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    Preparation of .epsilon.-caprolactam by catalytic rearrangement of cyclohexanone-oxime
    12.
    发明授权
    Preparation of .epsilon.-caprolactam by catalytic rearrangement of cyclohexanone-oxime 失效
    通过催化重排环己酮 - 肟制备ε-己内酰胺

    公开(公告)号：US4248782A

    公开(公告)日：1981-02-03

    申请号：US78031

    申请日：1979-09-24

    Applicant: Hugo Fuchs ,  Uwe Brand ,  Peter Horn

    Inventor： Hugo Fuchs ,  Uwe Brand ,  Peter Horn

    IPC: C07D201/04

    CPC classification number: C07D201/04 ,  Y02P20/52

    Abstract: In a process for the preparation of .epsilon.-caprolactam by catalytic rearrangement of cyclohexanone-oxime in the gas phase at from 230.degree. to 450.degree. C. over a supported catalyst, containing boron trioxide, in a fluidized bed, wherein the catalyst is removed from the fluidized bed at the rate at which it becomes spent and is treated, in a fluidized state, with gases containing molecular oxygen at from 600.degree. to 900.degree. C., after which boron trioxide or boric acid is added to the fluidized catalyst, at from 300.degree. to 900.degree. C., before the catalyst is returned to the fluidized bed, the improvement that boron trioxide or boric acid of particle size from 0.05 to 1.5 mm is fed to the fluidized catalyst at one or more points.

    Abstract translation: 在通过在230℃至450℃的气相中催化重排环己酮 - 肟在含有三氧化硼的载体催化剂的流化床中制备ε-己内酰胺的方法，其中将催化剂从 流化床以其流失的速率以流化状态处理含有分子氧的气体在600-900℃，之后将三氧化硼或硼酸加入到流化催化剂中，在 在催化剂返回到流化床之前，从300℃升至900℃，改善将粒径为0.05-1.5mm的三氧化硼或硼酸以一个或多个点进料到流化催化剂中。

    Continuous extraction of caprolactam from crude lactam
    13.
    发明授权
    Continuous extraction of caprolactam from crude lactam 失效
    从内酰胺连续提取己内酰胺

    公开(公告)号：US4154729A

    公开(公告)日：1979-05-15

    申请号：US848210

    申请日：1977-11-03

    Applicant: Hugo Fuchs ,  Uwe Brand ,  Klaus Kartte

    Inventor： Hugo Fuchs ,  Uwe Brand ,  Klaus Kartte

    IPC: C07D201/16

    CPC classification number: C07D201/16

    Abstract: In a process for the continuous extraction of caprolactam from crude lactam by means of benzene in counter-current, in which crude lactam is fed into the upper part of an extraction zone and benzene into the lower part, a solution of caprolactam in benzene is taken off at the top and an aqueous solution containing impurities is taken off at the bottom, the improvement that water is additionally fed into the upper part of the extraction zone and a part of the aqueous solution, containing impurities, obtained at the bottom of the extraction zone is recycled into the extraction zone. Caprolactam is used for the manufacture of nylon.

    Abstract translation: 在将粗制内酰胺进料到提取区上部并进入下部的苯中，通过逆流中的苯从粗制内酰胺连续提取己内酰胺的方法，将己内酰胺在苯中的溶液 在底部取出含有杂质的水溶液，改善了将水另外进料到提取区的上部，并将部分含有杂质的水溶液在提取物的底部获得 区域被回收到提取区域。 己内酰胺用于制造尼龙。

    Manufacture of cyclohexanone oxime
    14.
    发明授权
    Manufacture of cyclohexanone oxime 失效
    制造环己酮肟

    公开(公告)号：US4031139A

    公开(公告)日：1977-06-21

    申请号：US652421

    申请日：1976-01-26

    Applicant: Guenther Rapp ,  Hugo Fuchs ,  Erwin Thomas

    Inventor： Guenther Rapp ,  Hugo Fuchs ,  Erwin Thomas

    IPC: C07D223/08 ,  C07C67/00 ,  C07C239/00 ,  C07C251/46 ,  C07D201/04 ,  C07D223/10 ,  C07C131/04

    CPC classification number: C07D201/04

    Abstract: An improved process for the manufacture of cyclohexanone oxime by reacting cyclohexanone with an aqueous hydroxylammonium-ammonium sulfate solution at temperatures above the melting point of cyclohexanone oxime by the countercurrent process, the improvement consisting in that the reaction is carried out in the absence of solvents and neutralizing and/or buffer salts at pHs of up to 0.5 until equilibrium is reached, the oximes resulting during the reaction being separated from the aqueous phase and the aqueous phase being extracted with cyclohexanone and then subjected to steam distillation.

    Abstract translation: 通过逆流法在环己酮肟的熔点以上的温度下使环己酮与羟基铵 - 硫酸铵水溶液反应制备环己酮肟的改进方法，其改进在于反应在不存在溶剂的情况下进行， 中和和/或缓冲盐的pH值高达0.5，直到达到平衡，反应中产生的肟与水相分离，水相用环己酮萃取，然后进行蒸汽蒸馏。

    Processing polycaprolactam extraction liquors
    15.
    发明授权
    Processing polycaprolactam extraction liquors 失效
    加工聚己内酰胺提取液

    公开(公告)号：US3992372A

    公开(公告)日：1976-11-16

    申请号：US560313

    申请日：1975-03-20

    Applicant: Rudolph Hans Gath ,  Hugo Fuchs ,  Ruediger Schmitz ,  Klaus Kartte ,  Uwe Brand

    Inventor： Rudolph Hans Gath ,  Hugo Fuchs ,  Ruediger Schmitz ,  Klaus Kartte ,  Uwe Brand

    IPC: C08G69/46 ,  C07D201/16

    CPC classification number: C08G69/46

    Abstract: A process for processing polycaprolactam extraction liquors by evaporation of water and distillation of the residue in which the evaporation of water is carried out in a plurality of stages and the evaporation energy for the removal of the bulk of the water is taken from the heat liberated in the rearrangement of cyclohexanone oxime to caprolactam in oleum or sulfuric acid by using the extraction water for cooling the rearrangement mixture and utilizing the heat absorbed by the extraction water for the concentration of this extraction water by evaporation of water.

    Abstract translation: 通过蒸发水处理聚己内酰胺提取液的方法，并且蒸馏残留物，其中水的蒸发在多个阶段中进行，并且用于除去大部分水的蒸发能源取自在 通过使用提取水冷却重排混合物并利用由萃取水吸收的热量，通过蒸发水将该萃取水浓缩，将环己酮肟重排为己内酰胺在发烟硫酸或硫酸中。

    Workup of distillation residues from the purification of caprolactam
    18.
    发明授权
    Workup of distillation residues from the purification of caprolactam 失效
    来自己内酰胺纯化的蒸馏残留物的后处理

    公开(公告)号：US4892624A

    公开(公告)日：1990-01-09

    申请号：US236215

    申请日：1988-08-25

    Applicant: Hugo Fuchs

    Inventor： Hugo Fuchs

    IPC: C07D201/16

    CPC classification number: C07D201/16

    Abstract: Distillation residues from the purification of caprolactam are worked up by heating in the presence of sodium hydroxide or potassium hydroxide and in the presence of a high-boiling hydrocarbon at from 250.degree. to 500.degree. C. and continuously removing the caprolactam.

    Abstract translation: 通过在氢氧化钠或氢氧化钾存在下加热并在250-500℃的高沸点烃的存在下加热己内酰胺纯化的蒸馏残留物，并连续除去己内酰胺。

    Neutralization of reaction mixtures obtained by Beckman rearrangement of cyclohexanone oxime
    19.
    发明授权
    Neutralization of reaction mixtures obtained by Beckman rearrangement of cyclohexanone oxime 失效
    通过Beckman重排环己酮肟获得的反应混合物中和

    公开(公告)号：US4806638A

    公开(公告)日：1989-02-21

    申请号：US109405

    申请日：1987-10-19

    Applicant: Uwe Brand ,  Ruediger Schmitz ,  Ernst Deuker ,  Hugo Fuchs

    Inventor： Uwe Brand ,  Ruediger Schmitz ,  Ernst Deuker ,  Hugo Fuchs

    IPC: C07D201/04 ,  C07D201/16

    CPC classification number: C07D201/16

    Abstract: Reaction mixtures obtained by Beckmann rearrangement of cyclohexanone oxime with sulfuric acid or oleum are neutralized by a process which comprises the following steps:(a) mixing the reaction mixture with recycled ammonium sulfate mother liquor whose concentration is chosen so that no solid ammonium sulfate is precipitated during the neutralization,(b) neutralization by feeding gaseous ammonia which contains water or an aqueous ammonium sulfate solution in finely divided liquid form through a plurality of nozzle orifices into the solution of the reaction mixture in the ammonium sulfate mother liquor at elevated temperatures,(c) separation of crude lactam from the aqueous ammonium sulfate solution,(d) evaporation of the ammonium sulfate solution under reduced pressure and with separation of the crystalline ammonium sulfate from the ammonium sulfate mother liquor and(e) recycling of the ammonium sulfate mother liquor to stage a).

    Abstract translation: 通过包含以下步骤的方法中和通过Beckmann重排环己酮肟与硫酸或发烟硫酸得到的反应混合物：（a）将反应混合物与其浓度选择为不使固体硫酸铵沉淀的再循环硫酸铵母液混合 在中和期间，（b）通过将高分子液体形式的含有水或硫酸铵水溶液的气态氨通过多个喷嘴孔送入反应混合物在硫酸铵母液的溶液中，在升高的温度下中和（b） c）将粗内酰胺与硫酸铵水溶液分离，（d）在减压下蒸发硫酸铵溶液，并从硫酸铵母液中分离结晶硫酸铵，和（e）将硫酸铵母液 到a）。

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