER H
IPC: C09B41/00
Abstract: The invention relates to a process for the continuous manufacture of azo pigments, wherein a coupling component is reacted, inside a reaction zone filled with a previously produced suspension of the azo pigment to be made, with an aqueous solution of a diazo component at 10 DEG to 60 DEG C. and over periods of 0.2 to 4 hours. To this end, an aqueous suspension or solution of the coupling component is passed in substantially laminar flow upwardly through a cylindrical reaction zone arranged in upright position; the aqueous solution of the diazo component is introduced through 2 to 50 serially arranged inlets opening laterally into the reaction zone, the diazo component being admitted in quantities decreasing from below to above and the stoichiometric end point of the coupling reaction being established at the upper most inlet opening into the reaction zone; the pH-value typical of each reaction is established by introducing dilute alkali liquor through 2 to 50 serially arranged inlets opening laterally into the reaction zone, the respective diazo component and alkali liquor inlets being arranged at different levels with respect to each other.
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公开(公告)号：DK433179A
公开(公告)日：1980-04-14
申请号：DK433179
申请日：1979-10-12
Applicant: HOECHST AG
Inventor： BEHRINGER H , KARRENBAUER K , REHBERG H
Abstract: The invention relates to a process for the continuous manufacture of azo pigments, wherein a coupling component is reacted, inside a reaction zone filled with a previously produced suspension of the azo pigment to be made, with an aqueous solution of a diazo component at 10 DEG to 60 DEG C. and over periods of 0.2 to 4 hours. To this end, an aqueous suspension or solution of the coupling component is passed in substantially laminar flow upwardly through a cylindrical reaction zone arranged in upright position; the aqueous solution of the diazo component is introduced through 2 to 50 serially arranged inlets opening laterally into the reaction zone, the diazo component being admitted in quantities decreasing from below to above and the stoichiometric end point of the coupling reaction being established at the upper most inlet opening into the reaction zone; the pH-value typical of each reaction is established by introducing dilute alkali liquor through 2 to 50 serially arranged inlets opening laterally into the reaction zone, the respective diazo component and alkali liquor inlets being arranged at different levels with respect to each other.
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公开(公告)号：BR7903698A
公开(公告)日：1980-02-05
申请号：BR7903698
申请日：1979-06-11
Applicant: HOECHST AG
Inventor： BEHRINGER H , KARRENBAUER K
IPC: C07C245/20 , C07C20060101 , C07C67/00 , C07C241/00 , C07C113/04
Abstract: The invention provides a process for the continuous diazotization of primary aromatic amines by reacting an aqueous solution or suspension of the amine in a mineral acid with an aqueous sodium nitrite solution. To this end, the lower portion of a cylindrical diazotization vessel placed in upright position is fed continuously with an aqueous mineral acid solution or suspension of a diazotizable primary aromatic amine. At the same time, the vessel is fed, via one or more inlets arranged one above the other so as to open laterally thereinto, with an aqueous sodium nitrite solution, the amine and nitrite being used in stoichiometric proportions, or the nitrite being used in a stoichiometric deficiency and the acid being used in an excess of about 1 to 3 equivalents per amine equivalent in the mineral acid solution. The resulting mixture is reacted while producing a laminar flow of liquid matter at temperatures of about 5 DEG to 30 DEG C. Next, reaction mixture is removed, in accordance with the diazotization velocity of the particular amine used, from the upper portion of the diazotization vessel at a place where the reaction mixture is substantially free from nitrous acid, said place being situated in the vessel at a level which is the higher the lower the diazotization velocity of the amine used. The reaction mixture removed is finally filtered and diazonium salt-containing solution is delivered to a sojourn zone.
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